自然再生增强了土壤的长期碳储存,比主动恢复更有效地进行各种分数:元分析
Yuqian Ye1, Ruiyang Zhang1, Dashuan Tian1
1Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
Global change biology
|May 23, 2025
概括
自然再生在长期内显著增加了土壤有机碳 (SOC) 和聚合碳,而不是积极恢复. 这种方法在森林和草原中表现出色,增强土壤健康和减缓气候变化.
科学领域:
- 土壤科学 土壤科学
- 生态系统恢复 恢复生态系统
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 陆地生态系统的恢复对于土壤有机碳 (SOC) 储存至关重要.
- 恢复对土壤聚合物有机碳的长期影响尚不清楚.
- 区分自然再生和主动恢复效应至关重要.
研究的目的:
- 全球评估自然和活跃恢复对SOC和聚合有机碳的时间影响.
- 为了比较自然再生与积极恢复在不同生态系统和时间尺度上的有效性.
- 通过生态系统恢复确定土壤碳封存的最佳策略.
主要方法:
- 进行了对陆地生态系统恢复研究的全球元分析.
- 分析了土壤有机碳 (SOC) 和聚合物分量的时间变化 (宏聚合物,微聚合物,粘土粘土).
- 自然再生和主动恢复方法之间的结果比较.
主要成果:
- 自然再生在增强SOC (21%更高) 和宏聚合物 (MAC) 碳 (24%更高) 方面在全球范围内表现优于活性恢复.
- 自然再生对SOC和MAC的好处随着时间的推移而加剧,超过40年后的积极恢复.
- 在森林和草原中,与积极恢复相比,自然再生显示了较高的SOC和MAC积累.
结论:
- 对于长期的土壤碳封存,自然再生优于主动恢复.
- 这种方法提高了SOC在更深层土壤和碳贫困地区的储存.
- 自然再生是可持续生态系统恢复和气候变化缓解的关键战略.
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