Changes in stress within grassland ecosystems in the three counties of the source regions of the Yan

• 作 者: Fang YiPing Qin DaHe Ding Y
• 机 构: ChineseAcadSci,ChineseAcadSci
• 出 处: 干旱区科学：英文版
• 发表日期: 2010年2期
• 关键词: the source regions of YANGTZE and Yellow Rivers the STRESS WITHIN GRASSLAND ECOS
• 基金项目: supported by a grant from the National Basic Research Program of China (2007CB411507),Open Fund of the State Key Laboratory of Cryosphere Science (SKLCS08-05)

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 ecosys-tems was established using a nonlinear regression method for this sou