The characteristics of photosynthesis and water metabolism of Caragana microphylla Lam.,C. davazamcii Sancz. and C. korshinskii Kom. populations in different sites (117.6o-105.7o E, 44.6o-38.8o N)were studied. (1) Fro...The characteristics of photosynthesis and water metabolism of Caragana microphylla Lam.,C. davazamcii Sancz. and C. korshinskii Kom. populations in different sites (117.6o-105.7o E, 44.6o-38.8o N)were studied. (1) From the east to the west, the responses of the three species to photosyntheticallyavailable radiation (PAR) in net photosynthesis rate increased, the relative humidity of the air whichcorresponded to the occurrence of maximum photosynthesis rate decreased, and the corresponding airtemperature increased. Along the same gradient, the before-noon superiority of the photosynthesis be-came evident, and the photosynthesis rate and the light use efficiency (LUE ) increased, while the transp-iration rate decreased, thus the water use efficiency (WUE ) increased notably, and the leaf water contentdecreased gradually. From the east to the west, the plants took a water-saving strategy step by step withhigher photosynthesis rate and lower transpiration rate. These physiological changes in the plants wereadaptable to the conditions of light, temperature and humidity in the habitat of the plants, and might be thebiological foundation for the geographical transition among C. microphylla , C. davazamcii and C. korshinskii.(2) The adaptation of photosynthetic system of C. microphylla , C. davazamcii and C. korshinskii to PAR, airhumidity and temperature exhibited the interspecific continuity, which was consistent with theenvironmental gradient. In different species and different sites, the diurnal changes of net photosynthesisrate, the daily cumulative value of net photosynthesis, the diurnal changes of transpiration rate, the dailycumulative value of transpiration, the water use efficiency and the diurnal changes of leaf water contentvaried with longitudinal descent (from the east to the west). The characteristics of photosynthesis andwater metabolism indicated that the geographical transition among C. microphylla , C. davazamcii and C.korshinskii was in gradual change, and these three species formed a geographical cline.展开更多
The former plant population survey has shown that three genetically-related species, Caraganamicrophylla Lam., C. davazamcii Sancz. and C. korshinskii Kom., form a geographical replacement series inNei Mongol Plateau....The former plant population survey has shown that three genetically-related species, Caraganamicrophylla Lam., C. davazamcii Sancz. and C. korshinskii Kom., form a geographical replacement series inNei Mongol Plateau. The present study on population distribution, taxonomy, morphology, development andgenetic structure demonstrated that the geographical distribution of these three species was successiveand in gradual change, thus forming a geographical cline which extended from the east to the west of NeiMongol Plateau. With an analysis of climate change over time, it was considered that the formation of thisgeographical cline was a result of plant adaptation to its natural environment.展开更多
Promalactis neixiangensis sp. nov. is described as new to science, and the female of P spinosa Wang et Li is reported for the first time. The adult and the male genitalia of the new species, and the female genitalia o...Promalactis neixiangensis sp. nov. is described as new to science, and the female of P spinosa Wang et Li is reported for the first time. The adult and the male genitalia of the new species, and the female genitalia of P spinosa Wang et Li are photographed. The type specimens are deposited in the Insect Collection, College of Life Sciences, Nankai University, Tianjin.展开更多
Three species in the genus Promalactis Meyrick are reported from China. Promalactis saligna sp. nov. is described as new; P. tamdaoella Lvovsky, 1988 and R vittapenna Kim ＆ Park, 2010 are newly recorded for China, wi...Three species in the genus Promalactis Meyrick are reported from China. Promalactis saligna sp. nov. is described as new; P. tamdaoella Lvovsky, 1988 and R vittapenna Kim ＆ Park, 2010 are newly recorded for China, with redescription of the former species. Promalactis griselocula Kim ＆ Park, 2010, syn. nov., is synonymized with B tamdaoella. Images of adults and illustrations of genitalia are provided.展开更多
Backgroud:As one of the traditional rehabilitation exercises recommended by the State Sports General Administration,Baduanjin is widely used in the prevention and treatment of coronary heart disease.To systematically ...Backgroud:As one of the traditional rehabilitation exercises recommended by the State Sports General Administration,Baduanjin is widely used in the prevention and treatment of coronary heart disease.To systematically evaluate the impact of Baduanjin exercise on rehabilitation of patients with coronary heart disease.A search in Cochrane Library,PubMed,EMbase,Web of science,China Biology Medicine disc(CBM),CNKI,Wan Fang Date and VIP database was performed in order to collect randomized controlled trials(RCTs)of Baduanjin in patients with coronary heart disease from inception to November 2018.Two reviewers independently screened literatures,extracted data and assessed risk of bias of included studies,then,meta-analysis was performed by using RevMan 5.3.Results:A total of 8 RCTs including 615 patients were considered.Compared with the control regime,Baduanjin improved the ejection fraction of patients[MD=2.99,95%CI(1.54,4.45),P<0.001],increased the walking distance of six minutes[SMD=2.29,95%CI(0.44,4.13),P=0.02],decreased the score of self-rating anxiety scale and self-rating depression scale[MD=-5.06,95%CI(-6.63,-3.49),P<0.001],[MD=-5.12,95%CI(-8.73,-1.50),P=0.006].Conclusion:The current research results showed that Baduanjin improved cardiopulmonary function and exercise tolerance and alleviated patients’bad mood.展开更多
