Social sciences positioned populism as a strategy to secure power/strength, a genuine political way, but besides it is positioned as an ideology, which divides society into two homogenous, antagonistic groups, brings ...Social sciences positioned populism as a strategy to secure power/strength, a genuine political way, but besides it is positioned as an ideology, which divides society into two homogenous, antagonistic groups, brings society and elites face to face. Furthermore it is defined, as an ideology that wants politics to represent the society's general will. It is accepted that media and its production "logic" provides appropriate tools for populism development. In Turkey, which is governed by neoconservative and neo-liberal power, media populism has been the most used political communication strategy in recent years. Communication strategies, when there is a need to arouse and direct interest of the public opinion and for agenda setting processes; complexity, reduction, personalization, accusation, sentimentalizing, targeting, dramatization, alienation and creation of pseudo events, are frequently used. Most of the political actors appeal to media populism when they need to lean on to the society, disseminate the charismatic leader discourse, reduce the value of the discourses belonging to opponents, prove that they are representing the common goods and benefits. This study relates to direct-indirect practices of government's populism strategies. Within this context, creating legitimacy on political power by media populism in Turkey is assumed to be the most powerful method.展开更多
Thanks to globalization and the emergence of the digital,capitalism progressively arrives to the stage of neoliberal financial hegemony. Therefore,in Europe today,Marxism remains powerful only in the form of leftist p...Thanks to globalization and the emergence of the digital,capitalism progressively arrives to the stage of neoliberal financial hegemony. Therefore,in Europe today,Marxism remains powerful only in the form of leftist populism among the"radical left",as social-democrats and socialists have been largely absorbed by the right. However,because the struggle for hegemony is not only a binary relationship but also a triangular relationship,the only conceivable emancipation strategy is the old Marxist one,which is both dual,popular class against ruling class,and triangular,between three social forces (plus the competent). In this way,the popular class can access itself competence-power by associating with the competent and putting them under its own hegemony.展开更多
A potential global power transition characterized by emerging economies of BRICS where China is the likely leading contender against the United States as the only global hegemon seems inevitable.The increasingly multi...A potential global power transition characterized by emerging economies of BRICS where China is the likely leading contender against the United States as the only global hegemon seems inevitable.The increasingly multipolar world is evidenced by the attention given to right-wing populism in Europe and USA attributed to China’s aggressive approach to international trade through its stealth entry and subsequent investments in global political-economy.China’s presence in Africa and Trump’s America first policy’s attempt to open“new business frontiers”in emerging economies of Asia and Africa in order to contain Chinese influence and threat in global hegemony are interesting happenstances that require closer scrutiny.Kenya,the biggest economy in East Africa,which is among the fastest growing regions globally,is the gateway to the East African Common Market.Historically,Kenya has a policy of non-alignment in international relations making it possible to receive FDI from both China and the US but with highly contested elections.Therefore,Kenya presents a perfect laboratory for examining the emerging power-shift in global political-economy as the country grapples with traditionally chaotic electoral power transitions and the two biggest economies in the world compete for business in Nairobi.The 2017 elections not only betrayed the international community’s commitment to Western values of human rights and democracy,but also revealed the challenges of governance in post-World War II global liberalism characterized by sophisticated media institutional spaces.展开更多
In the presented paper,the author starts with diagnosing the state of research on populism and biopolitics simultaneously.The author states that most often in the literature the topic of populism(Laclau,Mouffe,Mudde,a...In the presented paper,the author starts with diagnosing the state of research on populism and biopolitics simultaneously.The author states that most often in the literature the topic of populism(Laclau,Mouffe,Mudde,and Panizza)is considered separately from the problems related to biopolitics(Foucault,Negri,Agamben,and Esposito).The author would like to change this separation by bringing these two discourses closer together.The author’s main aim is to rethink populism from a biopolitical perspective,i.e.,to implement national politics over the population.Furthermore,the author reconstructs the logic of such biopolitical populism with the example of Poland,and as a consequence,the program of the“Law and Justice Party(PiS)”,which,after coming to power in 2015,introduced a new policy of“legal populism”,closely related to the conservative“procreative policy”(prohibition of abortion),and the family-oriented economy(financial supplement for each family for the second child,the so-called“500 plus”program).展开更多
Our world—online and networked—is immersed under a wave of populism;populism spreads on the wings of internet.Internet as a media platform is essentially different from the traditional media platforms witnessed so f...Our world—online and networked—is immersed under a wave of populism;populism spreads on the wings of internet.Internet as a media platform is essentially different from the traditional media platforms witnessed so far.Internet and digital media inherently follow bottom-up approach whereas traditional media adapt top-down approach to connect with its audience.Similarly,gatekeepers of internet are very different from traditional media.Internet platforms offer an agency to the common man to express his opinions which were never possible before.This shall definitely have political ramifications.India has witnessed religious-Hindu populism under BJP-NDA government since 2014.Recent elections confirm that this trend is likely to continue for next five years.It aims to present a stronger India which gives fitting reply to terrorist outfits and thus is in a better position to safeguard Mother India.It also aims to go back to its ancient roots something which was ruptured under the process of modernization under Nehru.In China the aim of populism is to re-achieve what it had in its glorious past—number one position in Asia—which can be inferred as China Dream.This populism is based on Confucian values and insists on its party-state to take strong measures especially towards US‟s anti-China moves.But,in China any comments which question the legitimacy of the party-state are deemed unpatriotic and removed from the online platforms.Chinese populism is against elite corruption.Populism in China can be referred as CCP guided populism.展开更多
Populism in Western democracies is on the rise.What was once conf ined to outliers and extreme political parties is now tearing away into the whole political system.Inflammatory speeches and critics of so-called'f...Populism in Western democracies is on the rise.What was once conf ined to outliers and extreme political parties is now tearing away into the whole political system.Inflammatory speeches and critics of so-called'fake news'made by展开更多
2017 is an election year for Europe,also a year on which hinges the destiny of Europe.In view of the general rise of right-wing populist parties in the EU,there have been concerns if another'black swan'would f...2017 is an election year for Europe,also a year on which hinges the destiny of Europe.In view of the general rise of right-wing populist parties in the EU,there have been concerns if another'black swan'would fly out of the general elections of the Netherland,France and Germany.To date,the Dutch and French展开更多
