Pollen-recorded climate changes between 13.0 and 7.0 ^(14)C ka BP in southern Ningxia,China

查看全文 作　　者：SUN [1]AiZhi;[1,2]MAYuZhen;FENG [1,3]ZhaoDong;LI [1]Fei;WU [1]HuiNing

机构地区：[1]MOE Key Laboratory of Western China's Environmental Systems & College of Earth & Environment Sciences, Lanzhou University, Lanzhou 73000, China;[2]College of Resources and Technology, Beijing Normal University, Beijing 100875, China;[3]Department of Geology, Baylor University, Waco, TX 76798, USA

出　　处：《Chinese Science Bulletin》索引2007年第52卷第8期,共9页

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.40331012 and 40421101)and NSF(Grant Nos.EAR 04-02509 and BCS 06-23478) 摘　　要：A pollen record from Haiyuan section in the southern part of Ningxia revealed a detailed history of vegetation variation and associated climate changes during the period from^13.0 to^7.0 14 C ka BP.A steppe landscape under a moderately dry(and probably cool)condition(~12.7-~12.1 14 C ka BP)was replaced by a coniferous forest dominating the landscape under a generally wet climate from^12.1 to ~11.01 4C ka BP.This generally wet period,corresponding to the European B?lling/All?rod period,can be divided into three stages:a cool and wet stage between^12.1 and^11.4 14 C ka BP,a mild and rela- tively dry stage between^11.4 and^11.2 14 C ka BP,and a mild and wet stage between^11.2 and^11.0 14 C ka BP.The coniferous forest-dominated landscape was then deteriorated into steppe landscape (~11.0-~10.6 14 C ka BP)and further into a desert steppe landscape from^10.6 to^9.8 14 C ka BP,being correspondent to the European Younger Dryas period.After a brief episode of a cool and wet climate (~9.8-~9.6 14 C ka BP),a relatively mild and dry condition prevailed during the early Holocene(~9.6- ~7.6 14 C ka BP)and then a warm and humid climate started the mid-Holocene(~7.6-~7.2 14 C ka BP). 关键词：中国宁夏南部花粉记录气候变化植被历史

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Pollen-recorded climate changes between 13.0 and 7.0 ^(14)C ka BP in southern Ningxia,China

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