Andrade Bianca Ott, Gamboa Cristhian Hernandez, Ferreira Gabriel William Dias, Wiesmeier Martin, Assad Eduardo Delgado, Cerri Carlos Eduardo Pellegrino, Mello José Márcio, Morais Vinícius Augusto, Overbeck Gerhard E, Pinto-Junior Herval Vieira, Scolforo José Roberto Soares, Tornquist Carlos Gustavo
Departamento de Ciência do Solo, Escola Suprior de Agricultura Luiz de Queiroz/Universidade de São Paulo, Piracicaba, Brazil.
Department of Environmental and Life Sciences, Karlstad University, Karlstad, Sweden.
J Environ Qual. 2025 Mar-Apr;54(2):335-348. doi: 10.1002/jeq2.20665. Epub 2024 Dec 25.
Although ecosystem management and restoration are known to enhance carbon storage, limited knowledge of ecosystem-specific soil organic carbon (SOC) stocks and processes hinders the development of climate-ready, biodiversity-focused policies. Baseline SOC stocks data for specific ecosystems is essential. This paper aims to: (i) examine SOC stock variability across major grassy ecosystems in Brazil and (ii) discuss data limitations and applications. We compiled the Grassland Synthesis Working Group dataset, which comprehensively aggregates SOC stocks data from published studies on main Brazil's grassy ecosystems. Our dataset results from systematic literature review and regional soil sampling datasets. The dataset provides spatially explicit SOC stocks, physical soil properties, and ancillary information from 182 studies (1996-2021) across 803 sites, spanning 35° latitude and 28° longitude. The dataset, structured in relational tables, reports soil C stocks and ancillary soil parameters at depths up to 100 cm. SOC stocks vary by grassy ecosystem types and sampling depth, with subtropical grasslands (Campos Gerais, South Brazilian highland grasslands, and Pampa) showing the highest SOC stocks across all depth layers (SOC 0-30 cm: 64.5-162.8 Mg C ha; SOC 0-100 cm: 137.6-224.7 Mg C ha). The tropical Cerrado and Amazon grassy ecosystems exhibit high SOC stocks, particularly in subsurface layers (SOC 0-30 cm: 53.6 and 38.3 Mg C ha; SOC 0-100 cm: 109.8 and 121.4 Mg C ha, respectively). Our data analysis shows high carbon stocks in natural/seminatural ecosystems, but some ecosystems are undersampled. The dataset on SOC stocks in grassy ecosystems could greatly aid Brazil's national greenhouse gas inventory.
尽管已知生态系统管理和恢复能增强碳储存，但对特定生态系统的土壤有机碳（SOC）储量和过程了解有限，这阻碍了制定适应气候变化、以生物多样性为重点的政策。特定生态系统的SOC储量基线数据至关重要。本文旨在：（i）研究巴西主要草地生态系统中SOC储量的变异性，以及（ii）讨论数据局限性和应用。我们汇编了草地综合工作组数据集，该数据集全面汇总了来自已发表的关于巴西主要草地生态系统研究的SOC储量数据。我们的数据集来自系统的文献综述和区域土壤采样数据集。该数据集提供了跨越803个地点、182项研究（1996 - 2021年）的空间明确的SOC储量、土壤物理性质及辅助信息，跨越35°纬度和28°经度。该数据集以关系表形式构建，报告了深度达100厘米的土壤碳储量和辅助土壤参数。SOC储量因草地生态系统类型和采样深度而异，亚热带草地（热拉伊草原、巴西南部高地草原和潘帕草原）在所有深度层均显示出最高的SOC储量（SOC 0 - 30厘米：64.5 - 162.8 Mg C/公顷；SOC 0 - 100厘米：137.6 - 224.7 Mg C/公顷）。热带塞拉多和亚马逊草地生态系统也表现出较高的SOC储量，特别是在地下层（SOC 0 - 30厘米分别为53.6和38.3 Mg C/公顷；SOC 0 - 100厘米分别为109.8和121.4 Mg C/公顷）。我们的数据分析表明天然/半天然生态系统中碳储量较高，但一些生态系统采样不足。草地生态系统中SOC储量的数据集可为巴西的国家温室气体清单提供极大帮助。