Populism combines the following characteristics:a rejection of economic policies linked to globalization;a condemnation of political and economic elites perceived as allied,directly or indirectly,to globalization poli...Populism combines the following characteristics:a rejection of economic policies linked to globalization;a condemnation of political and economic elites perceived as allied,directly or indirectly,to globalization policies;a nationalist conception of the national interest;a mistrust of immigration,seen as a threat to identity;as for populism’s supporters,a rather popular sociological profile,and an electoral profile that tends toward the“hard right”(“droite dure”),without ruling out bridges to the“hard left”(“gauche dure”).Having said this,I propose to defend three theses:populism is not the solution to the problems of the countries where it is developing,whether in France,the United States or elsewhere;it would be dangerous,however,to ignore the crises of which populism is the product;it is essential to take the measure of the problems that favor its emergence and to try to provide answers to them.展开更多
In the last three decades, the rise of a populist challenge to the liberal political mainstream exposed how shallow the supposed victory of global liberalism was, even in its heartlands in Europe and North America. Ex...In the last three decades, the rise of a populist challenge to the liberal political mainstream exposed how shallow the supposed victory of global liberalism was, even in its heartlands in Europe and North America. Exclusive nationalism and nativism, identity politics, critiques of globaiisation and internationalism, and calls for democratic re-empowerment of the demos have converged politically on a new locus of inflated territorial, indeed 'border' sovereignty, aligning the caU of 'taking back control' on behalf of a radically re-defined community ('we') with a defensive re-territorialisation of power along existing fault lines of nation-statism. In this paper, I argue that the very same call has become the new common political denominator for all populist platforms and parties across Europe. I argue that populists across the conventional left-fight divide have deployed a rigidly territo- rialised concept of popular sovereignty in order to bestow intellectual coherence and communicative power to the otherwise disparate strands of their anti-utopian cri- tiques of globalisation. In spite of significant ideological differences between so- called fight- and left-wing populism, in the short-term the two populist projects have sought to stage their performances of sovereigntism on, behind or inside the borders of the existing nation-states.展开更多
The three Baltic states of Estonia, Latvia and Lithuania make for interesting comparative case studies in the rise of contemporary populism in Europe. All three countries share a similar modem history, democratic poli...The three Baltic states of Estonia, Latvia and Lithuania make for interesting comparative case studies in the rise of contemporary populism in Europe. All three countries share a similar modem history, democratic political system, level of economic development and are in the same western-oriented regional clubs (NATO, European Union, OSCE, European Council and, in the case of Estonia and Latvia, OECD, etc.). However, they do differ in the extent to which populism has played a role in their national politics. Populism has played a marginal role in Estonian politics, but has long been central to the Latvian party system and influential in Lithuanian politics. This article tackles two key issues in the study of populism. First, it focuses on political party institutionalisation as the key variable in explaining the differing impact of populist political parties across the Baltic states. It examines and explains the higher turnover of political party creation and destruction in Latvia and, to a lesser extent, Lithuania and argues that institutions--and par- ticularly the laws that frame party organisations and participation in elections-- create political opportunities for populist parties. The second part of the paper considers the different types of populist parties to have emerged in the Baltic states in recent decades. While previous studies of populism in the Baltic states (such as Auers and Kasekamp in J Contemp Eur Stud 17(2):241-254, 2009; Auers and Kasekamp, in: Wodak et al (eds) Right wing populism across/beyond Europe, Bloomsbury Academic Press, London 2013) have explicitly focused on Radical Right Populist parties, this article additionally identifies a number of parties in the region that are not explicitly radical right, but are certainly populist.展开更多
Alzheimer's disease(AD)and Alzheimer's diseaserelated dementias(ADRD)represent a significant public health challenge,with projections indicating a substantial increase in affected individuals due to the aging ...Alzheimer's disease(AD)and Alzheimer's diseaserelated dementias(ADRD)represent a significant public health challenge,with projections indicating a substantial increase in affected individuals due to the aging global population.From the World Health Organization,AD/ADRD has affected more than 55 million individuals worldwide,with an additional 10 million cases diagnosed each year.展开更多
BACKGROUND Colorectal cancer(CRC)is a serious threat worldwide.Although early screening is suggested to be the most effective method to prevent and control CRC,the current situation of early screening for CRC is still...BACKGROUND Colorectal cancer(CRC)is a serious threat worldwide.Although early screening is suggested to be the most effective method to prevent and control CRC,the current situation of early screening for CRC is still not optimistic.In China,the incidence of CRC in the Yangtze River Delta region is increasing dramatically,but few studies have been conducted.Therefore,it is necessary to develop a simple and efficient early screening model for CRC.AIM To develop and validate an early-screening nomogram model to identify individuals at high risk of CRC.METHODS Data of 64448 participants obtained from Ningbo Hospital,China between 2014 and 2017 were retrospectively analyzed.The cohort comprised 64448 individuals,of which,530 were excluded due to missing or incorrect data.Of 63918,7607(11.9%)individuals were considered to be high risk for CRC,and 56311(88.1%)were not.The participants were randomly allocated to a training set(44743)or validation set(19175).The discriminatory ability,predictive accuracy,and clinical utility of the model were evaluated by constructing and analyzing receiver operating characteristic(ROC)curves and calibration curves and by decision curve analysis.Finally,the model was validated internally using a bootstrap resampling technique.RESULTS Seven variables,including demographic,lifestyle,and family history information,were examined.Multifactorial logistic regression analysis revealed that age[odds ratio(OR):1.03,95%confidence interval(CI):1.02-1.03,P<0.001],body mass index(BMI)(OR:1.07,95%CI:1.06-1.08,P<0.001),waist circumference(WC)(OR:1.03,95%CI:1.02-1.03 P<0.001),lifestyle(OR:0.45,95%CI:0.42-0.48,P<0.001),and family history(OR:4.28,95%CI:4.04-4.54,P<0.001)were the most significant predictors of high-risk CRC.Healthy lifestyle was a protective factor,whereas family history was the most significant risk factor.The area under the curve was 0.734(95%CI:0.723-0.745)for the final validation set ROC curve and 0.735(95%CI:0.728-0.742)for the training set ROC curve.The calibration curve demonstrated a high correlation between the CRC high-risk population predicted by the nomogram model and the actual CRC high-risk population.CONCLUSION The early-screening nomogram model for CRC prediction in high-risk populations developed in this study based on age,BMI,WC,lifestyle,and family history exhibited high accuracy.展开更多
When benefiting other beneficiaries,cushion plants may reciprocally receive feedback effects.The feedback effects on different sex morphs,however,remains unclear.In this study,taking the gynodioecious Arenaria polytri...When benefiting other beneficiaries,cushion plants may reciprocally receive feedback effects.The feedback effects on different sex morphs,however,remains unclear.In this study,taking the gynodioecious Arenaria polytrichiodes as a model species,we aimed to assess the sex-specific facilitation intensity of cushion plant by measuring the beneficiary cover ratio,and to assess the potential costs in cushion reproductive functions by measuring the flower and fruit cover ratios.The total beneficiary cover ratio was similar between females and hermaphrodites.Females produced much less flowers but more fruits than hermaphrodites.These results suggested that females and hermaphrodites possess similar facilitation intensity,and female cushion A.polytrichoides may allocate more resources saved from pollen production to seed production,while hermaphrodites possibly allocate more resources to pollen production hence reducing seed production.The surface areas covered by beneficiaries produced less flowers and fruits than areas without beneficiaries.In addition,strong negative correlations between beneficiary cover and flower cover were detected for both females and hermaphrodites,but the correlation strength were similar for these two sex morphs.However,the correlation between beneficiary cover and fruit cover was only significantly negative for females,suggesting that beneficiary plants negatively affect fruit reproduction of females while have neutral effects on hermaphrodites.All the results suggest that to facilitate other beneficiaries can induce reproductive costs on cushion A.polytrichoides,with females possibly suffering greater cost than hermaphrodites.Such differentiation in reproductive costs between sex morphs,in long-term perspective,may imply sex imbalance in population dynamics.展开更多
