基于WASP模型的农田退水对查干湖水质影响的评价  

Evaluation on impact of farmland withdrawal water on water quality of Chagan Lake based on WASP model

作　　者：孙立鑫 林山杉[1] SUN Lixin;LIN Shanshan(College of Environmental Science,Northeast Normal University,Changchun 130024,China)

机构地区：[1]东北师范大学环境学院,吉林长春130024

出　　处：《水资源保护》2018年第6期88-94,共7页Water Resources Protection

基　　金：国家自然科学基金(41772236)

摘　　要：每年5—9月都有大量农田灌溉水泄入查干湖,为评价农田退水对查干湖水质造成的影响,以查干湖水质监测数据为基础,选用WASP模型的EUTRO模块,对农田退水退入查干湖后的水质情况进行分析。结果表明:农田退水期间,受霍林河来水影响的区域水质劣于查干湖水质平均水平,前郭灌区农田退水直接扰动区及新庙泡水质劣于主湖区、马营泡水质,说明农田退水已经对查干湖水质产生负面影响;预计2017—2019年,查干湖TN、TP、NH_3-N、DO质量浓度分别符合Ⅴ类、Ⅳ类、Ⅱ类和Ⅰ类水质标准。From May to September each year, a large amount of farmland irrigation water is discharged into Chagan Lake. In order to evaluate the impact of farmland withdrawal water on the water quality of Chagan Lake, based on the water quality monitoring data of Chagan Lake, the EUTRO module of WASP model is selected to analyze the water quality of Chagan Lake from farmland irrigation water. The results showed that during the period of water withdrawing from the farmland, the water quality of the region affected by the water of Huolin River is worse than the average level of Chagan Lake water quality, and the water quality of the direct farmland withdrawal water affected area of Qianguo irrigation area and Xinmiaopao is worse than that of the main lake region and Mayingpao, showing that farmland withdrawal water has negative effect on the water quality of Chagan Lake. The author of this paper thinks that TN of Chagan Lake is in the Ⅴ-level water quality standard, while TP in Ⅳ-level, NH3-N in Ⅱ-level, and DO in Ⅰ-level from 2017 to 2019.

关 键 词：农田退水 水质评价 WASP模型 查干湖 

分 类 号：X824[环境科学与工程—环境工程]