%0 Journal Article
%T Spatio-temporal analysis of nitrogen and phosphorus in farmland water environments of Taihu Lake region<br>太湖地区农田水环境中氮和磷时空变异的研究
%A WO Fei
%A CHEN Xiao-Min
%A WU Hua-Shan
%A CHEN Li
%A <br>沃 飞
%A 陈效民
%A 吴华山
%A 陈 力
%J 中国生态农业学报
%D 2007
%I 
%X This paper analyzed changes in concentrations of nitrogen and phosphorus in farmland water environments in the Taihu Lake region over typical farming months of March,May and July.Results show high nitrogen and phosphorus pollution in the entire farmland water environment.A worsening trend is observed for the period of March to July.Nitrogen and phosphorus contents in surface water,especially in Taihu Lake,far exceed national eutrophication limits,with an acute pollution degree.Total-phosphorus(TP) and nitrate nitrogen(NO-3-N) contents in well waters show obvious increase.As for ammonium nitrogen(NH 4-N),it simply exceeds national type V standard of groundwater quality,very unfit for drinking.A negative linear correlation exists between NH 4N and clay content in shallow groundwater,and a positive linear correlation between NO-3-N and pH in deep groundwater.The results provide scientific-based decision-making tool for environmental protection and melioration drive of non-point source pollution in Taihu Lake region.
%K Taihu Lake region
%K Nitrogen
%K Phosphorus
%K Groundwater
%K Farmland water environment
%K Spatial-temporal variance<br>太湖地区
%K 氮
%K 磷
%K 地下水
%K 农田水环境
%K 时空变异
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=7C80D7AE7E4BFDB8639F79D0C07F1ADE&yid=A732AF04DDA03BB3&vid=23CCDDCD68FFCC2F&iid=B31275AF3241DB2D&sid=340AC2BF8E7AB4FD&eid=339D79302DF62549&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=19