GrassSyn数据集:巴西草地生态系统中的土壤有机碳储量
Bianca Ott Andrade1,2, Cristhian Hernandez Gamboa1,3, Gabriel William Dias Ferreira4
1Departamento de Ciência do Solo, Escola Suprior de Agricultura Luiz de Queiroz/Universidade de São Paulo, Piracicaba, Brazil.
Journal of environmental quality
|December 25, 2024
概括
巴西的土壤有机碳 (SOC) 库存
科学领域:
- 土壤科学 土壤科学
- 生态生态学 生态生态学
- 气候科学 气候科学
背景情况:
- 生态系统管理和恢复有助于增强碳储存,但缺乏生态系统特定的土壤有机碳 (SOC) 数据阻碍了政策制定.
- 基准SOC库存数据对于明智的气候和生物多样性政策至关重要.
研究的目的:
- 为了检查巴西主要草原生态系统的SOC库存变化.
- 讨论SOC库存信息的数据限制和应用.
主要方法:
- 编制了来自803个地点的182项研究 (1996-2021) 的草地合成工作组数据集.
- 系统的文献审查和区域土壤采样提供了空间显式的SOC库存和土壤特性,深度高达100厘米.
主要成果:
- 根据草地生态系统类型和采样深度,SOC库存的变化很大.
- 亚热带草原 (Campos Gerais,巴西南部高地草原,Pampa) 呈现出最高的SOC储量 (0-100厘米:137.6224.7Mg C ha-1).
- 塞拉多和亚马逊草地生态系统也显示出大量的SOC库存,特别是在地下层.
结论:
- 巴西的自然/半自然草地生态系统拥有大量的碳储量.
- 编制的数据集对巴西国家温室气体清单有价值.
- 一些巴西的草生态系统仍然未得到采样,这突出了未来研究的领域.
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