首页|Changes in stress within grassland ecosystems in the three counties of the source regions of the Yangtze and Yellow Rivers
Changes in stress within grassland ecosystems in the three counties of the source regions of the Yangtze and Yellow Rivers
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国家科技期刊平台
NETL
NSTL
万方数据
Based on a database of more than 40 years of second production process and energy flow records for Maduo,Qumalai and Yushu counties,a dynamic model of the stress within grassland ecosystems was established using a nonlinear regression method for this source regions of the Yangtze and Yellow Rivers.The results show that dynamic curves of stress within grassland ecosystems in the three counties were in the shape of an inverted "U" during the period 1965-2007.It also revealed that the variation in actual amount of livestock inventories reflected the general trends of the stress within the grassland ecosystems in the source regions,although there were many other factors for the increase or reduction in grassland ecosystem stress.
the source regions of Yangtze and Yellow Riversthe stress within grassland ecosystemsinverted "U"modeldriver
YiPing FANG、DaHe QIN、YongJian DING
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Institute of Mountain Disaster & Environment,Chinese Academy of Sciences,Chengdu 610041,China
Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China
国家重点基础研究发展规划(973计划)Open Fund of the State Key Laboratory of Cryosphere Science
国家科技期刊平台
NSTL
万方数据