BACKGROUND The association of single nucleotide polymorphism of KCNQ1 gene rs2237895 with type 2 diabetes mellitus(T2DM)is currently controversial.It is unknown whether this association can be gene realized across dif...BACKGROUND The association of single nucleotide polymorphism of KCNQ1 gene rs2237895 with type 2 diabetes mellitus(T2DM)is currently controversial.It is unknown whether this association can be gene realized across different populations.AIM To determine the association of KCNQ1 rs2237895 with T2DM and provide reliable evidence for genetic susceptibility to T2DM.METHODS We searched PubMed,Embase,Web of Science,Cochrane Library,Medline,Baidu Academic,China National Knowledge Infrastructure,China Biomedical Literature Database,and Wanfang to investigate the association between KCNQ1 gene rs2237895 and the risk of T2DM up to January 12,2022.Review Manager 5.4 was used to analyze the association of the KCNQ1 gene rs2237895 polymorphism with T2DM and to evaluate the publication bias of the selected literature.RESULTS Twelve case–control studies(including 11273 cases and 11654 controls)met our inclusion criteria.In the full population,allelic model[odds ratio(OR):1.19;95%confidence interval(95%CI):1.09–1.29;P<0.0001],recessive model(OR:1.20;95%CI:1.11–1.29;P<0.0001),dominant model(OR:1.27.95%CI:1.14–1.42;P<0.0001),and codominant model(OR:1.36;95%CI:1.15–1.60;P=0.0003)(OR:1.22;95%CI:1.10–1.36;P=0.0002)indicated that the KCNQ1 gene rs2237895 polymorphism was significantly correlated with susceptibility to T2DM.In stratified analysis,this association was confirmed in Asian populations:allelic model(OR:1.25;95%CI:1.13–1.37;P<0.0001),recessive model(OR:1.29;95%CI:1.11–1.49;P=0.0007),dominant model(OR:1.35;95%CI:1.20–1.52;P<0.0001),codominant model(OR:1.49;95%CI:1.22–1.81;P<0.0001)(OR:1.26;95%CI:1.16–1.36;P<0.0001).In non-Asian populations,this association was not significant:Allelic model(OR:1.06,95%CI:0.98–1.14;P=0.12),recessive model(OR:1.04;95%CI:0.75–1.42;P=0.83),dominant model(OR:1.06;95%CI:0.98–1.15;P=0.15),codominant model(OR:1.08;95%CI:0.82–1.42;P=0.60.OR:1.15;95%CI:0.95–1.39;P=0.14).CONCLUSION KCNQ1 gene rs2237895 was significantly associated with susceptibility to T2DM in an Asian population.Carriers of the C allele had a higher risk of T2DM.This association was not significant in non-Asian populations.展开更多
Genomic selection(GS)has been widely used in livestock,which greatly accelerated the genetic progress of complex traits.The population size was one of the significant factors affecting the prediction accuracy,while it...Genomic selection(GS)has been widely used in livestock,which greatly accelerated the genetic progress of complex traits.The population size was one of the significant factors affecting the prediction accuracy,while it was limited by the purebred population.Compared to directly combining two uncorrelated purebred populations to extend the reference population size,it might be more meaningful to incorporate the correlated crossbreds into reference population for genomic prediction.In this study,we simulated purebred offspring(PAS and PBS)and crossbred offspring(CAB)base on real genotype data of two base purebred populations(PA and PB),to evaluate the performance of genomic selection on purebred while incorporating crossbred information.The results showed that selecting key crossbred individuals via maximizing the expected genetic relationship(REL)was better than the other methods(individuals closet or farthest to the purebred population,CP/FP)in term of the prediction accuracy.Furthermore,the prediction accuracy of reference populations combining PA and CAB was significantly better only based on PA,which was similar to combine PA and PAS.Moreover,the rank correlation between the multiple of the increased relationship(MIR)and reliability improvement was 0.60-0.70.But for individuals with low correlation(Cor(Pi,PA or B),the reliability improvement was significantly lower than other individuals.Our findings suggested that incorporating crossbred into purebred population could improve the performance of genetic prediction compared with using the purebred population only.The genetic relationship between purebred and crossbred population is a key factor determining the increased reliability while incorporating crossbred population in the genomic prediction on pure bred individuals.展开更多
Despite all efforts,long-term changes in the adult sex ratios of breeding duck populations are still unclear;this uncertainty is especially true for male-bias populations,which are often under the scrutiny of research...Despite all efforts,long-term changes in the adult sex ratios of breeding duck populations are still unclear;this uncertainty is especially true for male-bias populations,which are often under the scrutiny of researchers lacking convenient results for the active protection of endangered species.Species with male-bias populations are usually strongly affected by a decline in population size that leads to a higher extinction risk.In this study,we examined our long-term data of the abundance of breeding populations in six duck species(Mallard Anas platyrhynchos,Gadwall Mareca strepera,Red-crested Pochard Netta rufina,Common Pochard Aythya ferina,Tufted Duck Aythya fuligula,and Common Goldeneye Bucephala clangula)from fishponds in South Bohemia,Czechia,between 2004 and 2022.This evidence was used to assess long-term changes in the adult sex ratio in these breeding populations and investigate the possible effects of the NAO index(North Atlantic Oscillation index)on them,indicating climate conditions in winter.We determined a long-term decrease of the proportion of females in the breeding season in two of the six examined species:Common Pochard and Red-crested Pochard,which is driven by the long-term increase in the number of males in contrast to the decreasing or stable number of females likely caused by different migration behaviours between females and males.In the case of Common Pochard,in breeding populations,we estimated 60-65%of males in the early 2000s rising to 75-80%in the early 2020s.However,we establish no significant effects linked to climate conditions of the previous winter in these species as a crucial cause of the changes of the proportion of females in the breeding population.展开更多
It is of importance to enhance the urban areas'capacity for population aggregation in underdeveloped regions,aiming to rectify the imbalanced and insufficient pattern of economic development in China.Taking the Ta...It is of importance to enhance the urban areas'capacity for population aggregation in underdeveloped regions,aiming to rectify the imbalanced and insufficient pattern of economic development in China.Taking the Taiyuan Metropolitan Area(TMA)in central China as a case study,this paper examines the evolutionary process and characteristics of population agglomeration from 2000 to 2020,and identifies factors associated with agglomeration and their spatial effects.The findings indicated that:1)against the background of sustained population shrinkage in the provincial area,the TMA showed a demographic trend of steady increase,albeit with a decelerated growth rate.In the metropolitan area,urban population size continued to grow rapidly,whereas the rural areas endured sustained losses.Disparities in city size continued to widen,and the polarization of concentrated population in the core cities kept increasing.2)Agglomerations in both secondary and service industries had significant positive effects on local population agglomeration,with the former effect being stronger.Regional economic development,government fiscal expenditure,and financial advancement all contributed to facilitating local population clustering.From a spatial spillover perspective,service agglomeration and financial development promoted population agglomeration in surrounding areas.Conversely,fiscal expenditure inhibited such agglomeration.As for industrial agglomeration and regional economic development,their spatial spillover effects were non-significant.The results obtained reveal several policy implications aimed at enhancing the population agglomeration capacity of the metropolitan area in underdeveloped regions during the new era.展开更多
