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Trends and mechanisms in agricultural mulch film microplastic pollution: a critical review. Review article

Feng Xiaoxiao, Shang Yuanyuan, Chen Shuai, Xu Junli

Green Sciences

2025

Vol. 27, nr 3

33--51

This study systematically reviews the formation, migration, and effects of mulch film-derived microplastics on soil ecosystems, as well as the combined effects of microplastics and pesticides. This review highlights that mulch film microplastics affect plant growth by altering soil properties, nitrogen metabolism, and photosynthesis. Additionally, microplastics have negative effects on animal growth, behavior, reproduction, and tissue integrity, with potential health risks to humans through food chain contamination. The migration of microplastics in soil is influenced by biotic and abiotic processes, that common soil organisms accelerate the dispersal of microplastics through bioturbation. The interaction between microplastics and pesticides was evaluated, revealing potential risks of enhanced soil pollution through changes in pesticide adsorption, degradation, and transport. Future research should prioritize the development of biodegradable mulch films, improvements in microplastic degradation technologies, and investigations into the environmental behavior of microplastics in soil to mitigate their ecological impacts and support sustainable agricultural practices.