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Beautiful Flow Plus与FUjiⅨ玻璃离子水门汀在牙颈部楔状缺损治疗中的应用效果比较
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作者 唐怡 彭凤英 邓赟 《陕西医学杂志》 CAS 2024年第11期1508-1512,共5页
目的:比较Beautiful Flow Plus与FUjiⅨ玻璃离子水门汀在牙颈部楔状缺损治疗中的应用效果。方法:选取牙颈部楔状缺损患者198例(567颗患牙),根据修复时充填材料不同将患者分为观察组101例289颗患牙(Beautiful Flow Plus修复治疗)和对照... 目的:比较Beautiful Flow Plus与FUjiⅨ玻璃离子水门汀在牙颈部楔状缺损治疗中的应用效果。方法:选取牙颈部楔状缺损患者198例(567颗患牙),根据修复时充填材料不同将患者分为观察组101例289颗患牙(Beautiful Flow Plus修复治疗)和对照组97例278颗患牙(FUjiⅨ玻璃离子水门汀修复治疗)。比较两组患者治疗后1、2年填充体状态及修复成功率。比较两组患者治疗后2年咀嚼功能、美观度评分。记录治疗期间和治疗后2年内患者不良事件发生情况。结果:两组治疗后1年患牙填充体状态良好率及修复成功率比较差异无统计学意义(均P>0.05)。治疗后2年,观察组色泽协调性良好及无边缘着色的牙齿比例高于对照组(均P<0.05)。两组其余充填体状态良好率及修复成功率比较差异无统计学意义(均P>0.05)。治疗后2年,两组干燥咀嚼物X50数值较治疗前降低,且观察组低于对照组(均P<0.05)。治疗后2年,两组患者和医生美观度评分较治疗前升高,且观察组高于对照组(均P<0.05)。在治疗期间和治疗后2年内,两组不良事件总发生率比较差异无统计学意义(P<0.05)。结论:与FUjiⅨ玻璃离子水门汀比较,Beautiful Flow Plus在牙颈部楔状缺损治疗中具有较好的远期美学效果,且有助于改善患者咀嚼功能。 展开更多
关键词 牙颈部楔状缺损 beautiful Flow Plus FUjiⅨ玻璃离子水门汀 填充体状态 美观度 咀嚼功能
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Promoting the Construction of Beautiful and Rich China with the Theory of Soil and Water Ecology 被引量:4
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作者 Fazheng SUN 《Meteorological and Environmental Research》 CAS 2020年第2期20-24,共5页
Started from the problems and perplexities of ecological environment in China,the scientific principle and value of the theory of soil and water ecology are discussed. It is thought that the theory of soil and water e... Started from the problems and perplexities of ecological environment in China,the scientific principle and value of the theory of soil and water ecology are discussed. It is thought that the theory of soil and water ecology clarifies the complicated problems of ecological environment. Environmental pollution can be controlled,but it is only a matter of time and cost. Soil and water ecology is the root of ecological environment problems. The clean water and green mountain are destroyed,which cannot be restored. With the theory of soil and water ecology,the idea that clean water and green mountain are golden and silver mountains is read,as well as the way of turning clean water and green mountain into golden and silver mountains and its different impacts on eco-environment. The developed and underdeveloped areas should treat the idea that clean water and green mountain are golden and silver mountains. The application of the theory of soil and water ecology in soil and water conservation broadens the space of soil and water conservation,and it is necessary to establish a national commission for the conservation of soil and water ecology. The theory of soil and water ecology is the golden key to solve the problems of contemporary ecological environment and the theoretical basis for building a beautiful and rich China. 展开更多
关键词 Ecological environment SOIL and WATER ecology Clean WATER and green mountain GOLDEN and silver MOUNTAINS beautiful and RICH
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A BEAUTIFUL CHINA WITH LUCID WATERS AND LUSH MOUNTAINS
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《China Standardization》 2023年第5期2-3,共2页
Firmly upholding the belief that lucid waters and lush mountains are invaluable asset s, proposed by Chinese President Xi Jinping, China has prioritized eco-environmental protection and green development, making great... Firmly upholding the belief that lucid waters and lush mountains are invaluable asset s, proposed by Chinese President Xi Jinping, China has prioritized eco-environmental protection and green development, making great strides in building a beautiful China. 展开更多
关键词 MOUNTAINS china. beautiful
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Contemporary Urban Landscape Design from the Perspective of Beautiful China
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作者 Luo Yongping 《教育研究前沿(中英文版)》 2019年第3期55-58,共4页
In the contemporary urban construction, the division of landscape design disciplines has been fiercely debated among variousdisciplines. Therefore, the author studies the contemporary urban landscape design from the p... In the contemporary urban construction, the division of landscape design disciplines has been fiercely debated among variousdisciplines. Therefore, the author studies the contemporary urban landscape design from the perspective of beautiful China. Eachdiscipline has its own specific aspects of landscape design, and different viewpoints and standpoints have been put forward for itsdesign work and design planning decision-making according to different landscape needs and characteristics. Studies have shownthat the landscapes from the design of the site to the specific construction should have rules and rules to follow in order to maintaina comprehensive and sustainable development in landscape operations. From the perspective of design follow-up function ordesign follow-up emotion, the color symbols in urban landscape design reflect the design value, and it also constantly guidesdesigners to explore the method of urban color design. 展开更多
