水利水电技术2018，Vol.49Issue(3)：111-118,8.DOI:10.13928/j.cnki.wrahe.2018.03.017
基于投影寻踪聚类模型的喀斯特地区水环境质量评价分析——以荔波县樟江为例
Projectionpursuit clustering model-based assessment on water environment quality of karst area——a case study of Zhangjiang River in Libo County
摘要
Abstract
In order to understand water environmental quality status of Karst Area,Zhangjiang River in Libo County is taken as the study case,and then the quality of the water environment of Zhangjiang River is comprehensively assessed and analyzed with Projection Pursuit Clustering (PPC) and Fuzzy Comprehensive Assessment.Through establishing projection pursuit clustering model and taking DO,potassium permanganate index,BOD5,COD,NH3-N,TN,TP indexes as the multi-dimensional projection parameters for searching the optimal projection direction,the projection value of water environmental pollution is obtained by projection objective function for reflecting the content characteristics of the water environment indexes,thus the pollution status of the water environment within the study area is acquired and compared with that from the assessment result of fuzzy comprehensive assessment method.The result shows that (1) in the projection direction,the impacts from TP and TN on the water environmental quality of Zhangjiang River are the largest,while the impacts from DO and COD are the smallest;(2) so far as the mean projection values of all the river-sections are concerned,0.946 4 is for Xibuhe River Section,1.295 3 is for Huilongjiao Section and 1.545 4 is for Jiepai Section,while the water quality pollution degrees of all the river sections are Jiepai ＞ Huilongjiao ＞ Xibuhe River;(3) in accordance with PPC water environment assessment criteria,the comprehensive projection value of the water environmental quality of Zhangjiang River is 1.262 4 and belongs to the water quality of Class II,thus meets the relevant water environment function zoning requirement;(4) according to the fuzzy comprehensive assessment method,the water quality of Xibuhe River Section is Class I,the water quality of Huilongjiao Section is Class IV and the water quality of Jiepai Section is Class V,while the comprehensive water quality of Zhangjiang River is Class IV with a larger difference from the water environment function zoning requirement.The study result is helpful for the scientific management of the water environment within karst area,moreover,the study method can provide a new idea for the assessment on water environment quality as well.关键词
樟江/水环境质量/投影寻踪聚类模型/模糊综合评价法/综合评价Key words
Zhangjiang River/water environmental quality/Projection Pursuit Clustering/Fuzzy Comprehensive Assessment/comprehensive assessment分类
环境科学引用本文复制引用
王历,周忠发,侯玉婷,谭玮颐,李丹丹,冯倩..基于投影寻踪聚类模型的喀斯特地区水环境质量评价分析——以荔波县樟江为例[J].水利水电技术,2018,49(3):111-118,8.基金项目
国家自然科学基金地区项目“喀斯特石漠化地区生态资产与区域贫困耦合机制研究”(41661088) （41661088）
喀斯特筑坝河流水安全评估与调控对策(U1612441) （U1612441）
贵州省高层次创新型人才培养计划——“百”层次人才(黔科合平台人才[2016]5674) （黔科合平台人才[2016]5674）
贵州省国内一流学科建设项目(黔教科研发[2017]85号) （黔教科研发[2017]85号）
国家遥感中心贵州分部平台建设(黔科合计Z字[2012]4003) （黔科合计Z字[2012]4003）
