Journal of Resources and Ecology ›› 2011, Vol. 2 ›› Issue (2): 175-180.DOI: 10.3969/j.issn.1674-764x.2011.02.011

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Causes of Lake Area Changes in Poland

Adam CHOINSKI1, Agnieszka LAWNICZAK2, Mariusz PTAK3, Leszek SOBKOWIAK1   

  1. 1 Institute of Physical Geography and Environmental Planning, Adam Mickiewicz University, 61-680 Poznań, Poland;
    2 Chair of Ecology and Agricultural Environment Protection, Poznań University of Life Sciences, 60-649 Poznań, Poland;
    3 University Library, Adam Mickiewicz University, 61-816 Poznań, Poland
  • Received:2010-05-11 Revised:2011-01-14 Online:2011-06-30 Published:2011-06-28

Abstract: The northern part of Poland is occupied by numerous lakes formed during the last glaciation as a result of the Scandinavian ice sheet. Studies carried out in the lake district areas show progressive reduction of the surface area of the lakes, which leads to their eventual disappearance. The paper discusses the degree of the observed changes and points out main natural and anthropogenic factors influencing changes of lake area in Poland, including climate change, depth of lake basins, biomass growth, deforestation, hydrotechnical works, use of fertilizers and discharge of wastewater.

Key words: Northern Poland, lake districts, lake area changes, natural factors, anthropogenic factors