关键词 beautiful china CITY LANDSCAPE
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China's NGOs in Building Beautiful China
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作者 Li Wei Xiao Lan 《International Understanding》 2013年第4期49-52,共4页
NGOs are voluntary,non-governmental,non-profit social organizations.In China,NGOs active in ecology and environment protection are generally known as environment NGOs.Tasked with protecting ecological environment,they... NGOs are voluntary,non-governmental,non-profit social organizations.In China,NGOs active in ecology and environment protection are generally known as environment NGOs.Tasked with protecting ecological environment,they are selfgoverning organizations with no administrative power which provide environmental public service.In the last 20 years,NGOs have changed 展开更多
关键词 THAN MORE china’s NGOs in Building beautiful china
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Role of the Greenland Sea ice anomaly in the late-spring drought over Northwest China
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作者 Yang Liu Huopo Chen 《Atmospheric and Oceanic Science Letters》 2025年第1期1-5,共5页
Drought across Northwest China in late spring has exerted a vital effect on the local climate and agricultural production,and has been alleviated during the past decades.This study explored the influence of the preced... Drought across Northwest China in late spring has exerted a vital effect on the local climate and agricultural production,and has been alleviated during the past decades.This study explored the influence of the preceding Arctic sea ice on the May drought in Northwest China caused by the precipitation deficit.Further analysis indicated that when the Greenland Sea ice concentration is abnormally high during February to April,the dry conditions in Northwest China tend to be alleviated.The increase of sea ice in the Greenland Sea can excite a meridional circulation,which causes sea surface temperature(SST)anomalies in the North Atlantic via the sea-air interaction,manifested as significant warm SST anomalies over the south of Greenland and the subtropical North Atlantic,but negative SST anomalies over the west of the Azores.This abnormal SST pattern maintains to May and triggers a zonal wave train from the North Atlantic through Scandinavia and Central Asia to Northwest China,leading to abnormal cyclones in Northwest China.Consequently,Northwest China experiences a more humid climate than usual. 展开更多
关键词 Arctic sea ice Greenland Sea North Atlantic SST DROUGHT Northwest china
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Development Strategy of Green Marketing of Pharmaceutical Enterprises against the Background of Building a Beautiful China
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作者 Wang Shuling Wang Mingzheng Yu Chang 《Asian Journal of Social Pharmacy》 2022年第3期260-267,共8页
Objective To study the key issues and links in the construction of green marketing for pharmaceutical enterprises combined with the law of scientific development,so as to make joint efforts for the construction of bea... Objective To study the key issues and links in the construction of green marketing for pharmaceutical enterprises combined with the law of scientific development,so as to make joint efforts for the construction of beautiful China.Methods The literature and interview methods were used to demonstrate that green civilization was to pursue the harmonious coexistence between environment and human beings.Besides,the responsibilities and problems that pharmaceutical enterprises faced in the context of building a beautiful China had to be solved urgently.Results and Conclusion China should summarize historical errors and face the current situation while building a beautiful country.In addition,pharmaceutical enterprises should clarify the key links of green marketing to solve the problem of“three wastes”.Meanwhile,they should bear other responsibilities to promote green civilization and social development. 展开更多
关键词 beautiful china green marketing development strategy
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Beautiful China: A Million Possibilities
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作者 Wang Feng Kuang Lin 《China & The World Cultural Exchange》 2019年第4期11-11,共1页
