文献类型：期刊文献

中文题名：衡水湖湿地水环境质量时空变化特征及污染源分析

英文题名：Spatial-Temporal Variation of Water Environment Quality and Pollution Source Analysis in Hengshui Lake

作者：刘魏魏[1,2] 郭子良[1,2] 王大安[1,2] 张曼胤[1,2] 张余广[2,3]

第一作者：刘魏魏

通信作者：Zhang, Man-Yin

机构：[1]中国林业科学研究院湿地研究所,湿地生态功能与恢复北京市重点实验室,北京100091;[2]河北衡水湖湿地生态系统定位观测研究站,衡水053000;[3]河北衡水湖国家级自然保护区管理委员会,衡水053000

年份：2021

卷号：42

期号：3

起止页码：1361-1371

中文期刊名：环境科学

外文期刊名：Environmental Science

收录：CSTPCD;;EI(收录号：20210910003374);Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；PubMed;

基金：国家自然科学基金项目(31700409);中国林业科学研究院基本科研业务费专项(CAFYBB2019MA010)。

语种：中文

中文关键词：衡水湖;水环境质量;水质状况;营养水平;时空变化

外文关键词：Hengshui Lake;water environment quality;water quality;trophic level;spatial-temporal variation

分类号：X524

摘要：为了评价衡水湖湿地水环境质量时空变化趋势,并对污染源进行分析.本文依据衡水湖历史水体监测点数据和2019年布设的17个采样点数据,利用综合营养状态指数、水质综合状况指数和水环境质量指数评价方法,研究了2000~2019年衡水湖水体营养状态、水质状况和水环境质量时空变化特征,分析了可能的污染物来源.结果表明,2000~2019年,衡水湖水体达到Ⅲ类水质的监测点比例不断升高,高锰酸盐指数、总氮和总磷超标是衡水湖存在的主要水环境问题.从空间上来看,衡水湖水体综合营养状态、水质状况和水环境质量3种指数整体上呈现从南部到中西部再到东北部降低的趋势.衡水湖国家级自然保护区建立后,一系列水体保护政策和措施的实施,使2000~2019年3种指数分别降低了20.9%、53.4%和49.2%,显著改善了衡水湖水环境质量.但是污水的侧渗与下泄、引水农业面源污染物的汇入,以及湖内植物枯落腐烂等也给衡水湖水环境质量带来很大的挑战.
To study the spatial-temporal variation of water environment quality in Hengshui Lake and determine the associated pollution sources,we used historical water monitoring data(from 2000 onwards) and data from 17 sites sampled in 2019 to determine the trophic level index(TLI),comprehensive water quality index(WQI),and water environment quality index(EQI).The results showed that the proportion of monitoring points reaching level Ⅲ increased from 2000 to 2019.The permanganate index,total nitrogen,and total phosphorus were the main water environmental indicators.Spatially,TLI,WQI,and EQI all generally decreased from the south to the middle and west of the lake,and then further decreased towards the northeast.After the establishment of the Hengshui Lake National Nature Reserve,a series of water body protection policies and measures were implemented.These interventions are reflected in reductions in the TLI,WQI,and EQI between 2000 and 2019 by 20.9%,53.4%,and 49.2%,respectively.However,side seepage and sewage discharge,agricultural non-point source pollutants transported by water diversion,and the decay of plants in the lake present significant challenges for water quality in Hengshui Lake.