With economic development and urbanization in China,the rural settlements have experienced great change.To explore the evolution process of rural settlements in terms of land,population and industry can reveal the dev...With economic development and urbanization in China,the rural settlements have experienced great change.To explore the evolution process of rural settlements in terms of land,population and industry can reveal the development law of rural spatial distribution,population structure and industrial economy in different stages and regions.Studying the development status and evolution characteristics of villages in the upper Tuojiang River basin in Southwest China in the past 20 years are of significant value.The upper Tuojiang River basin includes the main types of terrain found in the Southwest region:mountainous,plains,and hills,exhibiting a certain typicality of geographical characteristics.This study took towns and townships at the town-level scale as the basic unit of research,and constructed an evaluation system for village evolution based on'land,population,and industry'.It employed Criteria Importance Through Inter-Criteria Correlation(CRITIC)analysis to examine the characteristics of village evolution in the area from 2000 to 2020,and used geographic detector analysis to identify the leading factors affecting village evolution.The results show that:(1)From 2000 to 2010,villages in the upper Tuojiang River basin experienced significant changes,and the pace of these transformations slowed from 2010 to 2020.(2)From a comprehensive perspective,from 2000 to 2020,villages in hilly areas show a decline,while villages in plain areas near the city center show a positive urbanization development.(3)Road accessibility and distance from the city center are the main factors that explain the spatial differentiation of village evolution degree in the study area.This study elucidates the spatiotemporal evolution characteristics of villages in the upper Tuojiang River basin and identifies the primary factors contributing to their changes,which will provide a reference for investigating the development of rural areas in different terrains of Southwest China.展开更多
Lodging is still the key factor that limits continuous increases in wheat yields today,because the mechanical strength of culms is reduced due to low-light stress in populations under high-yield cultivation.The mechan...Lodging is still the key factor that limits continuous increases in wheat yields today,because the mechanical strength of culms is reduced due to low-light stress in populations under high-yield cultivation.The mechanical properties of the culm are mainly determined by lignin,which is affected by the light environment.However,little is known about whether the light environment can be sufficiently improved by changing the population distribution to inhibit culm lodging.Therefore,in this study,we used the wheat cultivar“Xinong 979”to establish a low-density homogeneous distribution treatment(LD),high-density homogeneous distribution treatment(HD),and high-density heterogeneous distribution treatment(HD-h)to study the regulatory effects and mechanism responsible for differences in the lodging resistance of wheat culms under different population distributions.Compared with LD,HD significantly reduced the light transmittance in the middle and basal layers of the canopy,the net photosynthetic rate in the middle and lower leaves of plants,the accumulation of lignin in the culm,and the breaking resistance of the culm,and thus the lodging index values increased significantly,with lodging rates of 67.5%in 2020–2021 and 59.3%in 2021–2022.Under HD-h,the light transmittance and other indicators in the middle and basal canopy layers were significantly higher than those under HD,and the lodging index decreased to the point that no lodging occurred.Compared with LD,the activities of phenylalanine ammonia-Lyase(PAL),4-coumarate:coenzyme A ligase(4CL),catechol-O-methyltransferase(COMT),and cinnamyl-alcohol dehydrogenase(CAD)in the lignin synthesis pathway were significantly reduced in the culms under HD during the critical period for culm formation,and the relative expression levels of TaPAL,Ta4CL,TaCOMT,and TaCAD were significantly downregulated.However,the activities of lignin synthesis-related enzymes and their gene expression levels were significantly increased under HD-h compared with HD.A partial least squares path modeling analysis found significant positive effects between the canopy light environment,the photosynthetic capacity of the middle and lower leaves of plants,lignin synthesis and accumulation,and lodging resistance in the culms.Thus,under conventional high-density planting,the risk of wheat lodging was significantly higher.Accordingly,the canopy light environment can be optimized by changing the heterogeneity of the population distribution to improve the photosynthetic capacity of the middle and lower leaves of plants,promote lignin accumulation in the culm,and enhance lodging resistance in wheat.These findings provide a basis for understanding the mechanism responsible for the lower mechanical strength of the culm under high-yield wheat cultivation,and a theoretical basis and for developing technical measures to enhance lodging resistance.展开更多
Temperature extremes over rapidly urbanizing regions with high population densities have been scrutinized due to their severe impacts on human safety and economics.First of all,the performance of the regional climate ...Temperature extremes over rapidly urbanizing regions with high population densities have been scrutinized due to their severe impacts on human safety and economics.First of all,the performance of the regional climate model RegCM4 with a hydrostatic or non-hydrostatic dynamic core in simulating seasonal temperature and temperature extremes was evaluated over the historical period of 1991–99 at a 12-km spatial resolution over China and a 3-km resolution over the Beijing−Tianjin−Hebei(JJJ)region,a typical urban agglomeration of China.Simulations of spatial distributions of temperature extremes over the JJJ region using RegCM4 with hydrostatic and non-hydrostatic cores showed high spatial correlations of more than 0.8 with the observations.Under a warming climate,temperature extremes of annual maximum daily temperature(TXx)and summer days(SU)in China and the JJJ region showed obvious increases by the end of the 21st century while there was a general reduction in frost days(FD).The ensemble of RegCM4 with different land surface components was used to examine population exposure to temperature extremes over the JJJ region.Population exposure to temperature extremes was found to decrease in 2091−99 relative to 1991−99 over the majority of the JJJ region due to the joint impacts of increases in temperature extremes over the JJJ and population decreases over the JJJ region,except for downtown areas.Furthermore,changes in population exposure to temperature extremes were mainly dominated by future population changes.Finally,we quantified changes in exposure to temperature extremes with temperature increase over the JJJ region.This study helps to provide relevant policies to respond future climate risks over the JJJ region.展开更多
文摘Social sciences positioned populism as a strategy to secure power/strength, a genuine political way, but besides it is positioned as an ideology, which divides society into two homogenous, antagonistic groups, brings society and elites face to face. Furthermore it is defined, as an ideology that wants politics to represent the society's general will. It is accepted that media and its production "logic" provides appropriate tools for populism development. In Turkey, which is governed by neoconservative and neo-liberal power, media populism has been the most used political communication strategy in recent years. Communication strategies, when there is a need to arouse and direct interest of the public opinion and for agenda setting processes; complexity, reduction, personalization, accusation, sentimentalizing, targeting, dramatization, alienation and creation of pseudo events, are frequently used. Most of the political actors appeal to media populism when they need to lean on to the society, disseminate the charismatic leader discourse, reduce the value of the discourses belonging to opponents, prove that they are representing the common goods and benefits. This study relates to direct-indirect practices of government's populism strategies. Within this context, creating legitimacy on political power by media populism in Turkey is assumed to be the most powerful method.
