基于结构方程模型的酚类流域化学完整性评估

王旭升; 王晓南; 刘征涛

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中国环境科学 ›› 2026, Vol. 46 ›› Issue (2) : 963-971.

环境生态

基于结构方程模型的酚类流域化学完整性评估

王旭升^1,2, 王晓南¹, 刘征涛^1,2

作者信息 +

Assessment of watershed chemical integrity for phenolic pollutants using structural equation modeling

WANG Xu-sheng^1,2, WANG Xiao-nan¹, LIU Zheng-tao^1,2

Author information +

文章历史 +

摘要

本研究通过分析长江流域84个地表水采样点168个样品的理化参数和酚类污染物浓度,构建可推广的结构方程模型(SEM),量化酚类污染物对化学完整性的直接与间接影响路径.通过整合常规水质参数、酚类及重金属数据,使用主成分分析(PCA)构建化学压力指数,SEM建模分析环境调节因子的中介效应.结果表明,酚类污染通过直接毒性(路径系数β=-0.55)和环境控制的间接路径(β=-0.14)削弱化学完整性,重金属协同效应显著.本研究提出了化学完整性指数(ICI)的计算公式,为流域污染管控提供定量工具.

Abstract

This study analyzed physicochemical parameters and phenolic pollutant concentrations from 168 water samples collected at 84 surface water sampling sites in the Yangtze River Basin. A structural equation modeling (SEM) framework was constructed to quantify the direct and indirect pathways through which phenolic pollutants impact chemical integrity. The methodology involved the integration of conventional water quality parameters, phenolic compounds, and heavy metal data, with a chemical pressure index being constructed using principal component analysis (PCA). The mediating effects of environmental regulatory factors were analyzed via partial least squares SEM. It was found that phenolic pollution significantly impaired chemical integrity through direct toxic effects (path coefficient β = -0.55) and indirect pathways mediated by environmental controls (β = -0.14), with notable synergistic effects being exhibited by heavy metals. A formula for the Chemical Integrity Index (ICI) was proposed, providing a quantitative tool for watershed pollution management and control.

导出引用

王旭升, 王晓南, 刘征涛. 基于结构方程模型的酚类流域化学完整性评估[J]. 中国环境科学. 2026, 46(2): 963-971

WANG Xu-sheng, WANG Xiao-nan, LIU Zheng-tao. Assessment of watershed chemical integrity for phenolic pollutants using structural equation modeling[J]. China Environmental Science. 2026, 46(2): 963-971

中图分类号： X131.2

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