摘要
为探讨人类活动对周边水体的影响,对灞陵河的许昌区段进行水样采集,分析25个采样点样品中TN(总氮)、总磷(总磷)、SD(透明度)、COD_(Mn)(高锰酸盐指数)、a(Chl-a)(叶绿素)五项指标.与《地表水环境质量标准》进行比较,结果发现TN污染级别处于Ⅲ~劣Ⅴ类,TP污染级别处于Ⅰ~Ⅲ类,COD _(Mn)污染级别处于Ⅱ~Ⅲ类,河段水体发综合营养状态指数均值是44.05.表明灞陵河许昌市区段处于中营养状态,河流中下游比上游污染严重.
In order to explore the impact of human activities on the surrounding water quality,water samples were collected from Xuchang urban section of Baling River,and five indexes of TN(total nitrogen),TP(total phosphorus),SD(transparency),COD_( Mn)(permanganate index)and a(Chl-a)(chlorophyll)were analyzed in 25 sampling points.Comparing the test results with the environmental quality standard for surface water(GB3838—2002),the results were found that the TN pollution level was between class Ⅲ and inferior class V;TP pollution level was between class Ⅰ and Ⅲ;the pollution level of COD_(Mn )was between class Ⅱ and class Ⅲ.The average value of the comprehensive trophic state index of the water body in the study section was 44.05,indicating that the Xuchang urban section of the Baling River was in a mesotrophic state,and the pollution in the middle and lower reaches of the river is more serious than that in the upper reaches.
作者
徐永新
张瑞
XU Yongxin;ZHANG Rui(School of Urban Planning and Landscape Architecture,Xuchang University,Xuchang 461000,China)
出处
《许昌学院学报》
CAS
2022年第5期28-32,共5页
Journal of Xuchang University
基金
国家自然基金项目(42173062)。
关键词
富营养化
主成分分析
灞陵河
eutrophication
principal component analysis
Baling river
