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艾比湖地区冰消期以来气候演化的植物学证据
引用本文:李国胜.艾比湖地区冰消期以来气候演化的植物学证据[J].海洋地质与第四纪地质,1996,16(2):93-102.
作者姓名:李国胜
作者单位:中国科学院资源与环境信息系统国家重点实验室
摘    要:本文根据植物生态学分析方法,通过对艾比湖ZKooB孔中孢粉组合及植被生态的定量分析,阐述了北疆内陆干旱区冰消期以来的气候演化状况。孢粉组合特征及其植被生态的定量分析研究表明,受大气降水以及大气和土壤中相对湿度波动变化的影响,艾比湖地区的生态环境特征在最近15000a中至少经历了10次比较明显的波动变化,并且与全球气候变化过程基本符合,表明中国西部干旱半干旱地区晚更新世以的气候环境演化过程是在全球变

关 键 词:艾比湖  冰消期  气候演化  植物学  晚更新世

BOTANICEVIDENCESFOR CLIMATIC CHANGES INTHE AIBI LAKE AREA SINCE THE LAST DEGLACIATION
Li Guosheng.BOTANICEVIDENCESFOR CLIMATIC CHANGES INTHE AIBI LAKE AREA SINCE THE LAST DEGLACIATION[J].Marine Geology & Quaternary Geology,1996,16(2):93-102.
Authors:Li Guosheng
Abstract:AibiLake,the second largest saline lake in the north Xinjiang,has experienced ma-jor environmental. changes since the last deglaciation,Sediment samples from CoreZKooB give the record of past climatic and vegetation conditions in Aibi Lake area. 29samples were analyzed for pollen data,The results of pollen statistics suggest that thereare at least 10 distinct fluctuations in ecological and environmental features in the areasince 15ka B,Pwhich are controlled by precipitation and the effective moisture in atmosphere and soil and coincide with the global climatic processes. Therefore,it can be concluded that climatic and environmental changes in arid and semi-arid areas of the northwest China since the Late Pleistocene are developed under background of global change.Climatic and environmental changes reflected by the pollen assemblages are totally inkeeping with the fluctuations of effective moisture in atmosphere or soil represented bythe Artemisia / Chenopodiaceae ratio in the area since the last deglaciation,which showsthat precipitation or the effective moisture in atmosphere and soil is an important factorfor controlling climatic and environmental processes in arid and semiarid areas of thenorth Xinjiang since the Late Quaternary.
Keywords:Aibi Lake the last deglaciation pollen assemblage cli-matic change
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