摘要
以三沙源水库流域不同区段(上游、水库、波浪坝、下游)作为研究对象,选取影响水体水质的监测指标,以国家《地表水环境质量标准》作为参考依据,应用TOPSIS法综合评价不同区段水体水质情况。结果表明:三沙源水库流域不同区段水质pH均在8.0左右,呈偏弱碱性;溶解氧、亚硝酸盐指标达到I类水质的要求;总氮和氨氮的指标值均较高,超过Ⅴ类水质的要求,其中水库区段的值最高;TOPSIS法水质综合评价排序依次为三沙源水库上游>波浪坝>下游>水库。由此可知,三沙源水库流域污染物主要为含氮类物质,污染较为严重的是水库区段,是未来需要重点保护的对象。
Different sections of Sanshayuan Reservoir watershed(upstream, reservoir, wave bar and downstream) were taken as study objects. The monitoring indexes of water quality were selected. According to Environmental Quality Standards for Surface Water, TOPSIS method was adopted to evaluate water quality of water in different sections. The results showed that the water quality pH was all about 8.0, belong to weakly alkaline. The indexes of dissolved oxygen(DO) and nitrite met the standards of Class I water quality. Index values of total nitrogen and ammonia nitrogen were relatively high, exceeding the requirements of Class V water quality, and the value was the largest in the section of reservoir. The comprehensive evaluation results by the TOPSIS method were as follows: upstream > wave bar > downstream > reservoir. It can be seen that the pollutants in Sanshayuan Reservoir watershed are mainly nitrogenous substances. The section of the reservoir is polluted seriously and needs key protection.
作者
王东清
温学飞
Wang Dongqing;Wen Xuefei(Institute of Desertification Control,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002)
出处
《宁夏农林科技》
2019年第11期42-44,共3页
Journal of Ningxia Agriculture and Forestry Science and Technology
基金
宁夏回族自治区科技惠民计划项目“永宁三沙源水库生态修复与保护集成技术示范”。
