干旱区研究2025，Vol.42Issue(9)：1599-1611,13.DOI:10.13866/j.azr.2025.09.05
干旱区微塑料污染来源、迁移规律与生态风险
Sources,migration and ecological risks of microplastic pollution in arid regions
摘要
Abstract
Arid regions function as important global sources and sinks for microplastics(MPs),with their unique climatic conditions and human activity patterns giving rise to specific MP pollution characteristics.This article systematically reviews recent advances in understanding MP sources,pollution patterns,migration,and ecologi-cal risks within arid environments.Regarding pollution characteristics,soil MP abundance exhibits significant spatial heterogeneity,with fibrous microplastics accounting for 64％-92％of the total.Polyethylene,polypropyl-ene,and nylon are identified as the main polymer components,primarily originating from agricultural film resi-dues.In terms of migration mechanisms,wind erosion and sandstorm events dominate local-to-regional-scale transport.Due to their high aspect ratio and low density,fibrous microplastics are particularly prone to cross-bor-der atmospheric migration,further prolonged by the coupling effect of electric and wind fields on their atmospher-ic residence time.Ecologically,MPs exert multi-dimensional impacts on ecosystems by altering soil physico-chemical properties(e.g.,pore structure and water retention capacity),interfering with microbial metabolism,and inducing oxidative stress in plants.Future research efforts should focus on integrating multiscale models,investi-gating the combined effects of microplastics and other pollutants,and establishing a standardized monitoring sys-tem.关键词
干旱区/微塑料/来源/迁移规律/生态风险Key words
arid regions/microplastics/source/migration pattern/ecological risk引用本文复制引用
汪彩琴,邵佳时,扶黛叶,张道勇,潘响亮..干旱区微塑料污染来源、迁移规律与生态风险[J].干旱区研究,2025,42(9):1599-1611,13.基金项目
浙江省领雁项目(2025C02216) （2025C02216）
国家自然科学基金青年项目(42107238) （42107238）
浙江省自然科学基金探索项目(LQ22D030004) （LQ22D030004）
