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A late Holocene record of land-use history, soil erosion, lake trophy and lake-level fluctuations at Bjaresjosjon (South Sweden)

作者：M.-J. Gaillard,J. A. Dearing,F. E1-Daoushy,M.Enell & H. Hakansson   出版商：Journal of Paleolimnology   出版日期：1991 年 1 月
Land-use history, soil ersosion, lake trophy and lake-level fluctuations during the last 3000 years were reconstructed through a multidisciplinary palaeolimnological study (pollen, plant macrofossils, diatoms,physical and chemical analysis, magnetic measurements and radiometric methods) of a small eutrophic lake in southern Sweden (Bj~resjOsjOn, Scania). There are striking responses in diatom, chemical,sediment yield and magnetic records to land-use changes documented by pollen analysis or historical sources, and to lake-level changes identified from sedimentary changes. Our multidisciplinary approach assists interpretation of the processes controlling long-term changes and separation of the effects of different factors (land-use changes, lake-level fluctuations) on individual biostratigraphical records. Climate has controlled processes in the lakeindirectly,through lake-level fluctuations, from the LateBronze Age to the Viking Age (700 BC-AD 800). Since the Viking Age, land-use controlled most of the changes observed in the lake's development and soil erosion processes. Major changes in lake devel-opment occurred during the last 200 years, due to a drastic increase in soil erosion and water eutroph-ication during a period of agricultural modernization.
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