American singer Christine Welch was awarded as China tourism promotion ambassador? With her popular song named A Million Possibilities, we launched the tourism marketing slogan of"Beautiful China: A Million Possi... American singer Christine Welch was awarded as China tourism promotion ambassador? With her popular song named A Million Possibilities, we launched the tourism marketing slogan of"Beautiful China: A Million Possibilities", boosting American people's perception of travel to China by the singer's poetic music. 展开更多
关键词 AMERICAN Christine china
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Beautiful China Tourism Fair Held in Madrid
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《China & The World Cultural Exchange》 2019年第6期6-6,共1页
The Beautiful China Tourism Fair was held in Madrid on May 1 5 at the historic Palacio de los Duques de Pastrana. The event was jointly organized by the China National Tourist Office, the China Cultural Center in Madr... The Beautiful China Tourism Fair was held in Madrid on May 1 5 at the historic Palacio de los Duques de Pastrana. The event was jointly organized by the China National Tourist Office, the China Cultural Center in Madrid and the Chinese Embassy in Spain and included an exhibition of photographs entitled uBeautiful China". 展开更多
关键词 china TOURISM FAIR HELD Madrid Duques DE Pastrana
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Impact of Land Use Change on Ecosystem Services Values in Danjiangkou Reservoir Area,China in the Context of National Water Network Project Construction
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作者 LIU Linghua ZHENG Liang +3 位作者 WANG Ying LIU Chongchong ZHANG Bowen BI Yuzhe 《Chinese Geographical Science》 2025年第1期111-130,共20页
Investigating the ecological impact of land use change in the context of the construction of national water network project is crucial,as it is imperative for achieving the sustainable development goals of the nationa... Investigating the ecological impact of land use change in the context of the construction of national water network project is crucial,as it is imperative for achieving the sustainable development goals of the national water network and guaranteeing regional ecological stability.Using the Danjiangkou Reservoir Area(DRA),China as the study area,this paper first examined the spatiotemporal dynamics of natural landscape patterns and ecosystem service values(ESV)in the DRA from 2000 to 2018 and then investigated the spatial clustering characteristics of the ESV using spatial statistical analysis tools.Finally,the patch-generating land use simulation(PLUS)model was used to simulate the natural landscape and future changes in the ESV of the DRA from 2018 to 2028 under four different development scenarios:business as usual(BAU),economic development(ED),ecological protection(EP),and shoreline protection(SP).The results show that:during 2000-2018,the construction of water facilities had a significant impact on regional land use/land cover(LULC)change,with a 24830 ha increase in watershed area.ESV exhibited an increasing trend,with a significant and growing spatial clustering effect.The transformation of farmland to water bodies led to accelerated ESV growth,while the transformation of forest land to farmland led to a decrease in the ESV.Normalized difference vegetation index(NDVI)had the strongest effect on the ESV.ESV exhibited a continuous increase from 2018 to 2028 under all the simulation scenarios.The EP scenario had the greatest increase in ESV,while the ED scenario had the smallest increase.The findings suggest that projected land use patterns under different scenarios have varied impacts on ecosystem services(ESs)and that the management and planning of the DRA should balance social,economic,ecological,and security benefits.nomic,ecological,and security benefits. 展开更多
关键词 ecosystem services value(ESV) national water network project of china South-to-North Water Diversion Project(SNWDP)of china multi-scenario simulation Danjiangkou Reservoir Area china
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Spatial Pattern and Influencing Factors of China’s Digital Trade Resilience under the Impact of Trade Frictions
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作者 LI Chunli ZHU Huayou +1 位作者 BAO Weiping QIN Manman 《Chinese Geographical Science》 2025年第1期203-216,共14页
