基于奉贤区地表水水质时空变化分析的水环境评估

Spatio-temporal variation analysis of water quality based on surface water monitoring data in Fengxian District and water environment assessment in Fengxian District

以上海市奉贤区不同河流、不同断面的酸碱度、化学需氧量(COD_(Cr))、氨态氮、温度、溶解氧、高锰酸盐指数(COD_(Mn))、挥发性酚、石油产品、总磷含量、全氮以及生化需氧量(BOD_(5))等作为评价因子,评价奉贤区地表水环境质量的时空变化规律,结果表明时空变化趋势较为明显。结合监测数据对不同断面进行了健康评估,结果显示健康水平差异较大,健康水平受土壤本底、特定气象或人为因素等多重影响。

Taking pH,chemical oxygen demand(COD_(Cr)),ammonia nitrogen,temperature,dissolved oxygen,permanganate index(COD_(Mn)),volatile phenol,petroleum products,total phosphorus content,total nitrogen and biochemical oxygen demand(BOD_(5))of different rivers and sections in Fengxian District of Shanghai as evaluation factors,the temporal and spatial variation law of surface water environmental quality in Fengxian District was evaluated,and the results showed that the temporal and spatial variation trend was obvious.Combined with the monitoring data,the health assessment of different sections was carried out.The results showed that the health level was quite different,and the health level was affected by multiple factors such as soil background,specific meteorological or human factors.