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Effect of microplastics on organic matter decomposition in paddy soil amended with crop residues and labile C: A three-source-partitioning study

Journal of Hazardous Materials 2021 106 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Davey L. Jones Yun Liang, Yun Liang, Yun Liang, Yun Liang, Yun Liang, Yun Liang, Yun Liang, Yun Liang, Yun Liang, Yun Liang, Mouliang Xiao, Mouliang Xiao, Yun Liang, Yun Liang, Yun Liang, Yun Liang, Davey L. Jones Yun Liang, Yun Liang, Muhammad Shahbaz, Davey L. Jones Mouliang Xiao, Mouliang Xiao, Davey L. Jones Yun Liang, Mouliang Xiao, Yun Liang, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Yun Liang, Yun Liang, Muhammad Shahbaz, Mouliang Xiao, Mouliang Xiao, Mouliang Xiao, Muhammad Shahbaz, Tida Ge, Mouliang Xiao, Mouliang Xiao, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Yun Liang, Yun Liang, Jian Yang, Yun Liang, Davey L. Jones Yun Liang, Tida Ge, Shuang Wang, Tida Ge, Davey L. Jones Davey L. Jones Tida Ge, Tida Ge, Tida Ge, Davey L. Jones Davey L. Jones Davey L. Jones David R. Chadwicka, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Tida Ge, David R. Chadwicka, Davey L. Jones Davey L. Jones Tida Ge, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Jianping Chen, Davey L. Jones Tida Ge, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Tida Ge, Tida Ge, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Jianping Chen, Tida Ge, Jianping Chen, Jianping Chen, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Tida Ge, Tida Ge, Tida Ge, Tida Ge, Davey L. Jones Mouliang Xiao, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Tida Ge, Tida Ge, Tida Ge, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones

Summary

Researchers used isotope labeling to separate contributions of native soil carbon, added crop residues, and labile carbon to CO2 flux in paddy soils containing microplastics, finding that MPs suppressed decomposition of native soil carbon while accelerating breakdown of fresh crop residues.

Microplastics (MPs) are a widespread pollutant in terrestrial ecosystems. However, knowledge on how MPs impact soil organic matter (SOM) decomposition and the priming effect (PE) in rice paddy soil remains limited. By employing a three-source-partitioning approach, we investigated the interactive impact of MP dosage (none, low [0.01% w/w] or high [1% w/w]), labile C (C-labeled glucose), and C-labeled rice straw addition on SOM decomposition and PE. Compared to soil without C addition (i.e., control), total SOM-derived CO in low-MP soil declined by 13.2% and 7.1% after straw and glucose addition, respectively. Under combined glucose and rice straw addition, glucose-induced PE was up to 10 times stronger in the presence of low-MPs compared to that in high-MPs. However, glucose induced negative PE on rice straw decomposition in the presence of MPs. SOM decomposition was much higher under low MP dosage than under high MP dosage. However, MPs had a negligible effect on the mineralization of exogenous C substrate (glucose or straw). This study provides a novel and valuable insight on how MPs affect SOM turnover and C sequestration in paddy soil, highlighting the significance of interactions between environmental pollutants and biogeochemical processes that affect CO fluxes.

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