Spatial interaction and risk zoning of compound pollutants in farmland soils: Insights from heavy metals and polycyclic aromatic hydrocarbons in Hezhang County, China
Xiaofan Xie, Hongyao Li, Xiaosong Yang, Hui Qiu, Yuexian Liu
Abstract
. Through the integration of advanced bivariate LISA mapping and thorough risk assessment, this study precisely delineated ecological risk zones (33.1 %) and more refined health risk zones (40.1 %) associated with combined pollution. The southwest of Hezhang was identified as a critical hotspot for combined pollution risks, primarily due to intensive mining and smelting activities in the region. Overall, this study underscores the utility of bivariate LISA as a robust approach for delineating spatial clustering patterns caused by combined pollutants. It provides crucial insights for identifying regions with heightened human health and ecological risks in rural settings.
Topics & Concepts
ZoningPollutantChinaEnvironmental scienceEnvironmental chemistryHeavy metalsSoil waterPolycyclic aromatic hydrocarbonChemistryEcologyGeographySoil scienceArchaeologyBiologyPolitical scienceLawHeavy metals in environmentToxic Organic Pollutants ImpactEnvironmental Justice and Health Disparities