Effects of microplastic pollution on agricultural soil and crops based on a global meta‐analysis

作者：H.X. Li C. Sun, Lin Ai, Xianliang Wu, Yuxin Dai, Chun Jiang, Xiang Chen, Yumei Song, Jiangming Ma, Hao Yang · 发表于：Land Degradation and Development · 年份：2023 · DOI：10.1002/ldr.4957 · 被引用次数：31 · 研究领域：Microplastics and Plastic Pollution、Pharmaceutical and Antibiotic Environmental Impacts

Abstract Agricultural soil serves as a crucial reservoir for microplastics (MPs), necessitating an understanding of their global‐scale environmental impacts and potential risks that they pose to agricultural soil and crops. Little is known about the potential impact of MPs in agricultural soils, compared with MPs in aquatic sediments, especially their effects on crop traits. The purpose of our study was to explore whether different types, concentrations, sizes, and exposure time of MPs, as well as soil conditions (such as soil pH or organic matter concentration), have different effects on soil properties and crop traits. In addition, differences between soil and crop enzymes in response to MPs were compared in detail. Network analysis was used to understand the current research progress on MPs in agricultural soil. Furthermore, utilizing 63 publications and 3268 observations, a meta‐analysis was conducted to analyze the effects of MPs on soil properties and crop traits. Our result showed that China has contributed the most to MP research. Crop traits, rather than soil properties, were more sensitive to MPs, significantly increasing crop biochemical traits (p < 0.05) and decreasing crop morphological traits (p < 0.001). MPs significantly inhibited fruit, shoot, and root morphological traits by 13.34% (p < 0.05), 9.7% (p < 0.001), and 6.65% (p < 0.001), respectively; inhibited crop physiological traits such as photosynthesis, respiration, and transpiration by 9.1% (p < 0.001), ...