Based on vegetation survey data and environmental data of the Yarlung Zangbo River Basin, we conducted a quantitative ecological analysis of the vegetation community composition and the relationship between species an...Based on vegetation survey data and environmental data of the Yarlung Zangbo River Basin, we conducted a quantitative ecological analysis of the vegetation community composition and the relationship between species and the environment in the study area. The results showed that 44 sampling sites and 68 plant species in the study area can be classified into seven subtypes: Artemisia minor + Stipa purpurea;Artemisia demissa + Stipa purpurea + Artemisia wellbyi;Kobresia pygmaea;Trikeraia hookeri;Sophora moorcroftiana + Cotoneaster multiflorus + Pennisetum centrasiaticum;Artemisia frigida;Potentilla fruticosa + Orinus thoroldii. Detrended correspondence analysis(DCA) indicated that both longitude and altitude play important roles in site and species distribution patterns. In addition, canonical correspondence analysis(CCA) revealed that in the upper and middle reaches of the Yarlung Zangbo River Basin, changes in temperature and precipitation caused by longitude are the main factors controlling the formation and transition of vegetation community types. Moreover, natural vegetation could be divided into three types: desert steppe community(source area), alpine steppe community(middle reaches region), and shrub community(confluence of Yarlung Zangbo River and Nyangqu River).展开更多
Qianyanzhou is located in the heart of Jitai Basin in Guanxi town,the county seat of Taihe county in Jiangxi province.Qianyanzhou has a subtropical humid climate and exemplifies the geographic and geomorphologic chara...Qianyanzhou is located in the heart of Jitai Basin in Guanxi town,the county seat of Taihe county in Jiangxi province.Qianyanzhou has a subtropical humid climate and exemplifies the geographic and geomorphologic characteristics of red soil hilly regions in southern China.In the early 1980s,to control soil and water loss and problems with grain yields,Qianyanzhou's researchers proposed an innovative,comprehensive stereoscopic ag- riculture development mode known as the 'Qianyanzhou mode'.This mode included a forest-livestock-food ecosystem,a forest-fruit-economy ecosystem,and a land-water compound stereoscopic system,all located within a watershed.In the Qianyanzhou mode,soil and water loss were completely controlled,thereby promoting environmental conservation and economic development.The state and the society as a whole supported this mode thanks to its far-reaching social impact.In the 21st century,given new societal concerns and continuing economic development,Qianyanzhou mode has been restructured as two ecosystems of forest-fowl and planting-raising circular economies at landscape level,based on an increase in vegetation coverage from 4.3% to more than 80%.These improved modes can significantly enhance the ecosystem,reduce poverty,and to promote the construction of local ecological civilization.This study introduces the Qianyanzhou mode and summarizes its characteristics in different phases.We hope that the information in this study supports improvements to and promotion of the Qianyanzhou mode.We believe the Qianyanzhou mode can play an important role in efforts to modify the agriculture industrial structure,alleviate poverty,and construct ecological civilization.展开更多
基金The 13th Five-year National Key Research and Development Program of China(2016YFC0502006)
文摘Based on vegetation survey data and environmental data of the Yarlung Zangbo River Basin, we conducted a quantitative ecological analysis of the vegetation community composition and the relationship between species and the environment in the study area. The results showed that 44 sampling sites and 68 plant species in the study area can be classified into seven subtypes: Artemisia minor + Stipa purpurea;Artemisia demissa + Stipa purpurea + Artemisia wellbyi;Kobresia pygmaea;Trikeraia hookeri;Sophora moorcroftiana + Cotoneaster multiflorus + Pennisetum centrasiaticum;Artemisia frigida;Potentilla fruticosa + Orinus thoroldii. Detrended correspondence analysis(DCA) indicated that both longitude and altitude play important roles in site and species distribution patterns. In addition, canonical correspondence analysis(CCA) revealed that in the upper and middle reaches of the Yarlung Zangbo River Basin, changes in temperature and precipitation caused by longitude are the main factors controlling the formation and transition of vegetation community types. Moreover, natural vegetation could be divided into three types: desert steppe community(source area), alpine steppe community(middle reaches region), and shrub community(confluence of Yarlung Zangbo River and Nyangqu River).
基金Science and technology service network initiative(STS)of Chinese Academy of Sciences(KFJ-SW-STS-147-4)Taihe Qianyanzhou Academician Workstation Fund
文摘Qianyanzhou is located in the heart of Jitai Basin in Guanxi town,the county seat of Taihe county in Jiangxi province.Qianyanzhou has a subtropical humid climate and exemplifies the geographic and geomorphologic characteristics of red soil hilly regions in southern China.In the early 1980s,to control soil and water loss and problems with grain yields,Qianyanzhou's researchers proposed an innovative,comprehensive stereoscopic ag- riculture development mode known as the 'Qianyanzhou mode'.This mode included a forest-livestock-food ecosystem,a forest-fruit-economy ecosystem,and a land-water compound stereoscopic system,all located within a watershed.In the Qianyanzhou mode,soil and water loss were completely controlled,thereby promoting environmental conservation and economic development.The state and the society as a whole supported this mode thanks to its far-reaching social impact.In the 21st century,given new societal concerns and continuing economic development,Qianyanzhou mode has been restructured as two ecosystems of forest-fowl and planting-raising circular economies at landscape level,based on an increase in vegetation coverage from 4.3% to more than 80%.These improved modes can significantly enhance the ecosystem,reduce poverty,and to promote the construction of local ecological civilization.This study introduces the Qianyanzhou mode and summarizes its characteristics in different phases.We hope that the information in this study supports improvements to and promotion of the Qianyanzhou mode.We believe the Qianyanzhou mode can play an important role in efforts to modify the agriculture industrial structure,alleviate poverty,and construct ecological civilization.
