摘要
以2013~2018年全国77个监测断面的水质数据为基础,从溶解氧、高锰酸盐指数和氨氮3方面分析监测断面水质变化情况,利用水质综合指数法得出监测断面评价结果,再以不同权重计算各省份水质综合指数,对比各省份在该时段内水质变化情况。结果显示,2018年相比2016年溶解氧提高了5%,高锰酸盐指数下降了8%,氨氮下降了18%,Ⅰ~Ⅲ类水质监测断面占比上升14%达到89%,全国水质出现明显改善趋势,河长制的推行是其重要影响因素。各省份水质评价结果显示水治理效果存在地域性差异,水质较差的省份主要超标指标为氨氮。
Based on the water quality data of 77 monitoring sections in China from 2013 to 2018,the water quality changes of monitoring sections were analyzed from three aspects of dissolved oxygen,permanganate index and ammonia nitrogen.The water quality index method was used to get the evaluation results of monitoring sections,and the water quality index of each province was calculated with different weights to compare the water quality changes of each province in this period.The evaluation results of monitoring sections show that compared with 2016,the dissolved oxygen in 2018 increase by 5%,the permanganate index decrease by 8%,the ammonia nitrogen decrease by 18%,and the proportion of classⅠ~Ⅲwater quality monitoring sections increase by 14%to 89%.The water quality in China shows an obvious improvement trend,and the implementation of river chief system is an important factor.The results of water quality evaluation shows that there are regional differences in water treatment effect,and the main index exceeding the standard in poor water quality provinces is ammonia nitrogen.
作者
苗得雨
衣鹏
MIAO De-yu;YI Peng(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,China)
出处
《水电能源科学》
北大核心
2021年第12期62-64,16,共4页
Water Resources and Power
基金
水文水资源与水利工程科学国家重点实验室“一带一路”水与可持续发展科技基金(2019491111)。
关键词
水质评价
水质指数法
河长制
氨氮
water quality evaluation
water quality index
river chief system
ammonia nitrogen
作者简介
苗得雨(1996-),男,硕士研究生,研究方向为城市水环境,E-mail:miaodeyu1996@163.com;通讯作者:衣鹏(1985-),男,博士研究生、教授、博导,研究方向为水文水资源,E-mail:pengyi1915@163.com。
