综合管理战略,以减轻北中国平原的碳和足迹
Jingxia Wang1, Yongkang Duan2, Shaohui Huang2
1Institute of Agricultural Resources and Environment, Hebei Academy of Agriculture and Forestry Sciences/Hebei Key Laboratory of Soil Fertilization and Agricultural Green Development, Shijiazhuang, 050051, China; State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China.
Journal of environmental management
|November 28, 2025
概括
减少肥的使用是可持续农业的关键. 控制释放尿素和尿酶抑制剂等先进的方法显著减少了碳和排放,改善了北中国平原的生态经济效益.
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:
- 过度化肥的密集农业导致大量的碳 (C) 和活性 (Nr) 排放.
- 解决协同减少C-N排放对于农业的可持续性至关重要.
研究的目的:
- 评估各种管理策略对C和Nr排放的影响.
- 确定在北中国平原 (NCP) 减少环境足迹和增强生态经济效益的最佳战略.
主要方法:
- 进行了一项为期两年的实地实验,比较N输入减少,深度放置,替代肥料,提高效率的N肥料 (CRU,UI,NI,UB) 和有机替代 (UOM,ULOM).
- 应用生命周期评估 (LCA) 和场景分析对来自NCP的区域数据.
主要成果:
- 减少是根本性的;先进的战略使得C和Nr排放量分别减少了4.2-15.2%和20.6-59.3%.
- 控制释放尿素 (CRU) 和尿酶抑制剂 (UI) 显示出优异的性能,减少了14.7-15.8%的C足迹 (CF) 和54.4-54.6%的N足迹 (NF),同时增加了净生态经济效益 (NEEB).
- 场景分析证实UI和CRU将CF降低了26.9%,NF降低了61.4%,环境损害成本 (EDC) 降低了26.3%.
结论:
- 优先考虑CRU和UI技术,结合有机-无机肥料战略,为NCP的可持续强化提供了一个可扩展的途径.
- 拟定区域综合"减排-提高效率"框架,以协调环境安全与农业转型.
- 排放模式的显著区域差异需要定制的管理方法.
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