학술논문
基于改进方法的承德地表水环境质量评价 / Evaluation of the environmental quality of surface water in Chengde using improved methods
Document Type
Academic Journal
Author
张胜; 张涛; 段雯瑜; 徐利; 顾金洋; 张炜; 李思敏; ZHANG Sheng; ZHANG Tao; DUAN Wenyu; XU Li; Gu Jinyang; ZHANG Wei; LI Simin
Source
干旱区研究 / Arid Zone Research. 41(1):50-59
Subject
Language
Chinese
ISSN
1001-4675
Abstract
为客观反映地表水水质状况,采用层次分析法和熵权法组合赋权以及加权平均综合评价原则改进模糊综合评价法,并与单因子评价法、内梅罗指数法、传统模糊综合评价法进行比较,评价承德地区地表水环境质量.结果表明:2021年承德地区地表水水质有明显的时空差异性,除7-9月的部分断面水质为较差外,其余断面水质均在Ⅰ～Ⅲ类;影响承德地区地表水水质的主要因子为CODMn和TP;单因子评价法和内梅罗指数法无法反映整体水质状况,改进的模糊综合评价法相较于传统模糊综合评价法兼顾了各污染因子间相互作用,并弱化了个别水质指标对评价结果的影响,且能够对同一类别水质进行排序,更适用于承德地区地表水环境质量评价.
To objectively reflect the surface water quality status,a combination of the Analytic Hierarchy Process Entropy Weight Method and the weighted average comprehensive evaluation principle were used to improve the fuzzy comprehensive evaluation method.The method was compared with the single factor evaluation,Nemero index,and traditional undefined extensive evaluation methods to evaluate the surface water environmental quality in the Chengde area in 2021.The results showed a significant spatiotemporal difference in the surface water quality.Except for some sections with poor water quality from July to September,the water quality in other sections was in Classes Ⅰ-Ⅲ;The main factors affecting surface water quality in the Chengde area were CODMn and TP;The single factor evaluation and the Nemero index methods could not reflect the overall water quality.Compared to the traditional fuzzy comprehensive evaluation method,the improved fuzzy comprehensive evaluation method considers the interaction between various pollution factors and weakened the impact of individual water quality indicators on the evaluation results.It can also rank the category of water quality,making it more suitable for evaluating the environmental quality of surface water in the Chengde area.
To objectively reflect the surface water quality status,a combination of the Analytic Hierarchy Process Entropy Weight Method and the weighted average comprehensive evaluation principle were used to improve the fuzzy comprehensive evaluation method.The method was compared with the single factor evaluation,Nemero index,and traditional undefined extensive evaluation methods to evaluate the surface water environmental quality in the Chengde area in 2021.The results showed a significant spatiotemporal difference in the surface water quality.Except for some sections with poor water quality from July to September,the water quality in other sections was in Classes Ⅰ-Ⅲ;The main factors affecting surface water quality in the Chengde area were CODMn and TP;The single factor evaluation and the Nemero index methods could not reflect the overall water quality.Compared to the traditional fuzzy comprehensive evaluation method,the improved fuzzy comprehensive evaluation method considers the interaction between various pollution factors and weakened the impact of individual water quality indicators on the evaluation results.It can also rank the category of water quality,making it more suitable for evaluating the environmental quality of surface water in the Chengde area.