Forming mechanism and classification standard of Black-Soil-Type degraded grassland in Yangtze and Yellow River headwater region of Qinghai-Tibetan plateau

摘要：

Introduction Alpine meadow comprises a principal part of natural ecosystems,accounting for 90％ of the grassland area in Yangtze and Yellow River( YYR).However,an unreasonable stocking rate and grazing system,and the effect of increasing population,global climate change and natural disaster on alpine meadow ecosystems,grassland has resulted in over half being degraded to different degrees.This has seriously threatened the existence of herds and hindered sustainable development of animal husbandry.This report explores the effects of rodents,overgrazing,and climate change on degraded grassland.

关键词： alpine meadow Black‐Soil‐Typedegraded grassland distribution forming mechanism

作者: Y.S.Ma Q.M.Dong S.H.Yang J.J.Shi L.Sheng Y.L.Wang X.D.Sun

作者单位: Qinghai Academy of Animal and Veterinary Sciences,43 Ningzhang Road,Xining,Qinghai,China

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）