Climate Zone Overrides Litter Input in Shaping Forest Soil Carbon Fractions: A Global Meta-Analysis
気候帯が森林土壌炭素画分に対するリター投入の影響を凌駕する：グローバルメタ分析 (AI 翻訳)
Yu Gao, Ju Gu, Yan Zhao, Suyan Li
🤖 gxceed AI 要約
日本語
本メタ分析は、リター操作が森林土壌有機炭素（SOC）画分に与える影響を1555の観測データから解析。気候帯がリター投入よりもSOC応答の主要な調整因子であることを示し、特に鉱物結合有機炭素（MAOC）はリター操作に対して不変であることを発見。熱帯林では炭素増加が鈍く、温帯林で応答性が高い。この結果は、一律のリター管理から気候帯別の森林管理へのパラダイムシフトを促す。
English
This global meta-analysis of 1555 observations reveals that climate zone, not litter manipulation, is the dominant moderator of forest soil organic carbon (SOC) fraction responses. Litter addition increases labile fractions but leaves mineral-associated organic carbon (MAOC) largely unchanged, while litter removal depletes labile pools without destabilizing MAOC. Tropical forests show attenuated carbon gains under litter addition compared to temperate systems. The findings call for climate-zone-specific forest management 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
日本の森林管理やJ-クレジット制度における土壌炭素貯留の評価に示唆を与える。気候帯別の管理の重要性を強調し、一律のリター増加策の限界を指摘。
In the global GX context
This study challenges the assumption that litter management directly enhances long-term carbon stability, relevant for global forest carbon accounting and nature-based solutions. It emphasizes climate-zone-specific strategies, which can inform IPCC guidelines and national greenhouse gas inventories.
👥 読者別の含意
🔬研究者:Provides evidence that MAOC is inert to litter manipulation, shifting focus to climate zone as key moderator in soil carbon dynamics.
🏢実務担当者:Suggests that forest carbon projects should prioritize protecting existing soil carbon in vulnerable biomes rather than indiscriminate litter augmentation.
🏛政策担当者:Highlights the need for climate-zone-specific forest carbon management policies, relevant for national climate mitigation strategies.
📄 Abstract（原文）
Litter input, including aboveground and belowground plant residues such as leaves, branches, and roots, is a major pathway of carbon return to forest soils. The prevailing paradigm in forest carbon management emphasizes litter input as the primary driver of soil organic carbon (SOC) sequestration. Here, litter input refers specifically to experimental litter manipulation, including litter-addition and litter-removal treatments. Although numerous experimental studies have examined the effects of litter manipulation on SOC, several limitations remain. By synthesizing 1555 global observations, we demonstrate that climate zone, not litter manipulation per se, is the dominant moderator of SOC fraction responses. Litter addition significantly increased labile fractions (light fraction: +60%) but left MAOC largely unchanged. Conversely, litter removal depleted labile pools yet failed to destabilize MAOC. This universal inertia of MAOC challenges the assumption that litter management directly enhances long-term carbon stability. Furthermore, we reveal a critical climate dependency: tropical forests show attenuated carbon gains under litter addition, while temperate systems are more responsive. Our findings necessitate a paradigm shift from uniform litter-based strategies to climate-zone-specific forest management, prioritizing the protection of existing soil carbon in vulnerable biomes over indiscriminate litter augmentation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/f17040460first seen 2026-05-05 19:11:52
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。