RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2006, Vol. 15 >> Issue (Sup1): 51-56.

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QUANTITATIVE RESEARCH ON WETLAND LAKESIDE FUNCTION OF JIANHU LAKE

XU Shouguo1| GUO Huijun2| TIAN un1| LU ei1| ZHANG un1   

  • Received:1900-01-01 Revised:1900-01-01 Online:2006-12-20

Abstract:

Wetland lakeside function of Jianhu Lake is qualitatively studied by indexes of water quality and sediment,through field samples and data analysis. It is showed that wetland lakeside plays an important role in water quality purification and intercepting sediment,among which the average evisceration rate of total nitrogen and total phosphorus are 66.28% and 45.73% respectively. Results of interception are as followings: （1） the thickness of mud in upstream face is 1.5 times than that in downstream face;（2） except for pH,all indexes of mud in downstream face are more than that in upstream face,among which the available phosphorus and the total nitrogen in downstream face are 3.30 and 2.6 times than that in upstream face respectively,where vegetation absorbs much mineral nutrition and their remains are accumulated. It could be concluded that lakeside has absorption and purification functions. Therefore it is necessary to protect lakeside so as to effectively exert their functions.

Key words: plateau wetland, water quality and sediment, quantitative research, lakeside, function

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