文摘Thanks to globalization and the emergence of the digital,capitalism progressively arrives to the stage of neoliberal financial hegemony. Therefore,in Europe today,Marxism remains powerful only in the form of leftist populism among the"radical left",as social-democrats and socialists have been largely absorbed by the right. However,because the struggle for hegemony is not only a binary relationship but also a triangular relationship,the only conceivable emancipation strategy is the old Marxist one,which is both dual,popular class against ruling class,and triangular,between three social forces (plus the competent). In this way,the popular class can access itself competence-power by associating with the competent and putting them under its own hegemony.
文摘A potential global power transition characterized by emerging economies of BRICS where China is the likely leading contender against the United States as the only global hegemon seems inevitable.The increasingly multipolar world is evidenced by the attention given to right-wing populism in Europe and USA attributed to China’s aggressive approach to international trade through its stealth entry and subsequent investments in global political-economy.China’s presence in Africa and Trump’s America first policy’s attempt to open“new business frontiers”in emerging economies of Asia and Africa in order to contain Chinese influence and threat in global hegemony are interesting happenstances that require closer scrutiny.Kenya,the biggest economy in East Africa,which is among the fastest growing regions globally,is the gateway to the East African Common Market.Historically,Kenya has a policy of non-alignment in international relations making it possible to receive FDI from both China and the US but with highly contested elections.Therefore,Kenya presents a perfect laboratory for examining the emerging power-shift in global political-economy as the country grapples with traditionally chaotic electoral power transitions and the two biggest economies in the world compete for business in Nairobi.The 2017 elections not only betrayed the international community’s commitment to Western values of human rights and democracy,but also revealed the challenges of governance in post-World War II global liberalism characterized by sophisticated media institutional spaces.
文摘In the presented paper,the author starts with diagnosing the state of research on populism and biopolitics simultaneously.The author states that most often in the literature the topic of populism(Laclau,Mouffe,Mudde,and Panizza)is considered separately from the problems related to biopolitics(Foucault,Negri,Agamben,and Esposito).The author would like to change this separation by bringing these two discourses closer together.The author’s main aim is to rethink populism from a biopolitical perspective,i.e.,to implement national politics over the population.Furthermore,the author reconstructs the logic of such biopolitical populism with the example of Poland,and as a consequence,the program of the“Law and Justice Party(PiS)”,which,after coming to power in 2015,introduced a new policy of“legal populism”,closely related to the conservative“procreative policy”(prohibition of abortion),and the family-oriented economy(financial supplement for each family for the second child,the so-called“500 plus”program).
文摘Our world—online and networked—is immersed under a wave of populism;populism spreads on the wings of internet.Internet as a media platform is essentially different from the traditional media platforms witnessed so far.Internet and digital media inherently follow bottom-up approach whereas traditional media adapt top-down approach to connect with its audience.Similarly,gatekeepers of internet are very different from traditional media.Internet platforms offer an agency to the common man to express his opinions which were never possible before.This shall definitely have political ramifications.India has witnessed religious-Hindu populism under BJP-NDA government since 2014.Recent elections confirm that this trend is likely to continue for next five years.It aims to present a stronger India which gives fitting reply to terrorist outfits and thus is in a better position to safeguard Mother India.It also aims to go back to its ancient roots something which was ruptured under the process of modernization under Nehru.In China the aim of populism is to re-achieve what it had in its glorious past—number one position in Asia—which can be inferred as China Dream.This populism is based on Confucian values and insists on its party-state to take strong measures especially towards US‟s anti-China moves.But,in China any comments which question the legitimacy of the party-state are deemed unpatriotic and removed from the online platforms.Chinese populism is against elite corruption.Populism in China can be referred as CCP guided populism.
文摘Populism in Western democracies is on the rise.What was once conf ined to outliers and extreme political parties is now tearing away into the whole political system.Inflammatory speeches and critics of so-called'fake news'made by
文摘2017 is an election year for Europe,also a year on which hinges the destiny of Europe.In view of the general rise of right-wing populist parties in the EU,there have been concerns if another'black swan'would fly out of the general elections of the Netherland,France and Germany.To date,the Dutch and French
文摘Populism combines the following characteristics:a rejection of economic policies linked to globalization;a condemnation of political and economic elites perceived as allied,directly or indirectly,to globalization policies;a nationalist conception of the national interest;a mistrust of immigration,seen as a threat to identity;as for populism’s supporters,a rather popular sociological profile,and an electoral profile that tends toward the“hard right”(“droite dure”),without ruling out bridges to the“hard left”(“gauche dure”).Having said this,I propose to defend three theses:populism is not the solution to the problems of the countries where it is developing,whether in France,the United States or elsewhere;it would be dangerous,however,to ignore the crises of which populism is the product;it is essential to take the measure of the problems that favor its emergence and to try to provide answers to them.
