再湿潤化した泥炭地生態系の温室効果ガス収支
Greenhouse Gas Balance of Rewetted Peatland Ecosystems (原題)
Savitha Rabeque C
🤖 gxceed AI 要約
日本語
64件の査読論文を統合したメタ分析により、排水された泥炭地の再湿潤化が正味GHG排出を大幅に削減することを示した。温帯フェンでは正味排出が63%減（19.9→7.4 t CO₂e/ha/年）となるが、CO₂減の一部はCH₄の650%増で相殺される。積極的管理が最も削減効果が高く、熱帯泥炭地は絶対削減ポテンシャルが最大。国家緩和策や炭素市場への泥炭地再湿潤の組み込みを支持する。
English
A meta-analysis of 64 studies shows rewetting drained peatlands cuts net GHG emissions substantially: temperate fens fall 63% (19.9 to 7.4 t CO2e/ha/yr), with a 69% CO2 drop partly offset by a 650% CH4 rise. Active management yields the largest reductions; tropical peatlands offer the greatest absolute potential. Findings support integrating peatland rewetting into national mitigation portfolios and carbon markets.
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
日本には北海道等に泥炭地が分布し、J-クレジットや森林・農地由来の炭素クレジット制度と接続しうる。SSBJ開示においても自然資本・土地利用変化の排出源として注目され、Scope 3や緩和貢献の議論に示唆を与える。
In the global GX context
Peatland rewetting is increasingly recognized under global climate frameworks (UNFCCC, voluntary carbon markets, EU LULUCF) as a nature-based mitigation lever. This synthesis provides quantitative evidence for including rewetting in national inventories and carbon market methodologies, relevant to ISSB/CSRD nature-related disclosures.
👥 読者別の含意
🔬研究者:泥炭地再湿潤のGHG収支に関する定量エビデンスを気候帯別・管理手法別に整理した点が有用。
🏢実務担当者:自然資本・土地利用プロジェクトの炭素クレジット創出や緩和貢献の評価に活用可能。
🏛政策担当者:国家緩和ポートフォリオや炭素市場制度に泥炭地再湿潤を組み込む際の根拠を提供する。
📄 Abstract（原文）
Peatlands store approximately 600 Pg of carbon in organic soils covering just three percent of the global land surface, yet drainage for agriculture and forestry has converted many peatlands from net carbon sinks to substantial greenhouse gas sources. Rewetting drained peatlands is increasingly recognized as a climate mitigation strategy, but the trade-off between reduced CO₂ emissions and enhanced CH₄ production complicates the net greenhouse gas balance. This meta-analysis synthesizes GHG flux measurements from 64 peer-reviewed studies encompassing rewetted peatlands across boreal, temperate, and tropical climate zones. Comparison of drained and rewetted temperate fens reveals that rewetting reduces net GHG emissions by 63 percent (from 19.9 to 7.4 t CO₂e ha⁻¹ yr⁻¹), with a 69 percent reduction in CO₂ emissions partially offset by a 650 percent increase in CH₄ emissions. Among restoration approaches, active management (assisted revegetation, controlled water-table manipulation) achieves the largest net GHG reductions across all climate zones, while paludiculture (productive use of wet peatlands) provides intermediate emission reductions alongside economic returns. Tropical peatlands show the greatest absolute reduction potential (42.6 to 51.2 t CO₂e ha⁻¹ yr⁻¹) owing to their exceptionally high drained-state emissions. These findings support the inclusion of peatland rewetting in national climate mitigation portfolios and carbon market frameworks, while highlighting the need for long-term monitoring to capture temporal dynamics of post-rewetting GHG trajectories.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.5281/zenodo.22744712first seen 2026-10-02 04:43:18
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