What caused the degradation in 20 years of elm (Ulmus Pumila L.) woodland in China

摘要：

As a special rangeland, elm ( Ulmus Pumila L.) woodland, fixing sand and supplying forage to herbivores, is a woody plant community distributed on sand dunes in meadow steppe regions under semi‐hygrophilous or semi‐arid climate (Zhu,1992).Since 1980s, its distribution region has been shrinking severely in China.So we aim to anchor the degraded reasons through comparing elm woodland species changes under different disturbances between 20years.

关键词： Elm wood land diversity Shannon‐Weaver index farming grazing

作者: Li Liu Tingcheng Zhu

作者单位: Institute of Grassland Science,Key Laboratory of Vegetation Ecology,Ministry of Education,Northeast Institute of Grassland Science,Key Laboratory of Vegetation Ecology,Ministry of Education,Northeast

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）