文摘In the last three decades, the rise of a populist challenge to the liberal political mainstream exposed how shallow the supposed victory of global liberalism was, even in its heartlands in Europe and North America. Exclusive nationalism and nativism, identity politics, critiques of globaiisation and internationalism, and calls for democratic re-empowerment of the demos have converged politically on a new locus of inflated territorial, indeed 'border' sovereignty, aligning the caU of 'taking back control' on behalf of a radically re-defined community ('we') with a defensive re-territorialisation of power along existing fault lines of nation-statism. In this paper, I argue that the very same call has become the new common political denominator for all populist platforms and parties across Europe. I argue that populists across the conventional left-fight divide have deployed a rigidly territo- rialised concept of popular sovereignty in order to bestow intellectual coherence and communicative power to the otherwise disparate strands of their anti-utopian cri- tiques of globalisation. In spite of significant ideological differences between so- called fight- and left-wing populism, in the short-term the two populist projects have sought to stage their performances of sovereigntism on, behind or inside the borders of the existing nation-states.
文摘The three Baltic states of Estonia, Latvia and Lithuania make for interesting comparative case studies in the rise of contemporary populism in Europe. All three countries share a similar modem history, democratic political system, level of economic development and are in the same western-oriented regional clubs (NATO, European Union, OSCE, European Council and, in the case of Estonia and Latvia, OECD, etc.). However, they do differ in the extent to which populism has played a role in their national politics. Populism has played a marginal role in Estonian politics, but has long been central to the Latvian party system and influential in Lithuanian politics. This article tackles two key issues in the study of populism. First, it focuses on political party institutionalisation as the key variable in explaining the differing impact of populist political parties across the Baltic states. It examines and explains the higher turnover of political party creation and destruction in Latvia and, to a lesser extent, Lithuania and argues that institutions--and par- ticularly the laws that frame party organisations and participation in elections-- create political opportunities for populist parties. The second part of the paper considers the different types of populist parties to have emerged in the Baltic states in recent decades. While previous studies of populism in the Baltic states (such as Auers and Kasekamp in J Contemp Eur Stud 17(2):241-254, 2009; Auers and Kasekamp, in: Wodak et al (eds) Right wing populism across/beyond Europe, Bloomsbury Academic Press, London 2013) have explicitly focused on Radical Right Populist parties, this article additionally identifies a number of parties in the region that are not explicitly radical right, but are certainly populist.
文摘Alzheimer's disease(AD)and Alzheimer's diseaserelated dementias(ADRD)represent a significant public health challenge,with projections indicating a substantial increase in affected individuals due to the aging global population.From the World Health Organization,AD/ADRD has affected more than 55 million individuals worldwide,with an additional 10 million cases diagnosed each year.
基金Supported by the Project of NINGBO Leading Medical Health Discipline,No.2022-B11Ningbo Natural Science Foundation,No.202003N4206Public Welfare Foundation of Ningbo,No.2021S108.
文摘BACKGROUND Colorectal cancer(CRC)is a serious threat worldwide.Although early screening is suggested to be the most effective method to prevent and control CRC,the current situation of early screening for CRC is still not optimistic.In China,the incidence of CRC in the Yangtze River Delta region is increasing dramatically,but few studies have been conducted.Therefore,it is necessary to develop a simple and efficient early screening model for CRC.AIM To develop and validate an early-screening nomogram model to identify individuals at high risk of CRC.METHODS Data of 64448 participants obtained from Ningbo Hospital,China between 2014 and 2017 were retrospectively analyzed.The cohort comprised 64448 individuals,of which,530 were excluded due to missing or incorrect data.Of 63918,7607(11.9%)individuals were considered to be high risk for CRC,and 56311(88.1%)were not.The participants were randomly allocated to a training set(44743)or validation set(19175).The discriminatory ability,predictive accuracy,and clinical utility of the model were evaluated by constructing and analyzing receiver operating characteristic(ROC)curves and calibration curves and by decision curve analysis.Finally,the model was validated internally using a bootstrap resampling technique.RESULTS Seven variables,including demographic,lifestyle,and family history information,were examined.Multifactorial logistic regression analysis revealed that age[odds ratio(OR):1.03,95%confidence interval(CI):1.02-1.03,P<0.001],body mass index(BMI)(OR:1.07,95%CI:1.06-1.08,P<0.001),waist circumference(WC)(OR:1.03,95%CI:1.02-1.03 P<0.001),lifestyle(OR:0.45,95%CI:0.42-0.48,P<0.001),and family history(OR:4.28,95%CI:4.04-4.54,P<0.001)were the most significant predictors of high-risk CRC.Healthy lifestyle was a protective factor,whereas family history was the most significant risk factor.The area under the curve was 0.734(95%CI:0.723-0.745)for the final validation set ROC curve and 0.735(95%CI:0.728-0.742)for the training set ROC curve.The calibration curve demonstrated a high correlation between the CRC high-risk population predicted by the nomogram model and the actual CRC high-risk population.CONCLUSION The early-screening nomogram model for CRC prediction in high-risk populations developed in this study based on age,BMI,WC,lifestyle,and family history exhibited high accuracy.
基金supported by the Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK0502 to H.S.)the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA20050203 to H.S.)+3 种基金the Yunnan Applied Basic Research Project(202001AT070060 to J.G.C.)the National Natural Science Foundation of China(31271552 to J.G.C.)the CAS“Light of West China”Program(J.G.C.)the Young Academic and Technical Leader Raising Foundation of Yunnan Province(202205AC160053 to J.G.C.)。
文摘When benefiting other beneficiaries,cushion plants may reciprocally receive feedback effects.The feedback effects on different sex morphs,however,remains unclear.In this study,taking the gynodioecious Arenaria polytrichiodes as a model species,we aimed to assess the sex-specific facilitation intensity of cushion plant by measuring the beneficiary cover ratio,and to assess the potential costs in cushion reproductive functions by measuring the flower and fruit cover ratios.The total beneficiary cover ratio was similar between females and hermaphrodites.Females produced much less flowers but more fruits than hermaphrodites.These results suggested that females and hermaphrodites possess similar facilitation intensity,and female cushion A.polytrichoides may allocate more resources saved from pollen production to seed production,while hermaphrodites possibly allocate more resources to pollen production hence reducing seed production.The surface areas covered by beneficiaries produced less flowers and fruits than areas without beneficiaries.In addition,strong negative correlations between beneficiary cover and flower cover were detected for both females and hermaphrodites,but the correlation strength were similar for these two sex morphs.However,the correlation between beneficiary cover and fruit cover was only significantly negative for females,suggesting that beneficiary plants negatively affect fruit reproduction of females while have neutral effects on hermaphrodites.All the results suggest that to facilitate other beneficiaries can induce reproductive costs on cushion A.polytrichoides,with females possibly suffering greater cost than hermaphrodites.Such differentiation in reproductive costs between sex morphs,in long-term perspective,may imply sex imbalance in population dynamics.
