Vegetation and environmental changes in western Chinese Loess Plateau since 13.0 ka BP

作     者：SUN Aizhi FENG Zhaodong MA Yuzhen 

作者机构：School of Geography Science Southwest University Chongqing 400715 China MOE Key Laboratory of Western China＇s Environmental Systems College of Earth ＆ Environment SciencesLanzhou University Lanzhou 730000 China Department of Geology Baylor University Waco TX76795 USA College of Resources Science and Technology Research Beijing Normal University Beijing 100875 China 

出 版 物：《Journal of Geographical Sciences》 (地理学报（英文版）)

年 卷 期：2010年第20卷第2期

页      面：177-192页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 09[农学] 0903[农学-农业资源与环境] 

基　　金：National Science Fund for Distinguished Young Scholars, 40025105 National Natural Science Foundation of China, No. 40331012 NSF Project, No.EAR 0402509 No.BCS 00-78557 Doctoral Fund from Southwest University, No. 104220-20710904 CSTC, No.2009BB7112 

主　　题：Chinese Loess Plateau arid and semi-arid region pollen assemblage climate change 

摘      要：Pollen records from the Chinese Loess Plateau revealed a detailed history of vegetation variation and associated climate changes during the last 13.0 ka BP. Before 12.1 ka BP, steppe or desert-steppe vegetation dominated landscape then was replaced by a coniferous forest under a generally wet climate （12.1-11.0 ka BP）. The vegetation was deteriorated into steppe landscape and further into a desert-steppe landscape between 11.0 and 9.8 ka BP. After a brief episode of a cool and wet climate （9.8-9.6 ka BP）, a relatively mild and dry condition prevailed during the early Holocene （9.6-7.6 ka BP）. The most favourable climate of warm and humid period occurred during mid-Holocene （7.6-4.0 ka BP） marked by forest-steppe landscape and vegetation alternatively changed between steppe and desert-steppe from -4.0 to -1.0 ka BP.