In the era of the digital economy,digital trade has demonstrated strong vitality,becoming a crucial driving force for the highquality development of national and regional economies.However,understanding the resilience... In the era of the digital economy,digital trade has demonstrated strong vitality,becoming a crucial driving force for the highquality development of national and regional economies.However,understanding the resilience of digital trade in the face of external crises is an important topic.Taking the backdrop of Sino-US trade friction,this paper constructs a resilience index system for digital trade.It utilizes entropy method,kernel density estimation,and ArcGIS mapping to calculate and visually analyze the resilience of China’s digital trade from 2017 to 2021.Additionally,a Tobit model is constructed to explore the main influencing factors of digital trade resilience patterns.The research findings indicate:1)temporally,during the period of Sino-US trade friction,China’s digital trade resilience shows an overall upward trend,but there are regional differences in resilience levels across the country,with a severe polarization phenomenon.2)Spatially,high resilience is observed in the eastern and central regions of China,while the western and northeastern regions exhibit low resilience.3)From a dimensional perspective,the resistance of digital trade resilience displays a spatial distribution of high values in the east and low values in the west.The recovery force is aggregated along coastal areas,and the renewal force tends to aggregate along the eastern coastline.4)Factors such as economic scale,industrial structure,urbanization rate,government fiscal expenditure,and technological talents significantly promote the enhancement of digital trade resilience.This study reveals the dynamic characteristics and influencing factors of digital trade resilience in responding to external shocks,providing theoretical basis and policy suggestions for enhancing digital trade resilience,and promoting high-quality economic development in China. 展开更多
关键词 digital trade resilience trade friction resilience pattern resilience factors china
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Environmental Inequality in China’s Urban Expansion:A Case Study of Guangzhou,China
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作者 WANG Shaogu SHEN Jing 《Chinese Geographical Science》 2025年第1期187-202,共16页
Environmental inequality is a prevalent issue in developing countries undergoing urban expansion.Urban expansion induces the formation and evolution of environmental inequality by creating environmental and structural... Environmental inequality is a prevalent issue in developing countries undergoing urban expansion.Urban expansion induces the formation and evolution of environmental inequality by creating environmental and structural conditions that lead to the spatial relocation of environmental hazards and the socio-spatial segregation of different groups in developing countries.This study investigated the spatial patterns and temporal trends of environmental inequality under urban expansion in Guangzhou,a megacity in China.It considered how environmental disparities and socio-demographic attributes interact in terms of industrial pollution exposure using additive semiparametric quantile regression,combined with spatial visualisation,on the basis of the economic and population census data from 1990 to 2020.This study revealed that urban expansion sparked the spatial displacement of environmental risks and the social-spatial differentiation,exposing the peripheral regions and disadvantaged groups to higher environmental risks.A reciprocal transformation occurred between central and peripheral regions,as well as a process of redistributing environmental risks across social space.In the context of urban expansion in developing countries,the causes of environmental inequality shifted from individual socio-economic differences to structural factors,such as industrial layout and social division of labour in cities,leading to the spatial displacement and concealment of environmental inequality.This study provides insights and guidance for policymakers to address the issue of environmental inequality in the context of urban expansion. 展开更多
关键词 environmental inequality urban expansion spatiotemporal evolution additive semiparametric quantile regression Guangzhou china
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Water Quality,Influential Factors,and Management Strategies from 2016 to 2020 in the Yangtze River Economic Belt,China
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作者 LIN Lanyu GUO Congrong +6 位作者 CHEN Yanan HE Lihuan YAN Luyu FANG Dekun MA Guangwen ZHANG Fengying LI Mingsheng 《Chinese Geographical Science》 2025年第1期175-186,共12页