Mild cognitive impairment,as a preventable component in the development of irreversible Alzheimer's disease,plays an important role in the prevention and control of mild cognitive impairment.As a traditional aerob...Mild cognitive impairment,as a preventable component in the development of irreversible Alzheimer's disease,plays an important role in the prevention and control of mild cognitive impairment.As a traditional aerobic exercise,Ba Duanjin has a certain influence on mild cognitive impairment from the perspective of traditional Chinese medicine,specific diseases and neurology.This article summarized the evidence of Ba Duanjin in the application of mild cognitive impairment,in order to provide reference for the clinical application of Ba Duanjin in the future.展开更多
The carbon and water cycle,an important biophysical process of terrestrial ecosystems,is changed by anthropogenic revegetation in arid and semiarid areas.However,there is still a lack of understanding of the mechanism...The carbon and water cycle,an important biophysical process of terrestrial ecosystems,is changed by anthropogenic revegetation in arid and semiarid areas.However,there is still a lack of understanding of the mechanisms of carbon and water coupling in intrinsic ecosystems in the context of human activities.Based on the CO,and H,O flux measurements of the desert steppe with the planted shrub Caragana liouana,this study explored the carbon and water flux coupling of the ecosystem by analyzing the variations in gross primary productivity(GPP),evapotranspiration(ET)and water use efficiency(WUE)and discussing the driving mechanisms of biological factors.The seasonal variation in climate factors induced a periodic variation pattern of biophysical traits and carbon and water fluxes.The GPP and ET fluctuated in seasons,but the WUE was relatively stable in the growing season.The GP,ET and WUE were significantly driven by global radiation(R,),temperature(T,and T),water vapor pressure deficit,leaf area index and plant water stress index(PWSI).However,R,temperature and PWSI were the most important factors regulating WUE.R,and temperature directly affected WUE with a positive effect but indirectly inhibited WUE by rising PWSl.Plant water stress inhibited photosynthesis and transpiration of the planted shrub community in the desert steppe.When the plant water stress exceeded a threshold(PWSI>0.54),the WUE would decrease since the GPP responded more quickly to the plant water stress than ET.Our findings suggest that policies related to large-scale carbon sequestration initiatives under afforestation must first fully consider the status of water consumption and WUE.展开更多
文摘The characteristics of photosynthesis and water metabolism of Caragana microphylla Lam.,C. davazamcii Sancz. and C. korshinskii Kom. populations in different sites (117.6o-105.7o E, 44.6o-38.8o N)were studied. (1) From the east to the west, the responses of the three species to photosyntheticallyavailable radiation (PAR) in net photosynthesis rate increased, the relative humidity of the air whichcorresponded to the occurrence of maximum photosynthesis rate decreased, and the corresponding airtemperature increased. Along the same gradient, the before-noon superiority of the photosynthesis be-came evident, and the photosynthesis rate and the light use efficiency (LUE ) increased, while the transp-iration rate decreased, thus the water use efficiency (WUE ) increased notably, and the leaf water contentdecreased gradually. From the east to the west, the plants took a water-saving strategy step by step withhigher photosynthesis rate and lower transpiration rate. These physiological changes in the plants wereadaptable to the conditions of light, temperature and humidity in the habitat of the plants, and might be thebiological foundation for the geographical transition among C. microphylla , C. davazamcii and C. korshinskii.(2) The adaptation of photosynthetic system of C. microphylla , C. davazamcii and C. korshinskii to PAR, airhumidity and temperature exhibited the interspecific continuity, which was consistent with theenvironmental gradient. In different species and different sites, the diurnal changes of net photosynthesisrate, the daily cumulative value of net photosynthesis, the diurnal changes of transpiration rate, the dailycumulative value of transpiration, the water use efficiency and the diurnal changes of leaf water contentvaried with longitudinal descent (from the east to the west). The characteristics of photosynthesis andwater metabolism indicated that the geographical transition among C. microphylla , C. davazamcii and C.korshinskii was in gradual change, and these three species formed a geographical cline.
