ラテンアメリカ半乾燥地域における気候駆動型加速土壌侵食への自然を基盤とした解決策の有効性
Effectiveness of nature-based solutions for adaptation to climate-driven accelerated water erosion in Latin American semi-arid regions (原題)
Luiz Diego Vidal Santos, Emersson Guedes da Silva, Francisco Sandro Rodrigues Holanda, Renisson Neponuceno de Araújo Filho, Jémison Mattos dos Santos, Alceu Pedrotti
🤖 gxceed AI 要約
日本語
気候変動による降雨侵食力の増大に対し、自然を基盤とした解決策（NbS）の土壌損失削減効果をメタ分析で評価。5つの機能グループで平均84.8%の削減を示し、特に浸透性バイオバリアが97.1%と高い効果。地理的移転性には限界があり、地域別の較正が必要。
English
This meta-analysis of 93 comparisons across 43 studies evaluates nature-based solutions (NbS) for reducing soil loss under climate change in semi-arid regions. Mean reduction was 84.8%, with permeable bio-barriers achieving 97.1%. Geographic transferability is variable, highlighting the need for local calibration.
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
日本では土壌侵食が主要課題ではないが、気候適応策としてのNbSの体系的理解は、グリーンインフラや防災投資の文脈で参考になる。
In the global GX context
This study contributes to global climate adaptation literature by quantifying NbS effectiveness, relevant for TCFD/ISSB climate risk assessments and adaptation planning in vulnerable regions.
👥 読者別の含意
🔬研究者:Provides quantitative evidence on NbS effectiveness and transferability, useful for adaptation research.
🏢実務担当者:Offers guidance on selecting NbS for soil conservation, though local calibration is needed.
🏛政策担当者:Informs adaptation policy in semi-arid regions, but less relevant for Japanese policy.
📄 Abstract（原文）
Abstract Climate change is intensifying rainfall erosivity and the frequency of extreme events across semi-arid regions of the Global South, amplifying the vulnerability of hillslopes and watersheds that sustain food and water security for more than 60 million people. Soil loss rates that already reach 36 Gt yr $$^{-1}$$ globally compromise agricultural productivity and water quality, directly affecting the well-being of rural communities and their livelihood opportunities. Nature-based solutions (NbS) constitute adaptation strategies endorsed by the IUCN, yet the dispersion of results across functional macro-groups and fibrous materials hinders prioritization in management programs and regional cooperation initiatives. This study assesses the comparative effectiveness of five functional NbS macro-groups in reducing soil loss in field trials with natural materials, and tests the geographic transferability of the predictive model across a database spanning 18 countries to inform climate adaptation strategies in semi-arid regions. We conducted a PRISMA 2020 meta-analysis comprising 93 control–treatment comparisons from 43 studies, classified into five functional macro-groups and seven aggregated intervention types. The random-effects model indicated a mean reduction of 84.8% in soil loss, with permeable bio-barriers reaching 97.1%, surface covers 89.7%, natural-fiber geoproducts 85.5%, and vegetative barriers 79.8%, whereas living bioengineering did not show a significant effect. The functional macro-group explained 18.2% of the heterogeneity, and slope showed a significant quadratic relationship, with peak effectiveness in the 30–50% range. Geographic cross-validation across 11 countries indicated an RMSPE of 1.32 lnRR, indicating variable transferability and the need for local calibration of climate adaptation strategies. The results suggest that NbS based on natural materials may constitute climate adaptation portfolios oriented toward the well-being of vulnerable communities in Latin America, although the high heterogeneity and the underrepresentation of Latin American sites reinforce the need for standardized field trials in the region.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1007/s11027-026-10350-0first seen 2026-09-03 05:13:15
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