The Yangtze River economic belt(YREB),China is important to the Chinese economy and for supporting sustainable development.Clarifying the relationship between water quality indices and socioeconomic indicators could h... The Yangtze River economic belt(YREB),China is important to the Chinese economy and for supporting sustainable development.Clarifying the relationship between water quality indices and socioeconomic indicators could help improve aquatic environment management in the YREB and our understanding of the causes and effects of water quality variations in other large river basins.In this study,river water quality,factors affecting water quality,and management strategies,and correlations between water quality indices and socioeconomic indicators in the YREB during the 13th Five-Year Plan period(2016-2020)were assessed.The single-factor evaluation method,constant price for GDP,and correlation analyses were adopted.The results showed that:1)water quality in the YREB improved during the 13th Five-Year Plan period.The number of aquatic environment sections meeting GradeⅠ-Ⅲwater quality standards increased by 13.1%and the number below Grade V decreased by 2.9%.2)The values of 12 indicators in the YREB exceeded relevant standards.The indicators with highest concentreation were the total phosphorus,chemical oxygen demand,ammonia nitrogen,and permanganate index,which were relatively high in downstream regions in Anhui Province,Jiangsu Province,and Shanghai Municipality.3)Ammonia nitrogen,chemical oxygen demand,and total phosphorus emissions per unit area and water extraction per unit area are relatively high in the three downstream regions mentioned above.4)Increased domestic sewage discharges have increased total wastewater discharges in the YREB.5)River water quality in the YREB strongly correlated with population,economic,and water resource indices and less strongly correlated with government investment,agriculture,meteorology,energy,and forestry indices.This confirmed the need to decrease wastewater discharges and non-point-source pollutant emissions.The aquatic environment could be improved by taking reasonable measures to control population growth,adjusting the industrial structure to accelerate industrial transformation and increase the proportion of tertiary industries,and investing in technological innovations to protect the environment. 展开更多
关键词 water quality FACTORS coping strategies Yangtze River economic belt(YREB) china
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X-Ray《透视中国》 China The Beautiful《美哉中国》
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《对外传播》 2009年第3期63-63,共1页
X—Ray是旅美影评家周黎明近几年英文时评的结集,99篇短小精悍的文章涵盖了几乎所有中国近年来的热点事件,从网络文化到星巴克撤出故宫,无所不包。周黎明的英文时评曾被美国、英国的主流媒体引用。在西方人看来,周黎明的时评虽然发... X—Ray是旅美影评家周黎明近几年英文时评的结集,99篇短小精悍的文章涵盖了几乎所有中国近年来的热点事件,从网络文化到星巴克撤出故宫,无所不包。周黎明的英文时评曾被美国、英国的主流媒体引用。在西方人看来,周黎明的时评虽然发表在《中国日报》这样的中国官方媒体上,但是他的观点很独特,并没有想象中的“官腔”。这与他在美国生活多年的经历不无关系,但更多来自于他对美国文化和中国文化的双重深入了解。 展开更多
关键词 《中国日报》 beautiful The 美国文化 主流媒体 网络文化 中国文化 时评
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Impact of Climate Change on Crop-cropland Coupling Relationship:A Case Study of the Loess Plateau in China
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作者 LI Shunke LIU Yansui +1 位作者 SHAO Yajing WANG Xiaochen 《Chinese Geographical Science》 2025年第1期92-110,共19页
Climate change brings new challenges to the sustainable development of agriculture in the new era.Accurately grasping the patterns of climate change impacts on agricultural systems is crucial for ensuring agricultural... Climate change brings new challenges to the sustainable development of agriculture in the new era.Accurately grasping the patterns of climate change impacts on agricultural systems is crucial for ensuring agricultural sustainability and food security.Taking the Loess Plateau(LP),China as an example,this study used a coupling coordination degree model and spatial autocorrelation analysis to portray the spatial and temporal features of crop-cropland coupling relationship from 2000 to 2020 and explored the impact law of climate change through geographically and temporally weighted regression(GTWR).The results were as follows:1)the crop-cropland coupling coordination degree of the LP showed a gradual upward trend from 2000 to 2020,forming a spatial pattern with lower values in the central region and higher values in the surrounding areas.2)There was a positive correlation in the spatial distribution of cropcropland coupling coordination degree in the LP from 2000 to 2020,and the high value-low value(H-L)and low value-low value(L-L)agglomerations continued to expand eastward,while the spatial and temporal evolution of the high value-high value(H-H)and low value-high value(L-H)agglomerations was not obvious.3)The impacts of climatic elements on crop-cropland coupling coordination degree in the LP showed strong heterogeneity in time scales.The inhibitory impacts of summer days(SU)and frost days(FD)accounted for a higher proportion,while the annual average temperature(TEM)had both promoting and inhibiting impacts.The impacts proportion and intensity of extreme heavy precipitation day(R25),continuous drought days(CDD),and annual precipitation(PRE)all experienced significant changes.4)In space,the impacts of SU and FD on the crop-cropland coupling coordination degree varied with latitude and altitude.The adaptability of the LP to R25 gradually strengthened,and the extensions of CDD and increase of PRE led to the increasing inhibition beyond the eastern region of LP,and TEM showed a promoting impact in the Fenwei Plain.As an important grainproducing area in China,the LP should actively deal with the impacts of climate change on the crop-cropland coupling relationship,vigorously safeguard food security,and promote sustainable agricultural development. 展开更多
