瑞金绵江河水环境特征研究

Study on Water Environment Characteristics of Mianjiang River in Ruijin

为了了解绵江上游水域的时空变换规律与农业面源污染的关系,选用2016~2018年全年奇数月绵江河监测数据,采用单因子和综合污染指数法,对绵江河流域地表水污染时空变化特点进行分析,并结合主成分分析法探究绵江河主要污染物来源。结果表明绵江河的水质受TN、TP的影响较大,并且呈季节性变化,不存在重金属污染。在选取的2个监测点中只有瑞金新院点附近污染物超标较严重,不能达到规定的地表水Ⅱ类标准,但杨梅岗水质较好,基本可以维持规定的地表水Ⅲ类标准。

In order to understand the relationship between the law of time-space transformation of waters on the Mian River and the pollution of agricultural surface sources,this paper selected the monitoring data of the Mian Jiang River in the whole of 2016-2018,used the single-factor and comprehensive pollution index method,analyzed the spatial and temporal characteristics of surface water pollution in the Mian River basin,and explored the main pollutant sources of MianJiang River in combination with the main component analysis method. The results showed that the water quality of Mianjiang River was greatly affected by TN and TP,and seasonal changes in water quality,and there was no heavy metal pollution. In the two monitoring points selected,only vicinity of the point called Ruijinxinyuan had a severe contamination,which Failure to meet the specified type II standard for surface water. However,the water quality of the Mianjiang Bridge is good,and the prescribed surface water Type Ⅲ standard can be maintained.