The lacustrine sedimentary records of coal-burning atmospheric pollution

Based on the studies on diatom, ostracods and magnetism on a core acquired from lacustrine sediments, as well as correlation analysis between concentration of acid diatom and the instantaneous lowest pH value, the processes of environment evolution in Lake Yangzonghai were reconstructed. The lacustrine environment was favorable in the 1950s, and began to be polluted by a coal-burning power plant since 1960. During 1965-1980, the instantaneous lowest pH value of lake water decreased to 5-6 when heavily polluted. There was a decrease trend in the pollution from 1983 to 1999, but coal-burning atmospheric pollution was still a main problem for environmental retrieving. As acid precipitated, acid-tolerant species overspread, and shellfish disappeared, as well as ferromagnetic particulates dissolved because of the consequent change of pH-Eh values in the interface of water and soil, which results in the change of environmental proxies versus depth. Thus, the environmental evolution of Lake Yangzonghai is reconstructed in this paper based on the inferences mentioned above.

作 者： WANG Yunfei HU Shouyun ZHU Yuxin YIN Yu ZHOU Wangping E. Appel V. Hoffmann   作者單位： WANG Yunfei,ZHU Yuxin,YIN Yu,ZHOU Wangping(Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China)

HU Shouyun(Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China;Department of Geography, Shanghai Normal University, Shanghai 200234, China)

E. Appel,V. Hoffmann(Institut für Geowissenschaften, Universit(a)t Tübingen, 72076 Tübingen, Germany) 

刊 名： 中國科學D輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES D (EARTH SCIENCES)  年，卷(期)： 2005 48(10)  分類號： P3  關鍵詞： atmospheric pollution   proxies   environmental reconstruction   lacustrine sediment   Lake Yangzonghai  

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