关键词 climate change crop-cropland coupling relationship geographically and temporally weighted regression(GTWR) extreme weather events Loess Plateau china
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Changes in River Cross-section Morphology and Response to Streamflow and Sediment Processes in Middle Reaches of Yellow River,China
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作者 WEN Yongfu LI Pengfei +4 位作者 LI Mengzhen MA Chaohui GAO Peng MU Xingmin ZHAO Guangju 《Chinese Geographical Science》 2025年第1期161-174,共14页
Changes in river cross-section morphology have decisive influences on the flood discharge and sand transport capacity of rivers;thus,these changes strongly reflect the vitality of a river.In this paper,based on the ri... Changes in river cross-section morphology have decisive influences on the flood discharge and sand transport capacity of rivers;thus,these changes strongly reflect the vitality of a river.In this paper,based on the river cross-section and water and sediment data of two different periods(1974−1987 and 2007−2021),the trend analysis,change-point analysis and sediment rating curve method were used to analyze the change process of river cross-section morphology and its response to streamflow and sediment changes in the main river stream of the Yellow River at the Longmen hydrological station.From 1974 to 1987(except in 1977),the riverbed experi-enced siltation,and the riverbed elevation rose.Conversely,from 2007 to 2021,the riverbed experienced scouring,and the riverbed el-evation gradually decreased.The cross-section shape changed from rectangular to U-shaped(deeper on the right side)at the Longmen cross-section.The changes in streamflow and sediment processes significantly impacted the evolution of river cross-section.Stream-flow(P<0.05),sediment discharge(P<0.01),and the sediment load coefficients(P<0.01)decreased significantly.The relationship between the water depth and sediment load coefficients followed a power function.The decreasing trend in sediment discharge was sig-nificantly stronger than that in streamflow.Suspended sediment particles tended to become finer.The sediment rating curve indicates that the sediment supply from upstream decreased while the erosive power in the river channel increased,leading to a gradual decline in riverbed elevation at the Longmen cross-section from 2007 to 2021.These findings help us better understand the impacts of ecological restoration on changes in river streamflow and sediment during river evolution. 展开更多
关键词 cross-section shape riverbed elevation water depth streamflow sediment discharge eco-restoration Longmen station middle reaches of the Yellow River china
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Territorial Ecological Restoration with a High-carbon Storage Focus in the Beibu Gulf Urban Agglomeration of China:Insights from Carbon Metabolism Spatial Security Patterns
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作者 QIN Menglin LIU Yuting +5 位作者 TAN Qianxi ZHU Ziming WU Xinyu JIANG Hongbo LI Hang SHI Qianqian 《Chinese Geographical Science》 2025年第1期73-91,共19页
This study focuses on urgent research on restoring and enhancing carbon storage capacity in the Beibu Gulf Urban Agglomer-ation of China,a key area in the‘Belt and Road’Initiative,which aligns with carbon peaking an... This study focuses on urgent research on restoring and enhancing carbon storage capacity in the Beibu Gulf Urban Agglomer-ation of China,a key area in the‘Belt and Road’Initiative,which aligns with carbon peaking and neutrality goals.This research ana-lyzes the spatial characteristics of carbon metabolism from 2000 to 2020 and uses models to identify stable carbon sink areas,positive carbon flow corridors,and carbon sequestration nodes.The goal is to construct a carbon metabolism spatial security pattern(CMSSP)and propose territorial ecological restoration strategies under different development demand scenarios.The results show the following:1)in 2020,the study area’s carbon sink decreased by 8.29×10^(4) t C/yr compared with that in 2010 and by 10.83×10^(4) t C/yr compared with that in 2000.High-carbon sinks were found mainly in mountainous areas,whereas low-carbon sinks are concentrated in urban con-struction land,rural residential areas,and land