基金Supported by the Natural Science Foundation for the Higher Education Institutions of Anhui Province of China,No.2023AH050561,No.2022AH051143,No.KJ2021A0266,and No.KJ2021A1228School-level offline courses,No.2021xjkc13.
文摘BACKGROUND The association of single nucleotide polymorphism of KCNQ1 gene rs2237895 with type 2 diabetes mellitus(T2DM)is currently controversial.It is unknown whether this association can be gene realized across different populations.AIM To determine the association of KCNQ1 rs2237895 with T2DM and provide reliable evidence for genetic susceptibility to T2DM.METHODS We searched PubMed,Embase,Web of Science,Cochrane Library,Medline,Baidu Academic,China National Knowledge Infrastructure,China Biomedical Literature Database,and Wanfang to investigate the association between KCNQ1 gene rs2237895 and the risk of T2DM up to January 12,2022.Review Manager 5.4 was used to analyze the association of the KCNQ1 gene rs2237895 polymorphism with T2DM and to evaluate the publication bias of the selected literature.RESULTS Twelve case–control studies(including 11273 cases and 11654 controls)met our inclusion criteria.In the full population,allelic model[odds ratio(OR):1.19;95%confidence interval(95%CI):1.09–1.29;P<0.0001],recessive model(OR:1.20;95%CI:1.11–1.29;P<0.0001),dominant model(OR:1.27.95%CI:1.14–1.42;P<0.0001),and codominant model(OR:1.36;95%CI:1.15–1.60;P=0.0003)(OR:1.22;95%CI:1.10–1.36;P=0.0002)indicated that the KCNQ1 gene rs2237895 polymorphism was significantly correlated with susceptibility to T2DM.In stratified analysis,this association was confirmed in Asian populations:allelic model(OR:1.25;95%CI:1.13–1.37;P<0.0001),recessive model(OR:1.29;95%CI:1.11–1.49;P=0.0007),dominant model(OR:1.35;95%CI:1.20–1.52;P<0.0001),codominant model(OR:1.49;95%CI:1.22–1.81;P<0.0001)(OR:1.26;95%CI:1.16–1.36;P<0.0001).In non-Asian populations,this association was not significant:Allelic model(OR:1.06,95%CI:0.98–1.14;P=0.12),recessive model(OR:1.04;95%CI:0.75–1.42;P=0.83),dominant model(OR:1.06;95%CI:0.98–1.15;P=0.15),codominant model(OR:1.08;95%CI:0.82–1.42;P=0.60.OR:1.15;95%CI:0.95–1.39;P=0.14).CONCLUSION KCNQ1 gene rs2237895 was significantly associated with susceptibility to T2DM in an Asian population.Carriers of the C allele had a higher risk of T2DM.This association was not significant in non-Asian populations.
基金supported by the earmarked fund for China Agriculture Research System(CARS-35)the National Natural Science Foundation of China(32022078)supported by the National Supercomputer Centre in Guangzhou。
文摘Genomic selection(GS)has been widely used in livestock,which greatly accelerated the genetic progress of complex traits.The population size was one of the significant factors affecting the prediction accuracy,while it was limited by the purebred population.Compared to directly combining two uncorrelated purebred populations to extend the reference population size,it might be more meaningful to incorporate the correlated crossbreds into reference population for genomic prediction.In this study,we simulated purebred offspring(PAS and PBS)and crossbred offspring(CAB)base on real genotype data of two base purebred populations(PA and PB),to evaluate the performance of genomic selection on purebred while incorporating crossbred information.The results showed that selecting key crossbred individuals via maximizing the expected genetic relationship(REL)was better than the other methods(individuals closet or farthest to the purebred population,CP/FP)in term of the prediction accuracy.Furthermore,the prediction accuracy of reference populations combining PA and CAB was significantly better only based on PA,which was similar to combine PA and PAS.Moreover,the rank correlation between the multiple of the increased relationship(MIR)and reliability improvement was 0.60-0.70.But for individuals with low correlation(Cor(Pi,PA or B),the reliability improvement was significantly lower than other individuals.Our findings suggested that incorporating crossbred into purebred population could improve the performance of genetic prediction compared with using the purebred population only.The genetic relationship between purebred and crossbred population is a key factor determining the increased reliability while incorporating crossbred population in the genomic prediction on pure bred individuals.
基金supported by the project 2021B0038 of the Internal Grant Agency of Faculty of Environmental Sciences,CZU Prague entitled“Effect of incubation behaviour on predation risk in ducks(Common Pochard Aythya ferina and Tufted Duck Aythya fuligula)in two different habitats”the project SS01010280 of the Technology Agency of the Czech Republic entitled“Fishpond management optimization as a tool to biodiversity conservation under climate change”.
文摘Despite all efforts,long-term changes in the adult sex ratios of breeding duck populations are still unclear;this uncertainty is especially true for male-bias populations,which are often under the scrutiny of researchers lacking convenient results for the active protection of endangered species.Species with male-bias populations are usually strongly affected by a decline in population size that leads to a higher extinction risk.In this study,we examined our long-term data of the abundance of breeding populations in six duck species(Mallard Anas platyrhynchos,Gadwall Mareca strepera,Red-crested Pochard Netta rufina,Common Pochard Aythya ferina,Tufted Duck Aythya fuligula,and Common Goldeneye Bucephala clangula)from fishponds in South Bohemia,Czechia,between 2004 and 2022.This evidence was used to assess long-term changes in the adult sex ratio in these breeding populations and investigate the possible effects of the NAO index(North Atlantic Oscillation index)on them,indicating climate conditions in winter.We determined a long-term decrease of the proportion of females in the breeding season in two of the six examined species:Common Pochard and Red-crested Pochard,which is driven by the long-term increase in the number of males in contrast to the decreasing or stable number of females likely caused by different migration behaviours between females and males.In the case of Common Pochard,in breeding populations,we estimated 60-65%of males in the early 2000s rising to 75-80%in the early 2020s.However,we establish no significant effects linked to climate conditions of the previous winter in these species as a crucial cause of the changes of the proportion of females in the breeding population.
