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《Wetland Science》 2010-02
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The Hydrochemical Characteristic of Lakes in Songnen Plain

YAO Shu-Chun1,XUE Bin1,LU Xian-Guo2,XIAO Hai-Feng3 (1.State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,Jiangsu,P.R.China;2.Key Laboratory of Wetland Ecology and Environment of Chinese Academy of Sciences,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130012,Jilin,P.R.China;3.College of Geographic Science,Harbin Normal University,Harbin 150080,Heilongjiang,P.R.China)  
In summer of 2008,27 lakes were surveyed in Songnen Plain in Northeast China.Lake water was sampled and analyzed including basic parameters(HCO-3,CO32-,C1-,SO42-,K+,Na+,Ca2+,Mg2+),conductivity,transparency,pH etc.It was found that the majority of the water of these lakes was categorized into HCO3-Na type.pH of the water was more than 8.0 in most of these investigated lakes.And higher pH of the water was corresponding to higher salt content that showed the characteristics of salinity of the lakes.Water transparencys were generally lower and were less than 0.5 m in these lakes.In most of the lakes,the proportion of Na+ was up to 54%-98%(molar ratio) among 4 cations.Compared with the historical data,there was an alkaline trend of the water of the lakes in Songnen Plain.It was concluded that human activities such as water transfer projects had great effect on change of chemical composition of the water of 27 lakes in Songnen Plain.
【Fund】: 科技部基础性工作专项(2006FY110600)资助
【CateGory Index】: X13
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