margins.2)From 2000 to 2020,the spatial security pattern of carbon metabolism tended to be‘high in the middle of the east and west and low in the gulf.’In 2000,2010,and 2020,16 stable carbon sinks were identified.The carbon energy flow density in Guangxi was greater than that in Guangdong and Hainan,with positive carbon flow corridors located primarily in Guangxi and Guangdong.The number of carbon sequestration nodes remained stable at approximately 15,mainly in Guangxi and Hainan.3)Scenario simulations revealed that under the Nature-based mild restoration scenario,the carbon sink rate will reach 611.85×10^(4) t C/yr by 2030 and increase to 612.45×10^(4) t C/yr by 2060,with stable carbon sinks increasing to 18.In the restora-tion scenario based on Anti-globalization,the carbon sink will decrease from 610.24×10^(4) t C/yr in 2030 to 605.19×10^(4) t C/yr in 2060,with the disappearance of some positive carbon flow corridors and stable carbon sinks.Under the Human-based sustainable restoration scenario,the carbon sink area will decrease from 607.00×10^(4) t C/yr in 2030 to 596.39×10^(4) t C/yr in 2060,with carbon sink areas frag-menting and positive carbon flow corridors becoming less dense.4)On the basis of the current and predicted CMSSPs,this study ex-plores spatial ecological restoration strategies for high-carbon storage areas in bay urban agglomerations at four levels:the land control region,urban agglomeration structure system,carbon sink structure and bay structure control region. 展开更多
关键词 carbon metabolism spatial security pattern(CMSSP) territorial ecological restoration carbon sink carbon storage capacity Beibu Gulf Urban Agglomeration china
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Spatiotemporal Variation and Influencing Factors of Atmospheric CO_(2) Concentration in China
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作者 ZHU Weixin ZHANG Hong +2 位作者 ZHANG Xiaoyu GUO Haohao LIU Yong 《Chinese Geographical Science》 2025年第1期149-160,共12页
Rapid increases in Carbon dioxide(CO_(2))levels could trigger unpredictable climate change.The assessment of spatiotempor-al variation and influencing factors of CO_(2) concentration are helpful in understanding the s... Rapid increases in Carbon dioxide(CO_(2))levels could trigger unpredictable climate change.The assessment of spatiotempor-al variation and influencing factors of CO_(2) concentration are helpful in understanding the source/sink balance and supporting the formu-lation of climate policy.In this study,Greenhouse Gases Observing Satellite(GOSAT)data were used to explore the variability of CO_(2) concentrations in China from 2009 to 2020.Meteorological parameters,vegetation cover,and anthropogenic activities were combined to explain the increase in CO_(2) concentration,using pixel-based correlations and Covariance Based Structural Equation Modeling(CB-SEM)analysis.The results showed that the influence of vertical CO_(2) transport diminished with altitude,with a distinct inter-annual in-crease in CO_(2) concentrations at 17 vertical levels.Spatially,the highest values were observed in East China,whereas the lowest were observed in Northwest China.There were significant seasonal variations in CO_(2) concentration,with maximum and minimum values in spring(April)and summer(August),respectively.According to the pixel-based correlation analysis,the near-surface CO_(2) concentration was positively correlated with population(r=0.99,P<0.001),Leaf Area Index(LAI,r=0.95,P<0.001),emissions(r=0.91,P<0.001),temperature(r=0.60,P<0.05),precipitation(r=0.34,P>0.05),soil water(r=0.29,P>0.05),nightlight(r=0.28,P>0.05);and negatively correlated with wind speed(r=−0.58,P<0.05).CB-SEM analysis revealed that LAI was the most important con-trolling factor explaining CO_(2) concentration variation(total effect of 0.66),followed by emissions(0.58),temperature(0.45),precipita-tion(0.30),wind speed(−0.28),and soil water(−0.07).The model explained 93% of the increase in CO_(2) concentration.Our results provide crucial information on the patterns of CO_(2) concentrations and their driving mechanisms,which are particularly significant in the context of climate change. 展开更多
关键词 Greenhouse Gases Observing Satellite(GOSAT) CO_(2)concentration influencing factors pixel-based correlation Covari-ance Based Structural Equation Modeling(CB-SEM) china
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Dynamic Variation of Vegetation NPP and Its Driving Forces in the Yellow River Basin, China
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作者 WANG Shimei MA Yutao +1 位作者 GONG Jie JIN Tiantian 《Chinese Geographical Science》 2025年第1期24-37,共14页
