青弋江芜湖段春季可溶性无机氮分布特征

通过调查青弋江芜湖段9个断面的水质状况,研究该段水体中可溶性无机氮的空间变化规律。结果表明,青弋江芜湖段水体中氨氮浓度从上游至下游呈增加趋势,硝态氮浓度为2007年的2~3倍,氨氮浓度与2007年相比无明显差异;氨氮浓度与硝态氮浓度呈负相关,氨氮和硝态氮浓度与DO浓度有较强的相关性;青弋江芜湖段水体中pH变化受到沿岸环境影响较大。该研究可为有关部门保护青弋江水环境提供参考。

The Distributive Character of Dissolved Inorganic Nitrogen in Wuhu Section of Qingyi River in Spring

Through investigation on water quality status in Wuhu section of Qingyi River,the spatial variation law of dissoluble inorganic nitrogen was studied.The results showed that the ammonia concentration in water has increasing trend from upstream to downstream.Nitrate concentration was 2 to 3 times in 2007,and no significant difference in the concentration of ammonia ; The anmonia concentration and nitrate concentrations in water were negatively correlated in Wuhu section of Qingyi River; The concentrations of ammonia and nitrate have a strong correlation with DO ; The changes of pH influenced obviously by the coastal environment in Wuhu section of Qingyi River.The study can provide reference for protecting water environment of Qingyi River by relevant departments.