The contribution of planted forests to regional carbon storage: evidence from western Hunan, China (1990–2020)
植林された森林の地域炭素貯蔵への貢献：中国湖南省西部（1990-2020年）の証拠 (AI 翻訳)
Ting Deng, Y U N L O N Zhu
🤖 gxceed AI 要約
日本語
本研究は、中国湖南省西部の1990年から2020年における植林と自然林の動態を時空間分析により評価し、地域の炭素貯蔵への影響を定量化した。自然林は減少したが植林は拡大し、単位面積当たりの炭素吸収速度では植林が優れていた。特に、農地転換による新規植林は老齢の安定した自然林と同等の炭素蓄積量（19.0 Tg C）を達成し、迅速な炭素吸収ポテンシャルを示した。この結果は、森林再生政策による純炭素増加を定量化し、長期的な気候・生態的利益のために空間的トレードオフの管理が必要であることを強調する。
English
This study uses spatiotemporal analysis to assess the dynamics of planted and natural forests in western Hunan, China from 1990 to 2020, quantifying their impacts on regional carbon storage. Natural forests declined while planted forests expanded; planted forests showed superior carbon sequestration rates per unit area. Notably, newly established planted forests on converted cropland accumulated carbon stocks nearly equivalent to older natural forests (19.0 Tg C vs 19.5 Tg C), highlighting rapid carbon uptake. The findings quantify net carbon gains from restoration policies and underscore the need to manage spatial trade-offs for long-term climate and ecological benefits.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
In the global GX context
This paper provides empirical evidence from China's Grain-for-Green Program, demonstrating that large-scale afforestation can rapidly accumulate carbon, though spatial trade-offs with natural forests must be managed. It informs global land-use policy debates on the role of planted forests in climate mitigation.
👥 読者別の含意
🔬研究者:Provides empirical data on carbon sequestration rates and spatial dynamics of planted vs. natural forests, useful for land-use change and carbon cycle modeling.
🏛政策担当者:Highlights the carbon benefits of afforestation policies like Grain-for-Green, but also the need to consider ecological trade-offs with natural forests.
📄 Abstract（原文）
The widespread expansion of planted forests, fueled by initiatives such as China’s Grain-for-Green Program, plays a critical role in climate mitigation, yet its carbon performance compared to natural forests remains contested. Using spatiotemporal analysis, this study systematically examines the dynamics of planted and natural forests in the western region of Hunan from 1990 to 2020, and assesses their impacts on regional carbon storage. The results reveal a marked forest transition: while natural forests declined, planted forests expanded considerably, creating a distinct spatial trade-off—planted forests proliferated mainly at mid-low elevations (300–700 m), whereas natural forests were largely confined to higher elevations (400–900 m). Although natural forests stored more carbon overall (55.1% of the regional total), planted forests exhibited superior carbon sequestration rates per unit area. Notably, newly established planted forests on converted land accumulated almost equivalent carbon stocks (19.0 Tg C) to older, stable natural forests (19.5 Tg C), highlighting their rapid carbon uptake potential. Spatiotemporal analysis confirmed that conversion of cropland was the dominant pathway, driving both the expansion of planted forests and the associated carbon gains. These findings quantify the net carbon gain from restoration policies and underscore that future land-use strategies must manage their spatial trade-off to secure long-term climate and ecological benefits.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1186/s13021-026-00443-3first seen 2026-05-05 07:54:51 · last seen 2026-05-05 19:14:22
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