Assessment of Nitrogen Pollutant Sources in Surface Waters of Taihu Lake Region

查看全文 作　　者：XIE Ying-[1,2]Xin;XIONG Zheng-[1,3]Qin;XING Guang-[1]Xi;SUN Guo-[1]Qing;ZHU Zhao-[1]Liang

机构地区：[1]State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);[2]National Engineering Research Center for Wheat, Henan Agricultural University, Zhengzhou 450002 (China);[3]Department of Physics, Portland State University, Portland, Oregon 97207 (USA)

出　　处：《Pedosphere》索引2007年第17卷第2期,共9页

基　　金：Project supported by the State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences (No. 035109);the National Natural Science Foundation of China (No. 30390080). 摘　　要：The nitrogen (N) pollution status of the 12 most important rivers in Changshu, Taihu Lake region was investigated. Water samples were collected from depths of 0.5-1.0 m with the aid of the global positioning system (GPS). The seasonal variations in the concentrations of different N components in the rivers were measured. Using tension-free monolith lysimeters and 15N-labeled fertilizer, field experiments were carried out in this region to determine variations of 15N abundance of NO3- in the leachate during the rice and wheat growing seasons, respectively. Results showed that the main source of N pollution of surface waters in the Taihu Lake region was not the N fertilizer applied in the farmland but the urban domestic sewage and rural human and animal excreta directly discharged into the water bodies without treatment. Atmospheric dry and wet N deposition was another evident source of N pollutant of the surface waters. In conclusion, it would not be correct to attribute the N applied to farmlands as the source of N pollution of the surface waters in this region. 关键词：太湖表层水污染氮污染污染源

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Assessment of Nitrogen Pollutant Sources in Surface Waters of Taihu Lake Region

参考文献(31)

引证文献(52)

耦合文献(1098)

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