数字农科院2.0

Degradable film mulching increases soil carbon sequestration in major Chinese dryland agroecosystems

文献类型： 外文期刊

作者： Zihan Liu;Chenxu Zhao;Nanhai Zhang;Jing Wang;Zhaoyang Li;Yves Uwiragiye;Nyumah Fallah;Thomas W. Crowther;Yuanyuan Huang;Yuanyuan Huang;Yi Xu;Sheng Zhang;Yakov Kuzyakov;Kadambot H.M. Siddique;Zhikuan Jia;Zucong Cai;Scott X. Chang;Minggang Xu;Christoph Müller;Yi Cheng

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期刊名称： Nature Communications

ISSN： 2041-1723

年卷期： 2025 年 16 卷 1 期

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收录情况： SCIE（2025版）

摘要： Plastic film mulching (PM), which contributes to nearly half of the increased crop yields in dryland agroecosystems, exacerbates environmental burdens due to its non-degradable nature. Globally, there is a growing demand to replace non-degradable PM with degradable film mulching (DM), yet its impacts on soil organic carbon (SOC) in dryland agroecosystems remains unknown. Here, using multi-field studies and mesocosm experiments, we found that DM strongly increased but PM reduced SOC storage (0–1 m). This difference is likely attributable to the higher microbial C use efficiency in soil under DM, leading to increased microbial-derived C compared to PM. Under the high roading scenario for 2100, DM could reduce the decomposition of SOC (0–1 m) in China’s drylands by 9.0 ± 1.0 Mg ha–1 year–1 (one standard error) compared with PM. Our findings highlight that DM is a promising alternative to PM for sequestrating SOC and alleviating C loss under climate change in dryland agroecosystems.

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