文摘The former plant population survey has shown that three genetically-related species, Caraganamicrophylla Lam., C. davazamcii Sancz. and C. korshinskii Kom., form a geographical replacement series inNei Mongol Plateau. The present study on population distribution, taxonomy, morphology, development andgenetic structure demonstrated that the geographical distribution of these three species was successiveand in gradual change, thus forming a geographical cline which extended from the east to the west of NeiMongol Plateau. With an analysis of climate change over time, it was considered that the formation of thisgeographical cline was a result of plant adaptation to its natural environment.
基金The research was supported by the National Natural Science Foundation of China (30570206)the Foundation of Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A & F University
文摘Promalactis neixiangensis sp. nov. is described as new to science, and the female of P spinosa Wang et Li is reported for the first time. The adult and the male genitalia of the new species, and the female genitalia of P spinosa Wang et Li are photographed. The type specimens are deposited in the Insect Collection, College of Life Sciences, Nankai University, Tianjin.
基金supported by the Research Fund for the Doctoral Program of Higher Education of China (20100031110024)the National Natural Science Foundation of China (30970398)
文摘Three species in the genus Promalactis Meyrick are reported from China. Promalactis saligna sp. nov. is described as new; P. tamdaoella Lvovsky, 1988 and R vittapenna Kim ＆ Park, 2010 are newly recorded for China, with redescription of the former species. Promalactis griselocula Kim ＆ Park, 2010, syn. nov., is synonymized with B tamdaoella. Images of adults and illustrations of genitalia are provided.
文摘Backgroud:As one of the traditional rehabilitation exercises recommended by the State Sports General Administration,Baduanjin is widely used in the prevention and treatment of coronary heart disease.To systematically evaluate the impact of Baduanjin exercise on rehabilitation of patients with coronary heart disease.A search in Cochrane Library,PubMed,EMbase,Web of science,China Biology Medicine disc(CBM),CNKI,Wan Fang Date and VIP database was performed in order to collect randomized controlled trials(RCTs)of Baduanjin in patients with coronary heart disease from inception to November 2018.Two reviewers independently screened literatures,extracted data and assessed risk of bias of included studies,then,meta-analysis was performed by using RevMan 5.3.Results:A total of 8 RCTs including 615 patients were considered.Compared with the control regime,Baduanjin improved the ejection fraction of patients[MD=2.99,95%CI(1.54,4.45),P<0.001],increased the walking distance of six minutes[SMD=2.29,95%CI(0.44,4.13),P=0.02],decreased the score of self-rating anxiety scale and self-rating depression scale[MD=-5.06,95%CI(-6.63,-3.49),P<0.001],[MD=-5.12,95%CI(-8.73,-1.50),P=0.006].Conclusion:The current research results showed that Baduanjin improved cardiopulmonary function and exercise tolerance and alleviated patients’bad mood.
文摘Mild cognitive impairment,as a preventable component in the development of irreversible Alzheimer's disease,plays an important role in the prevention and control of mild cognitive impairment.As a traditional aerobic exercise,Ba Duanjin has a certain influence on mild cognitive impairment from the perspective of traditional Chinese medicine,specific diseases and neurology.This article summarized the evidence of Ba Duanjin in the application of mild cognitive impairment,in order to provide reference for the clinical application of Ba Duanjin in the future.
基金the National Natural Science Foundation of China(41967027)the Natural Science Foundation of Ningxia Province(2022AAC02011)+2 种基金the Excellent Talents Support Program of Ningxia Province(RQoo12)the Key Research and Development Program of Ningxia Province(2021BEG02010)the Special Plan for Local Sci-Tech Development Guided by the Central Government of China.
文摘The carbon and water cycle,an important biophysical process of terrestrial ecosystems,is changed by anthropogenic revegetation in arid and semiarid areas.However,there is still a lack of understanding of the mechanisms of carbon and water coupling in intrinsic ecosystems in the context of human activities.Based on the CO,and H,O flux measurements of the desert steppe with the planted shrub Caragana liouana,this study explored the carbon and water flux coupling of the ecosystem by analyzing the variations in gross primary productivity(GPP),evapotranspiration(ET)and water use efficiency(WUE)and discussing the driving mechanisms of biological factors.The seasonal variation in climate factors induced a periodic variation pattern of biophysical traits and carbon and water fluxes.The GPP and ET fluctuated in seasons,but the WUE was relatively stable in the growing season.The GP,ET and WUE were significantly driven by global radiation(R,),temperature(T,and T),water vapor pressure deficit,leaf area index and plant water stress index(PWSI).However,R,temperature and PWSI were the most important factors regulating WUE.R,and temperature directly affected WUE with a positive effect but indirectly inhibited WUE by rising PWSl.Plant water stress inhibited photosynthesis and transpiration of the planted shrub community in the desert steppe.When the plant water stress exceeded a threshold(PWSI>0.54),the WUE would decrease since the GPP responded more quickly to the plant water stress than ET.Our findings suggest that policies related to large-scale carbon sequestration initiatives under afforestation must first fully consider the status of water consumption and WUE.
