Carbon and nitrogen characteristic in plants and soils of the degraded alpine Kobresia pygmaea meadow in the Tibetan Plateau

摘要：

Grassland in the Tibetan Plateau occupies an area of about 1.5 million km2, or two thirds of the total plateau area (Sun & Zheng 1998).For a long time, grasslands were thought to be inexhaustible, but overgrazing has resulted in serious degradation.Cryoturbation and climate change have also accelerated the deterioration of alpine meadow.Ecosystem alterations cause changes in C and N cycling by altering plant production, rates of soil organic matter accumulation and decomposition,and subsequent C storage in the soils.The objective of the study was to evaluate the influence of land degradation on plant and soil C and N content in degraded alpine meadow.

关键词： Alpine Kobresia pygmaea meadow Carbon and nitrogen status Degradation Plants and Soil Tibetan Plateau

作者: Qiji Wang Shixiong Li Zenchun Jing Wenying Wang

作者单位: Northwest Plateau Institute of Biology,The Chinese Academy of Science,Xining,810001 College of life Science,Qinghai Normal University,Xining,810008,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）