The productivity of vegetation is influenced by both climate change and human activities.Understanding the specific contributions of these influencing factors is crucial for ecological conservation and regional sustai... The productivity of vegetation is influenced by both climate change and human activities.Understanding the specific contributions of these influencing factors is crucial for ecological conservation and regional sustainability.This study utilized a combination of multi-source data to examine the spatiotemporal patterns of Net Primary Productivity(NPP)in the Yellow River Basin(YRB),China from 1982 to 2020.Additionally,a scenario-based approach was employed to compare Potential NPP(PNPP)with Actual NPP(ANPP)to determine the relative roles of climatic and human factors in NPP changes.The PNPP was estimated using the Lund-Potsdam-Jena General Ecosystem Simulator(LPJ-GUESS)model,while ANPP was evaluated by the Carnegie-Ames-Stanford Approach(CASA)model using different NDVI data sources.Both model simulations revealed that significant greening occurring in the YRB,with a gradual decrease observed from southeast to northwest.According to the LPJ_GUESS model simulations,areas experiencing an increasing trend in NPP accounted for 86.82% of the YRB.When using GIMMS and MODIS NDVI data with CASA model simulations,areas showing an increasing trend in NPP accounted for 71.42% and 97.02%,respectively.Furthermore,both climatic conditions and human factors had positive effects on vegetation restoration;approximated 41.15% of restored vegetation areas were influenced by both climate variation and human activities,while around 31.93% were solely affected by climate variation.However,it was found that human activities served as the principal driving force of vegetation degradation within the YRB,impacting 26.35% of degraded areas solely due to human activities.Therefore,effective management strategies encompassing both human activities and climate change adaptation are imperative for facilitating vegetation restoration within this region.These findings will valuable for enhancing our understanding in NPP changes and its underlying factors,thereby contributing to improved ecological management and the pursuit of regional carbon neutrality in China. 展开更多
关键词 Net Primary Productivity(NPP) vegetation greening Carnegie-Ames-Stanford Approach(CASA) Lund-Potsdam-Jena General Ecosystem Simulator(LPJ_GUESS) Yellow River Basin(YRB) china
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Spatial Patterns and Controlling Factors of Soil Organic Carbon and Total Nitrogen in the Three River Headwaters Region,China
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作者 CUI Qiao LI Zongxing +2 位作者 FENG Qi ZHANG Baijuan ZHAO Yue 《Chinese Geographical Science》 2025年第1期131-148,共18页
The alpine ecosystem has great potential for carbon sequestration.Soil organic carbon(SOC)and total nitrogen(TN)are highly sensitive to climate change,and their dynamics are crucial to revealing the effect of climate ... The alpine ecosystem has great potential for carbon sequestration.Soil organic carbon(SOC)and total nitrogen(TN)are highly sensitive to climate change,and their dynamics are crucial to revealing the effect of climate change on the structure,function,and services of the ecosystem.However,the spatial distribution and controlling factors of SOC and TN across various soil layers and vegetation types within this unique ecosystem remain inadequately understood.In this study,256 soil samples in 89 sites were collected from the Three River Headwaters Region(TRHR)in China to investigate SOC and TN and to explore the primary factors affecting their distribution,including soil,vegetation,climate,and geography factors.The results show that SOC and TN contents in 0-20,20-40,40-60,and 60-80 cm soil layers are 24.40,18.03,14.04,12.40 g/kg and 2.46,1.90,1.51,1.17 g/kg,respectively;with higher concentrations observed in the southeastern region compared to the northwest of the TRHR.One-way analysis of variance reveals that SOC and TN levels are elevated in the alpine meadow and the alpine shrub relative to the alpine steppe in the 0-60 cm soil layers.The structural equation model explores that soil water content is the main controlling factor affecting the variation of SOC and TN.Moreover,the geography,climate,and vegetation factors notably indirectly affect SOC and TN through soil factors.Therefore,it can effectively improve soil water and nutrient conditions through vegetation restoration,soil improvement,and grazing management,and the change of SOC and TN can be fully understood by establishing monitoring networks to better protect soil carbon and nitrogen. 展开更多
关键词 controlling factors different soil layers soil organic carbon(SOC) soil total nitrogen(TN) alpine ecosystem the Three River Headwaters Region(TRHR) china
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