和在调节土壤呼吸中的相互作用:一个元分析.
Xiaoying Zheng1, Yun Zhang2, Ye Zhang1
1Institute of Grassland, Flowers and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, China.
The Science of the total environment
|September 28, 2023
概括
添加肥料会以不同的方式影响土壤呼吸 (Rs). (N) 减少了Rs, (P) 没有影响,而N和P的组合增加了Rs,影响了生态系统过程.
科学领域:
- 土壤科学 土壤科学
- 生态生态学 生态生态学
- 生物地质化学生物地质化学
背景情况:
- 全球经济发展增加了土壤的营养投入,特别是 (N) 和 (P).
- 营养投入显著影响陆地生态系统中的土壤呼吸 (Rs),具有潜在的独立或互动效应.
- N和P对Rs及其组成部分 (自性[Ra]和异性[Rh]呼吸) 的特定影响尚不清楚.
研究的目的:
- 进行130项研究的元分析.
- 检查不同施肥处理对陆地生态系统的土壤呼吸 (Rs) 和其组成部分 (Ra和Rh) 的影响.
主要方法:
- 130项已发表的研究的元分析.
- 对受精治疗的分析,包括N,P和NP的添加.
- 检查影响RS反应的因素,如生态系统类型,受精持续时间,速率和形式.
主要成果:
- 添加 (N) 显著降低了土壤呼吸 (Rs) 和异质呼吸 (Rh),但并没有降低自身呼吸 (Ra).
- (P) 添加对Rs,Rh或Ra没有显著影响.
- 结合的N和P (NP) 增加显著增加了Rs,而没有影响Rh或Ra.
- 生态系统类型,施肥持续时间,速度,形式,平均温度和土壤总对Rs对肥料应用的反应产生了影响.
结论:
- 土壤呼吸对施肥的反应是复杂的和多方面的.
- 预测和建模未来的土壤呼吸及其对全球变化的反需要考虑多种影响因素.
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