释放微生物死体增强土壤碳捕获的潜力:利用元分析对耕地管理的全球视角
Peng Wang1, Ji Liu2, Ying Liu3
1Department of Biosystems Engineering, Zhejiang University, 310058 Hangzhou, China.
Environmental research
|October 7, 2025
概括
微生物死体 (MNC) 在农田中对土壤有机碳 (SOC) 作出了重大贡献,诸如联合肥料和肥应用等管理实践提高了MNC和SOC库存. 持续的营养投入优化了微生物群落,以增加土壤碳封存.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 在耕地中的土壤有机碳 (SOC) 封存受微生物死体质 (MNC) 的影响.
- 从农业生态的角度来看,农业管理对跨国公司的形成及其对国有企业的贡献的影响仍然不清楚.
研究的目的:
- 调查耕地管理实践如何影响微生物死体碳 (MNC) 以及其对土壤有机碳 (SOC) 库存的贡献.
- 建立一个跨国企业和国有企业的全球数据库,包括气候和土壤属性,以分析管理影响.
主要方法:
- 从77项全球研究中编制了834个配对的实验数据点.
- 开发了一个结合气候因素和土壤特性的死体碳数据库.
- 分析了各种农田管理实践对跨国公司和国有企业的影响.
主要成果:
- 农业管理通过改变微生物群落和土壤条件来调节MNC形成和SOC库存,MNC对SOC贡献9.142.2%.
- 矿物肥和肥料的组合产生了最高的MNC (0.55 Mg C ha-1) 和SOC (1.39 Mg C ha-1) 的增量.
- 长期的营养投入,特别是联合肥料和便,显著增加了MNC对新封存的SOC的贡献 (高达54.5%).
结论:
- 微生物死体 (MNC) 在驱动农田SOC封存方面发挥着关键作用.
- 优化微生物社区功能的综合管理实践是提高土壤碳封存的关键.
- 持续的营养管理对于增加新成立的SOC中MNC的比例至关重要.
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