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《Journal of Soil Water Conservation》 2004-01
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Experimental Study on Contaminant Release of Flooded Soils in Three Gorges Reservoir

YANG Gang (College of Resource & Environment Science, Chongqing University, Chongqing 400044)  
After the Three Gorges reservoir builded up, flooding the cultivated soils will soak by the river. Savings organic pollutions at cultivated soils, N, P, Cu, Cr, etc. micro-heavy metal will move to the river through dissolution, exchange and spread, it will increase content of corresponding composition in rivers. In this paper, on the basis of investigating the quantity and type of cultivated soils in the Three Gorges reservoir, the author has chose and gathered 8 pieces of cultivation soils with representative, made samples and imitated rivers to soak in experiment. The author has calculated the contaminant release of flooded soils under solid-liquid phase balanced stateless by the soils of weight, and calculated pollutant release and enter the quantities of flooded soils when it balance in the Three Gorges reservoir. The result shows that the contaminantrelease of flooded soils is 181 540.9 t, rely mainly on COD(cr), BOD5, the two total 93.78%, this will become the important pollution sources of water environmental in the Three Gorges reservoir.
【Fund】: 重庆市科委科技攻关项目"三峡库区次级河流富营养化防治研究"子课题(编号:6756)
【CateGory Index】: X52
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