Rewilded scrubland as a carbon sink: allometric models to improve biomass estimation under herbivory
再生された低木林の炭素吸収源：草食下でのバイオマス推定を改善するアロメトリーモデル (AI 翻訳)
Nancy Burrell, Marc Macias‐Fauria, Elizabeth Jeffers, Kathy Willis
🤖 gxceed AI 要約
日本語
本研究は、英国の再生低木林地において5種の主要低木を破壊サンプリングし、種特異的なアロメトリー式を開発した。その結果、根:シュート比が標準的な森林モデルの予測を上回り、特に強い草食条件下で地下部炭素貯留が現在の想定より大幅に大きいことが明らかになった。これにより、低木林の炭素貯留評価の精度が向上し、GHGインベントリや自然を基盤とした気候戦略への組み込みが可能となる。
English
Using destructive sampling of 290 individuals from five scrub taxa at the rewilded Knepp Estate (UK), this study developed taxon-specific allometric equations with high predictive accuracy (R²=0.63–0.95) for above- and belowground biomass. Results show root:shoot ratios exceeding standard forest models, especially under heavy browsing, indicating that belowground carbon storage in temperate scrub is substantially underestimated. This fills a critical gap in land-based carbon accounting and provides practical tools for integrating scrublands into global GHG inventories and nature-based climate strategies.
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
日本でも里山や二次林の炭素貯留評価に応用可能な手法を提供しており、自然を活用した気候戦略（NbS）や生物多様性強化策の推進に貢献する。特に日本の農林業政策における低木林の位置づけや炭素クレジットの活用に示唆を与える。
In the global GX context
This paper addresses a blind spot in global carbon accounting—temperate scrublands—by providing robust allometric models that reveal significant belowground carbon stocks. It directly supports the credibility of nature-based carbon offsets and aligns with evolving disclosure frameworks (e.g., ISSB, TNFD) that require accurate land-based carbon estimates. The methods are transferable to similar ecosystems worldwide, informing rewilding and restoration policy.
👥 読者別の含意
🔬研究者:Provides species-specific allometric equations and root:shoot ratios for key scrub taxa, enabling more accurate carbon stock estimation in rewilding contexts and highlighting the importance of belowground biomass.
🏢実務担当者:Land managers and carbon offset developers can apply these taxon-specific models to quantify carbon benefits of scrubland restoration and rewilding projects for carbon crediting.
🏛政策担当者:Supports the inclusion of temperate scrublands in national GHG inventories and nature-based climate strategies, with implications for carbon offset certification and biodiversity policy.
📄 Abstract（原文）
Abstract Scrubland ecosystems are increasingly recognised for their biodiversity value and resilience to climatic stress, but their contribution to carbon sequestration remains poorly quantified, particularly in temperate rewilded landscapes. Existing carbon accounting approaches, developed mainly for closed‐canopy forests and agroforestry systems, do not reflect the structural complexity or biomass allocation patterns of scrub, where species commonly form multi‐stemmed stands and invest heavily in belowground biomass (BGB) under herbivory. Using destructive sampling of 290 individuals from five dominant scrub taxa at the rewilded Knepp Estate (UK), we developed taxon‐specific allometric equations incorporating height, canopy area, basal stem diameter and browsing intensity, achieving high predictive accuracy ( R 2 = 0.63–0.95) for above‐ and BGB. These equations reveal root: shoot ratios that exceed those predicted by standard forest models, particularly in heavily browsed plants, indicating that belowground carbon storage in scrub systems is substantially greater than currently assumed. By improving biomass estimation for rewilded scrub, this study fills a key gap in land‐based carbon accounting and provides practical tools for integrating scrublands into global greenhouse gas inventories and nature‐based climate strategies, supporting recognition of temperate scrub as a significant, currently undervalued carbon sink with direct implications for rewilding policy, restoration planning and carbon offset schemes.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1088/1748-9326/ae83ccfirst seen 2026-07-20 04:42:03
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