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《Journal of Arid Land Resources and Environment》 2011-08
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Temporal and spatial variation of "three nitrogen" on shallow groundwater in Guanzhong Basin and its control measures

DUAN Lei,WANG Wenke,YANG Xiaoting,JIANG Guihua(School of Environmental Science and Engineering,Chang'an University,Xi'an 710054,P.R.China)  
In order to investigate the temporal and spatial variation of "three nitrogen" on shallow groundwater in Guanzhong Basin,232 water samples were obtained and determined.Based on the method of one-factor pollution index,the pollution degree was analysized.The results showed that the nitrate content was significantly higher than the content of ammonium nitrogen and nitrite.The nitrogen presented the face-shaped pollution form in shallow groundwater,and the ammonium nitrogen and nitrite present point pollution form.The nitrogen pollution in north region of Weihe river was higher than nitrogen pollution in south region of Weihe river.The Qishui river-Luo river in north of Weihe river、loess plateau of Xi'an city、Huxian County-Chang'an and Huaxian County in south of Weihe river、flood plain and low bench in middle and up reach of Weihe river were the serious pollution regions.The nitrogen pollution of agricultural region in superficial groundwater was increasing remarkably in recent 20 years,but the nitrogen pollution was decreasing fluctuately in suburban superficial groundwater.At the same time,we put forward control measures on "three nitrogen" pollution of shallow groundwater according to different areas.
【Fund】: 国家自然科学基金(40872163);; 国家重大水专项(2009ZX07012-002)资助
【CateGory Index】: X523
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