植林は中国の直接的・間接的な都市拡大による土壌保全サービスと炭素ストックの損失を部分的に相殺する
Afforestation Partially Offsets Losses of Soil Conservation Services and Carbon Stock From Direct and Indirect Urban Expansion in China (原題)
Shuai Liu, Ting Hua, Shurong Zhang, Yiman Zhang, Wenwu Zhao
🤖 gxceed AI 要約
日本語
中国の2000〜2020年の都市拡大が、直接・間接的な土地利用変化を通じて土壌保全サービスと炭素ストックに与えた影響を定量化。間接的な影響（農地補償政策による自然土地の転換）が直接的な影響の15倍の自然土地損失を引き起こし、炭素ストックや侵食防止に大きな損失をもたらした。植林は一部の損失を相殺するが、砂嵐防止効果は限定的。持続可能な土地利用戦略への示唆を提供。
English
Quantifies the impacts of direct and indirect urban expansion on soil conservation services and carbon stock in China from 2000 to 2020. Indirect effects (cropland expansion under the Farmland Requisition-Compensation Balance policy) caused 15 times more natural land loss than direct urban expansion, leading to significant carbon and erosion regulation losses. Afforestation partially offsets these losses, but its effect on sandstorm prevention is limited. Provides insights for sustainable land-use 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
日本の都市計画や土地利用政策において、間接的な土地利用変化が炭素ストックや生態系サービスに与える影響を考慮する重要性を示す。SSBJや気候関連開示において、サプライチェーンを通じた間接影響の評価に示唆を与える。
In the global GX context
Highlights the importance of accounting for indirect land-use changes in climate and sustainability reporting. Relevant to global frameworks like TCFD and ISSB, which increasingly consider land-use impacts and carbon stock changes. Provides empirical evidence for China, but the methodology can be applied globally.
👥 読者別の含意
🔬研究者:Provides a robust method to distinguish direct and indirect urban expansion impacts on ecosystem services, useful for land-use and carbon accounting research.
🏢実務担当者:Offers insights for companies with land-based supply chains to assess indirect land-use change risks and opportunities for afforestation.
🏛政策担当者:Informs land-use planning and afforestation policies to mitigate carbon and ecosystem service losses from urban expansion.
📄 Abstract（原文）
ABSTRACT Urban expansion has exerted both direct and indirect impacts on natural land and ecosystem services it supports, driven by increasing population and food demand, yet these underlying pathways remain insufficiently distinguished. Here, we quantified the losses of soil conservation services (water erosion regulation and sandstorm prevention) and carbon stock in China from 2000 to 2020, resulting from direct and indirect urban expansion. Direct land cover changes induced by urban expansion (DUE) denotes the conversion of natural land and cropland into urban areas, while Indirect land cover changes induced by urban expansion (IUE) entails cropland occupying natural lands to compensate for urban‐induced cropland loss elsewhere. Explicit impacts of IUE (EIUE), involving cropland expansion onto natural land under the Farmland Requisition‐Compensation Balance (FRCB) Policy; and implicit impacts of IUE (IIUE), driven by natural land losses through non‐FRCB‐driven cropland expansion. Results demonstrated that IUE induced 37.77 Mha natural lands loss, which was 15‐times as that from DUE. DUE and EIUE concentrated in eastern China, while IIUE concentrated in central, western and northeastern. Furthermore, IUE caused greater losses than DUE regarding carbon stock (94.31 vs. 4.48 Mt C), water erosion regulation (5353.01 vs. 205.31 Mt), and sandstorm prevention (49.48 vs. 1.48 Mt). Afforestation partially offsets negative impact of DUE and IUE, with stronger effects observed in northeastern and southern China. However, its effect on sandstorm prevention was limited due to spatial discrepancies between afforestation hotspots and major wind erosion areas. This research provides an insightful understanding on multi‐dimensional impacts of urban expansion on land cover and ecosystem services to inform more sustainable land‐use strategies.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/ldr.70863first seen 2026-08-23 04:48:33
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