熱帯雨林の再生を加速する
Christopher D Philipson1,2, Mark E J Cutler1, Philip G Brodrick3
1School of Social Sciences, University of Dundee, Dundee DD1 4HN, UK. christopher.philipson@usys.ethz.ch m.e.j.cutler@dundee.ac.uk.
まとめ
熱帯雨林の回復は,地上の炭素密度 (ACD) の回復を大幅に促進します. 炭素価格がパリ協定の目標に合致すると 回復は経済的に実行可能になり 生物多様性と気候目標に 貢献します
科学分野:
- エコロジー
- 気候科学
- 林業
背景:
- 熱帯雨林の半分以上は 劣化しており 生物多様性と炭素の喪失が 危険にさらされています
- 人間による影響により 森林は農業用プランテーションに 転換される恐れがあります
- 森林の回復を加速させるための 解決策を提示しています
研究 の 目的:
- 自然に再生する熱帯森林と,活発に再生された熱帯森林における地上の炭素密度 (ACD) の回復率を比較する.
- 熱帯雨林の回復の経済的可能性を評価する.
主な方法:
- ACDの回復率の長期比較
- 復旧コストと炭素価格の分析
主要な成果:
- アクティブ・リスタレーションにより,10年後のACDの回復率が50%以上上昇しました (2. 9~4. 4Mg ha−1 yr−1).
- 現在の復旧コストは 経済的正当性のために 高い炭素価格を必要とします
- パリ協定に準拠した炭素価格 (40~80ドル/tCO2e) は復旧投資を正当化します.
結論:
- 熱帯雨林の炭素吸収を 劇的に加速させています
- 経済的なインセンティブ,特に炭素価格設定は 修復の普及に不可欠です.
- 熱帯雨林の回復は気候変動の緩和と生物多様性の保全の重要な戦略です.
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