| The lacustrine sedimentary records of coal-burning atmospheric pollution |
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| 作者姓名： | E. Appel V. Hoffmann |
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| 作者单位： | Institut für Geowissenschaften，Universitt Tübingen，72076 Tübingen，Germany，Institut für Geowissenschaften，Universitt Tübingen，72076 Tübingen，Germany |
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| 摘 要： | With the acceleration of industrialization, coal- burning atmospheric pollution is getting more and more serious in many regions in China. However, there are only about ten odd years literature records about pollution in some large and mid-sized cities, where the atmosphere has perhaps been polluted for several decades, and therefore it is difficult to know the process and characteristic of pollution, and diffi-cult to evaluate its damage to environment. Lacustrine sediment, a natural record w…
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The lacustrine sedimentary records of coal-burning atmospheric pollution |
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| E. Appel,V. Hoffmann.The lacustrine sedimentary records of coal-burning atmospheric pollution[J].Science in China(Earth Sciences),2005,48(10). |
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| Authors: | WANG Yunfei HU Shouyun ZHU Yuxin YIN Yu ZHOU Wangping E Appel V Hoffmann |
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| Abstract: | 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. |
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| Keywords: | atmospheric pollution proxies environmental reconstruction lacustrine sediment Lake Yangzonghai |
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