通过在田中作物残留物回归刺激的温室气体排放的元分析:减缓策略
Qianying Wu1, Ruitao Lou1, Yong He1
1Department of Biosystems Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang Province, 310058, China.
Journal of environmental management
|September 27, 2024
概括
将作物残留物返回田会增加温室气体 (GHG) 的排放,特别是甲 (CH4) 和氧化 (N2O). 土壤pH值和管理实践等特定地点的因素是有效减轻这些排放的关键.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 众所周知,在田中作物残留物的回归会增加温室气体 (GHG) 排放.
- 环境和管理因素对这些排放量影响的程度尚不清楚.
研究的目的:
- 评估田的温室气体排放量 (CH4和N2O),并回收残留物.
- 评估残留物回归的缓解潜力,并结合特定地点的关键因素.
主要方法:
- 一项对来自 155 篇同行评审出版物的 1047 个观察集的元分析.
- 统计建模以确定温室气体排放和缓解效率的驱动因素.
主要成果:
- 其余的回报率增加了CH4的73%,N2O的14%.
- 土壤pH值,土壤有机物 (SOC) 和总是温室气体排放的重要调节因素.
- 间歇性灌和中季排水显著减少了性土壤中的CH4;草碳化显示了酸性/中性土壤中的负CH4排放.
结论:
- 特定地点的因素对于调节田残留物回归的温室气体排放至关重要.
- 定制的农业战略,将残留物回收与控制灌和管理等实践相结合,对于有效的温室气体减排至关重要.
- 基于土壤pH值和SOC含量的低碳计划,以优化管理.
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