doi:10.12202/j.0476-0301.2020070郑能展^{1, 2},
岳卫峰^{1, 2,,},
郭梦申^{1, 2},
滕彦国^{1, 2}
1.北京师范大学水科学研究院，北京 100875
2.地下水污染控制与修复教育部工程研究中心，北京 100875
基金项目:国家自然科学基金资助项目（51879011）；国家重点研发计划资助项目（2016YFC0401303）

详细信息

通讯作者:岳卫峰(1978—)，男，副教授，博士。研究方向：干旱区水资源与水环境。e-mail：yuewf@bnu.edu.cn

中图分类号:S271

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出版历程

收稿日期:2019-12-03
网络出版日期:2020-07-29
刊出日期:2020-04-01

Impact of irrigation on regional groundwater quality in arid area - an multiple water quality assessment

Nengzhan ZHENG^{1, 2},
Weifeng YUE^{1, 2,,},
Mengshen GUO^{1, 2},
Yanguo TENG^{1, 2}
1. College of Water Sciences, Beijing Normal University, 100875，Beijing , China
2. Engineering Research Center of Groundwater Pollution Control and Remediation of Ministry of Education, Beijing Normal University, 100875，Beijing , China



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摘要
摘要:通过分析河套灌区义长灌域内32口地下水监测井水质数据，依据地下水质量标准(GB/T 14848—2017)，采用内梅罗指数法、改进内梅罗指数法、模糊数学综合评判法和单因子评价法等多重水质评价方法，对灌溉前后区域地下水水质进行了评价，并对比和评估了不同地下水水质评价方法的有效性. 评价结果显示，采用模糊数学综合评判法评价时，灌溉前地下水各水质所占比例分别为V类（81.25%）、IV类（6.25%）、III类（9.38%）、II类（3.12%），灌溉后为V（84.38%）、IV（6.25%）、III（9.38%）. 这一结果与单因子评价法的评价结果最为接近，契合度高达85.9%，具有显著的合理性. 在此基础上，通过灌溉前后水质变化因素分析，发现引起水质恶化的指标主要为氯化物、氨氮、硫酸盐和总溶解固体等. 评价结果可为灌区地下水环境保护和可持续开发利用提供一定的参考.
关键词:义长灌域/
地下水水质评价/
内梅罗指数法/
模糊数学综合评判法
Abstract:Observed data at 32 monitoring wells in Yichang Irrigation Sub-district of Hetao Irrigation District and Groundwater Quality Standards (GB/T 14848—2017) were used to evaluate regional groundwater quality before and after irrigation with multiple water quality assessment methods including Nemerow Index, improved-Nemerow Index, fuzzy comprehensive evaluation method and Single-factor assessment. Effectiveness of different comprehensive assessment methods was evaluated. Fuzzy comprehensive evaluation was found to be more effective and more objective, consistency between this evaluation method and Single-factor method was 85.9%, fuzzy comprehensive evaluation can therefore be used to evaluate regional groundwater quality, particularly in arid areas. Fuzzy comprehensive evaluation classified the groundwater quality in five grades. The percent before irrigation was V 81.25%, IV 6.25%, III 9.38%, II 3.12%; after irrigation V 84.38%, IV 6.25%, III 9.38%. Analysis of groundwater quality indicators before and after irrigation identified predominant impacting factors: chloride, ammonia nitrogen, sulfate and total dissolved solids (TDS). These findings will be useful for the protection and sustainable utilization of regional groundwater in Hetao Irrigation District.
Key words:Yichang Irrigation Sub-district/
groundwater quality evaluation/
Nemerow Index/
fuzzy comprehensive evaluation method