自然和人类的干扰对整个生态系统的碳储存有非线性影响在非洲的沙原
Liana Kindermann1, Alexandra Sandhage-Hofmann2, Wulf Amelung2
1Biodiversity Research/Systematic Botany, University of Potsdam, Potsdam, Germany.
Global change biology
|April 15, 2025
概括
干旱地区的生态系统根据土地使用的方式来储存碳. 中间干扰,如放牧或砍伐木材,可以促进非洲沙原的碳储存,影响全球碳预算.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 气候变化科学 气候变化科学
背景情况:
- 干旱地区的生态系统对全球碳预算至关重要,但由于干扰,碳储存估计不确定.
- 土地利用变化显著改变了干扰制度,影响了这些脆弱系统中的碳动态.
研究的目的:
- 研究农业强化和野生动物保护对非洲大草原生态系统碳储存的影响.
- 在不同的土地利用变化路径和植被类型下,量化木质植被中的地面 (AGC) 和地下 (BGC) 碳和土壤有机碳 (SOC).
主要方法:
- 适应干旱地区条件的树木库存和土壤采样技术.
- 在灌木草原和林地草原植被类型中量化AGC,BGC和SOC.
- 采用了通用添加剂混合模型来分析影响AGC和生态系统总碳 (C总) 的环境驱动因素.
主要成果:
- 在灌木草原的灌木 AGC 非常脆弱,在保护 (56%) 和强化 (90%) 途径下显著下降.
- 林地草原中的树木AGC在农业集约化下下降了95%.
- 随着干扰的增加,SOC库存出乎意料地增加,特别是农业的强化,可能是由于土壤转换和碳再分配.
结论:
- 易受干扰的干旱地区根据土地使用和植被类型表现出不同的碳储备脆弱性.
- 中级干扰水平可以增强干地生态系统中的碳储存,挑战传统的保护方法.
- 管理策略和碳认证计划必须考虑为干旱地区量身定制的方法,平衡土地利用目标与碳封存目标.
关键词:
非洲的沙瓦纳,非洲的沙瓦纳.农业集约化 农业集约化储存碳是为了储存碳.干扰剂是一种干扰剂.干旱地区的生态系统大象大象的大象大象的大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象大象土地使用变化.土壤有机碳土壤有机碳野生动物保护 野生动物保护有木质植被的植被.更多相关视频
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