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

文献类型： 外文期刊

第一作者： Liu, Zihan

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

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）

ISSN：

年卷期： 2025 年 16 卷 1 期

页码：

收录情况： SCI

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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