Large‐scale changes in ratio of C3 and C4 plants in central Asian grassland during the last century as recovered from wool archives

摘要：

The Central Asian grassland is one of the largest biomes on earth with significant influence on global biogeochemical cycles.It is characterized by the co‐existence of plant species with either C4 or C3 photosynthetic pathways, which differ in carbon isotope composition.The C3 /C4 ratio is controlled by climate and land use which have changed during the past century ( global warming and atmospheric CO2 increase ; increased stocking rates).However, it is unknown if these changes have actually elicited changes in the C3 /C4 ratio.We used old and modern woollen materials and carbon isotope analysis to reconstruct vegetation changes, which are recorded in the hair of the grazing animals.

关键词： Carbon Isotope Discrimination C3 plants C4 plants Central Asian Grassland

作者: K.Auerswald T.Maennel Y.F.Bai M.Wittmer H.Schnyder

作者单位: Technische Universitat München,Lehrstuhlfür Grünlandlehre,Am Hochanger 1,D-85350 Freising-Weihenstep Research Center of Plant Ecology,Chinese Academy of Sciences 20 Nanxincun,Xiangshan 10009,Beijing,Ch

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）