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[1]SHI Wei,CHEN Fa-yang,HU Yuan-yuan,et al.Inorganic Nitrogen Characteristics in Wuhu Section of Qingyi River[J].Research of Soil and Water Conservation,2008,15(03):157-160.

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Inorganic Nitrogen Characteristics in Wuhu Section of Qingyi River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 03 Page number: 157-160 Column: Public date: 2008-06-20

Title:: Inorganic Nitrogen Characteristics in Wuhu Section of Qingyi River

Author(s):: SHI Wei^1,2, CHEN Fa-yang¹, HU Yuan-yuan¹, WEI Wei¹; 1. College of Environmental Science, An’hui Normal University, Wuhu, An’hui 241000, China;
2. Science and Research Department, Shijiazhuang University, Shijiazhuang 050035，China

Keywords:: Qingyi river; inorganic N; distributions and variations

CLC:: X524

DOI:: -

Abstract:: The distributional characteristics of inorganic nitrogen in Wuhu of Qingyi River were analyzed by field monitoring.The results showed that:(1) From upper reaches to lower reaches in the section of Qingyi River,the concentrations of NO₃-N and NH₄-N rise gradually both in low water period and high water period,presenting a transformation process from NO₂-N and NH₄-N to NO₃-N which representing the main existence form.(2) The distributions of inorganic nitrogen are higher in low water period whereas lower in high water period.It revealed that pollutants were main from point source discharge in urban area and were diluted by the help of larger flux in high water period.(3) Contents of inorganic nitrogen were negatively related with that of chlorophyll a.(4) The high content of DO in the section of Qingyi River would not be a limiting factor for nitration but a promoter for intertransform among the nitrogens.

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