A Synthesis of the Effects of Density Regulation and Mixed-Tree Transformation on Soil Organic Carbon Dynamics in Chinese Fir Plantations
中国のスギ人工林における密度調整と混交林化が土壌有機炭素動態に及ぼす影響の統合 (AI 翻訳)
Shumeng Wei, Qiwu Sun, Liu X, Yuhong Dong, Lingyu Hou, Wenzheng Wang
🤖 gxceed AI 要約
日本語
本総説は、中国のスギ人工林において、密度調整と広葉樹混交が土壌有機炭素(SOC)の蓄積と安定性に及ぼす影響をまとめた。中程度の広葉樹混交は、リターの質向上と土壌pHの中和を通じてSOC隔離を促進する。密度調整は下層植生と根の炭素入力を促進し、相乗効果が期待される。今後の研究課題も提示されている。
English
This review synthesizes mechanisms of density regulation and mixed-forest transformation on soil organic carbon (SOC) dynamics in Chinese fir plantations. Moderate broadleaf admixture significantly enhances SOC sequestration through improved litter quality and pH neutralization. Density regulation complements by facilitating understory development and root carbon input. Knowledge gaps are identified for carbon-oriented sustainable management.
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
日本のスギ・ヒノキ人工林でも、密度管理や広葉樹混交による炭素貯留機能の向上が注目されている。本論文の知見は、日本の森林における炭素吸収源対策の科学的根拠として参考になる。ただし、対象樹種が異なるため、直接適用には検討が必要。
In the global GX context
This paper contributes to nature-based climate solutions by elucidating forest management effects on soil carbon. Relevant to REDD+, IPCC guidelines, and national greenhouse gas inventories for forestry. It provides empirical evidence for carbon-oriented silviculture.
👥 読者別の含意
🔬研究者:Identifies research gaps and mechanisms for SOC sequestration in managed forests, useful for further studies.
🏢実務担当者:Forest managers can use findings on density and mixing to enhance carbon storage in plantations.
🏛政策担当者:Supports inclusion of forest management practices in carbon accounting frameworks and climate mitigation policies.
📄 Abstract（原文）
Chinese fir (Cunninghamia lanceolata) is one of the most important fast-growing timber species in southern China and plays a critical role in regional carbon sequestration and timber production. Soil organic carbon (SOC) is a key component of the terrestrial ecosystem carbon pool, and its content, composition, and stability directly affect soil fertility, ecosystem service functions, and the ability to cope with climate change. This review summarizes the mechanisms by which density regulation and conifer–broadleaf mixed forest management affect the content, fractions and stability of SOC in Chinese fir plantations. Density regulation changes stand structure, litterfall, and roots, which can impact soil microbial activity, litter decomposition, and mineralization of soil organic matter. Conifer–broadleaf mixed planting and broader mixed-forest reconstruction, through introducing functionally distinct tree species, can optimize stand microenvironments, increase species diversity, improve litter quantity and quality, and diversify root exudates. These changes further regulate soil organic carbon (SOC) accumulation and its physicochemical stability. Based on the latest literature reports, we demonstrate that mixed-species stands with a moderate broadleaf proportion significantly enhance SOC sequestration relative to pure stands, driven by improved litter quality and soil pH neutralization that promote microbial necromass formation and aggregate-associated carbon stabilization. Optimal density regulation complements these benefits by facilitating understory development and root carbon input. Current research indicates that both density reduction and species mixing, as two independent silvicultural measures, can individually enhance soil organic carbon (SOC) stability in Chinese fir plantations. This review identifies key research gaps and provides theoretical foundations for carbon-oriented sustainable management of Chinese fir plantations.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/f17070767first seen 2026-07-02 05:51:04
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