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Sedimentary evidence for changes in the pollution status of Taihu in the Jiangsu region of eastern China |
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| Authors: | NL Rose JF Boyle Y Du C Yi X Dai PG Appleby H Bennion S Cai L Yu |
| Institution: | 1. Environmental Change Research Centre, University College London, 26 Bedford Way, London, WC1H 0AP, UK 2. Department of Geography, University of Liverpool, P.O. Box 147, Liverpool, L69 3BX, UK 4. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, 54 Xu Dong Road, Wuchang, 430077, Hubei, People's Republic of China 5. Department of Geography, East China Normal University, Shanghai, 200062, People's Republic of China 3. Environmental Radioactivity Research Centre, Department of Mathematical Sciences, University of Liverpool, P.O. Box 147, Liverpool, L69 3BX, UK |
| Abstract: | As part of a study using lake sediments to determine the extent and causes of human impacts to lakes along an east–west transect following the Yangtse River, sediment cores were taken from Taihu in eastern China. Previous studies have focussed on the impacts of direct inputs of pollutants from municipal and industrial wastewater but little work has been undertaken on trends in atmospheric deposition from the many industrial sources surrounding the lake. Analysis of the Taihu sediment cores for atmospheric pollutant indicators such as trace metals, magnetic parameters and spheroidal carbonaceous particles (SCPs) show the lake has become increasingly contaminated over the last 40–50 years. Sediment levels of atmospherically deposited pollutants are currently similar to some of the more contaminated lakes in Europe. Further, sediment nitrogen, phosphorus and geochemical analyses confirm the dramatic increase in eutrophication at the site and periods of recent soil erosion in the catchment. |
| Keywords: | Atmospheric deposition Fly-ash particles Industrial pollutants Magnetic susceptibility Trace metals |
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