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

XIE Ying-Xin; XIONG Zheng-Qin; XING Guang-Xi; SUN Guo-Qing; ZHU Zhao-Liang

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

机译：太湖地区地表水氮污染源评价。

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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 15 N-labeled fertilizer,field experiments were carried out in this region to determine variations of 15Nabundance of NO-3 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.

机译：研究了太湖地区常熟的12条最重要河流的氮（N）污染状况，借助全球定位系统（GPS）收集了0.5-1.0 m深度的水样。使用无张力整体式溶渗仪和15种N标记肥料，在该地区进行了田间试验，以确定水稻和小麦生长过程中渗滤液中NO-3的15含量变化结果表明，太湖地区地表水氮污染的主要来源不是农田施用的氮肥，而是未经处理直接排入水体的城市生活污水和农村人畜粪便。大气干湿N沉降是地表水N污染物的另一个明显来源。总之，将N归因于农田是不正确的。作为该地区地表水氮污染的来源。

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《土壤圈（英文版）》 |2007年第2期|200-208|共9页
作者
XIE Ying-Xin; XIONG Zheng-Qin; XING Guang-Xi; SUN Guo-Qing; ZHU Zhao-Liang;
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作者单位

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);

National Engineering Research Center for Wheat, Henan Agricultural University, Zhengzhou 450002 (China);

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);

Department of Physics, Portland State UniversityPortland, Oregon 97207USA;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
atmospheric dry and wet N deposition; 15 N-labeled fertilizer; N pollution sources in surface waters; N runoff from the farmland; Taihu Lake region;

机译：大气干湿氮沉降;15种氮素标记肥料;地表水氮污染源;农田氮素径流;太湖地区;

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

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