ヨーロッパ の 森林 管理 は 気候 温暖化 を 緩和 し ませ ん
Kim Naudts1, Yiying Chen1, Matthew J McGrath1
1Laboratoire des Sciences du Climat et de l'Environnement-Institut Pierre Simon Laplace, Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint Quentin, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.
まとめ
木材の採掘によって ヨーロッパの森林は大きな炭素負債を累積しています 森林化の努力にもかかわらずです 現在の森林管理は 気候を冷却できず 緩和戦略に挑戦しています
科学分野:
- 気候科学
- 森林の生態学
- 環境科学
背景:
- 森林伐採と森林管理は 気候変動の緩和策として広く受け入れられています
- 1750年以降のヨーロッパにおける 森林管理の歴史的慣行は 気候への実際の影響について 精査されています
研究 の 目的:
- 植林と木材採掘を含む欧州の森林管理が1750年以降に気候に及ぼす影響を定量化する.
- 放射能の不均衡と温度変化における植林と種の転換の役割を評価する.
主な方法:
- 1750年以降の欧州の森林における炭素の蓄積と損失の分析
- 森林管理慣行に起因する放射線不均衡と大気境界層の温度変化のモデル化
主要な成果:
- 木材の採取による炭素負債は 3.1ペタグラムで 森林化の恩恵を上回ります
- 植林により放射能の不均衡が0.12W/m2増加し,種転換により夏の境界層の温度が0.12K上昇した.
- 2.5世紀に渡るヨーロッパにおける森林管理は 気候の冷却に繋がっていません
結論:
- 現在の植林と森林管理の戦略は 意図されたように 気候変動を効果的に緩和できないかもしれません
- すべての林業活動が気候変動の緩和に寄与するわけではないことを認識することは,効果的な政策開発に不可欠です.
- 気候の冷却の目標と整合するためには,欧州の森林管理慣行の再評価が必要である.
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