Scholarlink

<p>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&#xa0;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&#xa0;increased but PM reduced SOC storage (0–1 m). This difference is likely attributable to the higher microbial C use efficiency in&#xa0;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<sup>–1</sup> year<sup>–1</sup> (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.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

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

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月30日

查看全文
  • 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

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.