桃子 (Prunus persica L.) 果园中的二氧化排放和驱动因素与不同的输入
Guoli Wang1, Jiayao Du1, Shouxiang Wang1
1School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China.
Journal of environmental management
|August 7, 2025
概括
肥显著增加了桃园的氧化 (N2O) 排放. 土壤条件和气候因素也推动了这些农业温室气体排放,影响了全球库存.
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:
- 全球水果生产正在扩大,增加了农业温室气体排放.
- 果园具有独特的农业管理实践,影响氧化物 (N2O) 排放.
- 了解果园中的N2O排放和驱动因素对于减缓气候变化至关重要.
研究的目的:
- 在不同 (N) 输入条件下,评估北中国桃园的N2O排放.
- 确定影响桃园N2O排放的关键环境因素.
- 综合现有的关于全球桃园N2O排放的文献.
主要方法:
- 实地实验测量了两个桃园的N2O排放,其N受精率各不相同.
- 来自七项同行评审的桃园研究的42 N2O排放测量的文献综合.
- 统计分析以确定N输入,土壤参数,气候因素和N2O排放之间的关系.
主要成果:
- N应用显著增加了N2O排放,传统的N处理显示出比无N处理高8.2倍的排放量 (8.8公斤Nha-1 yr-1,1.4%的排放因子).
- 土壤酸盐,降水,土壤充满水的孔隙空间 (WFPS) 和土壤温度被确定为N2O排放的重要驱动因素.
- 文献综合证实,N应用增加了N2O排放 (平均5.6公斤ha-1 yr,1.7%的排放因子),与N肥料率线性增加 (R2 = 0.85).
结论:
- 受精的桃园是氧化 (N2O) 排放的重要来源.
- 输入和气候条件是桃园N2O排放的主要驱动因素.
- 调查结果有助于完善温室气体库存,并为果园农业制定减排战略.
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