腐朽クラス別の枯死木バイオマス、炭素蓄積量、二酸化炭素換算量の定量化
Quantification of deadwood biomass, carbon stock, and carbon dioxide equivalent across decay classes (原題)
A.E. VICTOR
🤖 gxceed AI 要約
日本語
ナイジェリア・エド州の道路拡張沿線で枯死木55試料を腐朽クラス別（健全・中間・腐朽）に測定し、バイオマス・炭素蓄積・CO₂換算量をIPCCガイドラインに沿って算出した。健全木が最も高い値を示し、腐朽が進むほど低下した。体積は炭素蓄積の信頼できる予測因子であり、腐朽クラス別評価を森林炭素インベントリやMRVに組み込む重要性を示す。
English
This study quantified deadwood biomass, carbon stock, and CO2e across three decay classes along a road corridor in Edo State, Nigeria, using 55 coarse woody debris samples and IPCC guidelines. Sound deadwood held the highest values, declining with decomposition. Volume strongly predicted carbon stock, underscoring the need for decay-class-specific deadwood assessment in forest carbon inventories and MRV systems.
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
日本では森林炭素吸収源がGX・カーボンニュートラル政策やJ-クレジットの森林管理と直結する。枯死木という見落とされがちな炭素プールの腐朽クラス別評価手法は、国内の森林炭素インベントリやMRV精度向上に示唆を与える。
In the global GX context
Globally, accurate forest carbon accounting underpins LULUCF inventories under the Paris Agreement and emerging nature-related disclosure (TNFD). This work refines deadwood carbon estimation, a frequently omitted pool, supporting more credible MRV and carbon credit integrity in tropical and disturbed landscapes.
👥 読者別の含意
🔬研究者:腐朽クラス別の枯死木炭素定量手法と体積-炭素関係の実証データを提供する。
🏢実務担当者:森林・土地利用プロジェクトの炭素会計やクレジット算定で枯死木プールを組み込む際の参考になる。
🏛政策担当者:国家森林炭素インベントリやMRV制度に枯死木評価を義務付ける根拠を提供する。
📄 Abstract（原文）
Deadwood constitutes an important yet frequently overlooked carbon pool in tropical forest ecosystems, contributing significantly to carbon storage and climate change mitigation. This study quantified deadwood biomass, carbon stock, and carbon dioxide equivalent (CO₂e) across three decay classes (Sound, Intermediate, and Rotten) along the Sobe road dualization corridor in Edo State, Nigeria. Using a stratified systematic sampling design, 55 coarse woody debris samples were measured for diameter, length, basal area, and volume. Biomass was estimated using decay-adjusted wood density, while carbon stock and CO₂e were calculated following IPCC guidelines. Sound deadwood recorded the highest mean biomass (0.824 ± 0.645 kg ha-¹), carbon stock (0.392 kg C ha-¹), and CO₂e (1.440 kg CO₂e ha-¹), whereas rotten wood exhibited the lowest values due to advanced decomposition. Biomass differences among decay classes were highly significant. Deadwood volume demonstrated an almost perfect positive relationship with carbon stock, indicating that volume is a reliable predictor of carbon storage. The findings emphasize the importance of incorporating decay-class-specific deadwood assessments into forest carbon inventories, Monitoring, Reporting and Verification systems, and climate mitigation initiatives to improve carbon accounting accuracy in disturbed tropical landscapes.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.5281/zenodo.23145814first seen 2026-10-06 05:04:17 · last seen 2026-10-06 05:04:19
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