基金Under the auspices of the Humanities and Social Sciences Fund of the Ministry of Education of China (No.20YJC790107)Planning Project for Philosophy and Social Sciences of Shanxi Province (No.2021YJ040)Special Foundation for Science and Development of Shanxi Province (No.202204031401052)。
文摘It is of importance to enhance the urban areas'capacity for population aggregation in underdeveloped regions,aiming to rectify the imbalanced and insufficient pattern of economic development in China.Taking the Taiyuan Metropolitan Area(TMA)in central China as a case study,this paper examines the evolutionary process and characteristics of population agglomeration from 2000 to 2020,and identifies factors associated with agglomeration and their spatial effects.The findings indicated that:1)against the background of sustained population shrinkage in the provincial area,the TMA showed a demographic trend of steady increase,albeit with a decelerated growth rate.In the metropolitan area,urban population size continued to grow rapidly,whereas the rural areas endured sustained losses.Disparities in city size continued to widen,and the polarization of concentrated population in the core cities kept increasing.2)Agglomerations in both secondary and service industries had significant positive effects on local population agglomeration,with the former effect being stronger.Regional economic development,government fiscal expenditure,and financial advancement all contributed to facilitating local population clustering.From a spatial spillover perspective,service agglomeration and financial development promoted population agglomeration in surrounding areas.Conversely,fiscal expenditure inhibited such agglomeration.As for industrial agglomeration and regional economic development,their spatial spillover effects were non-significant.The results obtained reveal several policy implications aimed at enhancing the population agglomeration capacity of the metropolitan area in underdeveloped regions during the new era.
基金The authors thank the project of Remote Sensing Data and Related Parameters Processing in Southwest China(Project No.612106241)the project of Urban Remote Sensing Data Processing and Multi-Source Integration in Central China(Project No.111/611508101).
文摘With economic development and urbanization in China,the rural settlements have experienced great change.To explore the evolution process of rural settlements in terms of land,population and industry can reveal the development law of rural spatial distribution,population structure and industrial economy in different stages and regions.Studying the development status and evolution characteristics of villages in the upper Tuojiang River basin in Southwest China in the past 20 years are of significant value.The upper Tuojiang River basin includes the main types of terrain found in the Southwest region:mountainous,plains,and hills,exhibiting a certain typicality of geographical characteristics.This study took towns and townships at the town-level scale as the basic unit of research,and constructed an evaluation system for village evolution based on'land,population,and industry'.It employed Criteria Importance Through Inter-Criteria Correlation(CRITIC)analysis to examine the characteristics of village evolution in the area from 2000 to 2020,and used geographic detector analysis to identify the leading factors affecting village evolution.The results show that:(1)From 2000 to 2010,villages in the upper Tuojiang River basin experienced significant changes,and the pace of these transformations slowed from 2010 to 2020.(2)From a comprehensive perspective,from 2000 to 2020,villages in hilly areas show a decline,while villages in plain areas near the city center show a positive urbanization development.(3)Road accessibility and distance from the city center are the main factors that explain the spatial differentiation of village evolution degree in the study area.This study elucidates the spatiotemporal evolution characteristics of villages in the upper Tuojiang River basin and identifies the primary factors contributing to their changes,which will provide a reference for investigating the development of rural areas in different terrains of Southwest China.
基金the National Natural Science Foundation of China(32071955)the Natural Science Foundation of Shaanxi Province,China(2018JQ3061).
文摘Lodging is still the key factor that limits continuous increases in wheat yields today,because the mechanical strength of culms is reduced due to low-light stress in populations under high-yield cultivation.The mechanical properties of the culm are mainly determined by lignin,which is affected by the light environment.However,little is known about whether the light environment can be sufficiently improved by changing the population distribution to inhibit culm lodging.Therefore,in this study,we used the wheat cultivar“Xinong 979”to establish a low-density homogeneous distribution treatment(LD),high-density homogeneous distribution treatment(HD),and high-density heterogeneous distribution treatment(HD-h)to study the regulatory effects and mechanism responsible for differences in the lodging resistance of wheat culms under different population distributions.Compared with LD,HD significantly reduced the light transmittance in the middle and basal layers of the canopy,the net photosynthetic rate in the middle and lower leaves of plants,the accumulation of lignin in the culm,and the breaking resistance of the culm,and thus the lodging index values increased significantly,with lodging rates of 67.5%in 2020–2021 and 59.3%in 2021–2022.Under HD-h,the light transmittance and other indicators in the middle and basal canopy layers were significantly higher than those under HD,and the lodging index decreased to the point that no lodging occurred.Compared with LD,the activities of phenylalanine ammonia-Lyase(PAL),4-coumarate:coenzyme A ligase(4CL),catechol-O-methyltransferase(COMT),and cinnamyl-alcohol dehydrogenase(CAD)in the lignin synthesis pathway were significantly reduced in the culms under HD during the critical period for culm formation,and the relative expression levels of TaPAL,Ta4CL,TaCOMT,and TaCAD were significantly downregulated.However,the activities of lignin synthesis-related enzymes and their gene expression levels were significantly increased under HD-h compared with HD.A partial least squares path modeling analysis found significant positive effects between the canopy light environment,the photosynthetic capacity of the middle and lower leaves of plants,lignin synthesis and accumulation,and lodging resistance in the culms.Thus,under conventional high-density planting,the risk of wheat lodging was significantly higher.Accordingly,the canopy light environment can be optimized by changing the heterogeneity of the population distribution to improve the photosynthetic capacity of the middle and lower leaves of plants,promote lignin accumulation in the culm,and enhance lodging resistance in wheat.These findings provide a basis for understanding the mechanism responsible for the lower mechanical strength of the culm under high-yield wheat cultivation,and a theoretical basis and for developing technical measures to enhance lodging resistance.
基金funded by the National Natural Science Foundation of China(Grant No.42075162)the National Key Research and Development Program of China(Grant No.2019YFA0606903)the National Key Scientific and Technological Infrastructure project“Earth System Science Numerical Simulator Facility”(EarthLab).
文摘Temperature extremes over rapidly urbanizing regions with high population densities have been scrutinized due to their severe impacts on human safety and economics.First of all,the performance of the regional climate model RegCM4 with a hydrostatic or non-hydrostatic dynamic core in simulating seasonal temperature and temperature extremes was evaluated over the historical period of 1991–99 at a 12-km spatial resolution over China and a 3-km resolution over the Beijing−Tianjin−Hebei(JJJ)region,a typical urban agglomeration of China.Simulations of spatial distributions of temperature extremes over the JJJ region using RegCM4 with hydrostatic and non-hydrostatic cores showed high spatial correlations of more than 0.8 with the observations.Under a warming climate,temperature extremes of annual maximum daily temperature(TXx)and summer days(SU)in China and the JJJ region showed obvious increases by the end of the 21st century while there was a general reduction in frost days(FD).The ensemble of RegCM4 with different land surface components was used to examine population exposure to temperature extremes over the JJJ region.Population exposure to temperature extremes was found to decrease in 2091−99 relative to 1991−99 over the majority of the JJJ region due to the joint impacts of increases in temperature extremes over the JJJ and population decreases over the JJJ region,except for downtown areas.Furthermore,changes in population exposure to temperature extremes were mainly dominated by future population changes.Finally,we quantified changes in exposure to temperature extremes with temperature increase over the JJJ region.This study helps to provide relevant policies to respond future climate risks over the JJJ region.