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中国における空間最適化された植林戦略による炭素吸収源の強化
Yanli Dong1, Zhen Yu2,3,4, Thomas Pugh5
1State Key Laboratory of Climate System Prediction and Risk Management, Nanjing University of Information Science and Technology, Nanjing, China.
Nature communications
|January 12, 2026
まとめ
中国
科学分野:
- 林業と生態学
- 気候変動緩和
- 炭素隔離
背景:
- 中国は、炭素隔離のために2050年までに4950万ヘクタールの森林拡大を目指しています。
- 現在の炭素便益の推定では、環境ストレス要因による樹木の死亡率を高める「森林縁辺」効果が見過ごされがちです。
研究 の 目的:
- バイオマス炭素貯留に対する森林縁辺効果の影響を定量化すること。
- これらの負の縁辺効果を最小限に抑えるための植林の空間最適化戦略を開発すること。
主な方法:
- バイオマス炭素貯留に対する森林近接性の影響を分析しました。
- 縁辺効果を軽減するための植林の空間最適化モデルを開発しました。
主要な成果:
- 森林の縁辺部はバイオマス炭素貯留を著しく減少させます。
- 最適化された植林戦略は、2060年までに炭素獲得量を51%（986 ± 22 Tg）増加させます。
- 縁辺効果の低減が、総炭素獲得量の約半分を占めます。
結論:
- 森林縁辺効果を無視すると、炭素吸収源の潜在能力を過大評価する可能性があります。
- 空間的に最適化された植林は、気候緩和と生態学的利益を最大化するために不可欠です。
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