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《Environmental Science and Management》 2012-04
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Estimation on Pollution Load of Added Non-point Source Pollution from Paddy Fields in Western Jilin Province

Wang Yuan1,Zhang Gang2,Zhu Xianmei1,Wang Ning2,Zhao Kun2(1.Research Academy of Environmental Sciences of Jilin Province,Changchun 130021,China; 2.Northeast Normal University,Changchun 130024,China)  
Against the background of land arrangements and diversion projects,an area of 1.53×105ha farmland have been explored in the west of Jilin Province,which has brought non-point source pollutions consisting of T-N,T-P and total salts.Model USLE and CREAMS,with monitoring on the typical testing farmland have been used to estimate the added load of non-point pollutants T-N,T-P and total salts yearly from the saline and alkali land exploited to farmland in the west of Jilin Province.The results show that T-N 4 029.561t/a(26.337kg/ha),T-P 1 407.982 5t/a(9.242 5kg/ha)and total salts 851 537.871t/a(5 565.607kg/ha)have been discharged in the drainage.Based on the analysis of the driven forces,the runoff of rainfall and the drainage of farmlands are the two major factors impacting the T-P and total salts output respectively and both of them have effects on the load of T-N.
【Fund】: 国家自然科学基金项目(No.40673059);; 吉林省财政厅项目“吉林省增产百亿斤商品粮能力建设中西部新增水田农业非点源污染特点及防治技术研究”(2009)
【CateGory Index】: X522
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