中国资源综合利用2026，Vol.44Issue(9)：217-219,3.DOI:10.3969/j.issn.1008-9500.2026.09.065
延边州流域高锰酸盐指数时空分布特征与污染源解析
Spatiotemporal Distribution Characteristics and Pollution Source Apportionment of Permanganate Index in Yanbian Prefecture River Basins
朴海燕1
作者信息
- 1. 延边州生态环境局延吉市分局,吉林 延吉 133000
- 折叠
摘要
Abstract
Based on multi-source water quality data from the Yanbian prefecture river basins spanning 2018 to 2023,a coupled STL-Kriging-PMF-RF model was constructed to systematically analyze the spatiotemporal distribution and pollution source structure of the permanganate index.The results indicate a significant upward trend in the permanganate index,with concentrations during the wet season being 1.2 to 2.0 times those in the dry season.Spatially,a gradient distribution characterized by"low values in the upper reaches and high values in the lower reaches"was observed,with Moran's I reaching 0.21 to 0.58.Source apportionment reveals that agricultural non-point sources dominate the pollution,followed by domestic sources and industrial sources.The spatial interpolation goodness of fit R2 is greater than 0.92,the success rate of the Positive Matrix Factorization(PMF)model stability test exceeds 90%,and the random forest out-of-bag error is below 8%,indicating that the models possess high accuracy and reliability.This study elucidates the coupled driving mechanism of rainfall-runoff-pollution input.关键词
高锰酸盐指数/时空分布/污染源解析Key words
permanganate index/spatiotemporal distribution/pollution source apportionment分类
资源环境引用本文复制引用
朴海燕..延边州流域高锰酸盐指数时空分布特征与污染源解析[J].中国资源综合利用,2026,44(9):217-219,3.
