都市および都市周辺景観におけるアグロフォレストリーシステムの土壌有機炭素動態
Soil organic carbon dynamics in agroforestry systems across urban and peri-urban landscapes (原題)
Victor Hugo de Souza Freiris, Vanessa Matos Gomes, Diego Antônio França de Freitas, Luiza Almeida Rodrigues, Bianca Caroline de Souza Chaves, Guilherme Augusto Oliveira Teixeira, Marcus Vinicius Teixeira, Augusto Costa Gonçalves, João Marcos Mendes Costa, Dener Márcio da Silva Oliveira
🤖 gxceed AI 要約
日本語
ブラジルのベロオリゾンテ都市圏で、都市周辺アグロフォレストリーシステム（AFS）の炭素隔離能を評価。AFSは対照地と比べ土壌炭素量を平均44%増加させ、年間10.7 Mg C/haの隔離速度を示した。鉱物結合態有機物の増加が深層まで見られ、長期的な炭素安定化が示唆された。都市計画における自然基盤ソリューションとしてのAFSの重要性を強調。
English
This study evaluates carbon sequestration in urban and peri-urban agroforestry systems (AFS) in the Belo Horizonte metropolitan region, Brazil. AFS increased soil carbon stocks by 44% on average, with a mean sequestration rate of 10.7 Mg C ha⁻¹ yr⁻¹. Increases in mineral-associated organic matter suggest long-term stabilization. Findings support AFS as nature-based solutions for climate mitigation in tropical urban landscapes.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では都市緑化や農地の炭素貯留が注目される中、本研究成果は都市計画や土地利用政策における自然基盤ソリューションの導入根拠となり得る。ただし、日本の気候や土壌条件との違いに留意が必要。
In the global GX context
This paper provides empirical evidence on the climate mitigation potential of agroforestry in tropical urban settings, contributing to the global discourse on nature-based solutions and carbon sequestration. It offers data that can inform urban planning and land-use policies in tropical regions, complementing existing research on soil carbon dynamics.
👥 読者別の含意
🔬研究者:Provides empirical data on soil carbon dynamics in urban agroforestry, useful for carbon sequestration modeling and nature-based solutions research.
🏢実務担当者:Offers evidence for incorporating agroforestry into urban green infrastructure projects to enhance carbon credits and sustainability claims.
🏛政策担当者:Supports policies promoting urban agroforestry as a climate mitigation strategy, with quantitative carbon sequestration rates.
📄 Abstract（原文）
Abstract Background Rapid urbanization and intensive land use have degraded environmental quality in metropolitan regions, increasing the need for management strategies that enhance climate resilience. Urban and peri-urban Agroforestry Systems (AFS) are promising nature-based solutions for carbon sequestration and soil restoration. Methods This study evaluated the carbon mitigation potential of AFS in the Belo Horizonte Metropolitan Region, Brazil. We analyzed total organic carbon (TOC), its physical fractions (Particulate Organic Matter – POM and Mineral-Associated Organic Matter – MAOM), and aggregate-associated carbon in three AFS and paired reference areas. Statistical analyses included comparisons between treatments and Principal Component Analysis (PCA), interpreted as an exploratory tool. Results AFS increased soil carbon stocks by an average of 44% compared to reference areas, with a mean sequestration rate of 10.7 Mg C ha⁻¹ yr⁻¹. The MAOM fraction showed consistent increases across depths, suggesting enhanced long-term carbon stabilization, while POM increases were more pronounced in surface layers. Aggregate-associated carbon did not show clear statistical differences, but a tendency of accumulation in macroaggregates at 10–20 cm depth was observed. PCA showed a separation pattern between AFS and reference sites, indicating an association of AFS with greater carbon accumulation, including at deeper layers. Conclusion Urban and peri-urban AFS are effective carbon sinks that enhance both the quantity and stability of soil organic carbon. These findings reinforce the role of AFS as crucial nature-based solutions for climate mitigation and sustainable planning in tropical metropolitan landscapes.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1007/s44415-026-00112-wfirst seen 2026-08-24 04:49:15
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