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Updated: Jul 10, 2026

06:27
Simulating Impacts of Ice Storms on Forest Ecosystems
Published on: June 30, 2020
ハリケーン・カトリーナのカーボンフットプリントは,米国湾岸の森林に
Jeffrey Q Chambers1, Jeremy I Fisher, Hongcheng Zeng
1Ecology and Evolutionary Biology, Tulane University, 400 Lindy Boggs, New Orleans, LA 70118, USA. chambers@tulane.edu
まとめ
ハリケーンカトリーナは,米国の湾岸沿岸の森林を破壊し,3億2000万本の樹木を殺し,105テラグラムの炭素を放出しました. この大きな森林の炭素損失は,米国の炭素吸収に影響を及ぼします.
科学分野:
- 森林生態学 森林生態学 森林生態学
- 気候変動科学 気候変動科学
- リモートセンシング (リモートセンサー)
背景:
- ハリケーン・カトリーナは,米国の湾岸沿岸の森林に広範な被害をもたらしました.
- 森林の生態系は,炭素の吸収に重要な役割を果たしています.
- 気候変動は,極端な天候現象の頻度と強度を増加させると予測されています.
研究 の 目的:
- ハリケーン・カトリーナの米国湾岸沿岸の森林構造と炭素貯蔵量への影響を定量化するために.
- 米国の炭素予算における森林破壊の役割を評価する.
- 気候変動,嵐活動,森林の炭素動態の間の潜在的なフィードバックメカニズムを理解する.
主な方法:
- エコロジカルフィールド研究の統合と衛星画像分析 (LandsatとMODIS).
- 樹木の死亡率と樹木の損傷を予測するための実証的モデルの開発.
- 空間的に明示的な森林破壊マップの作成.
主要な成果:
- 約3億2000万本の大型木が死亡または重度の構造被害に遭いました.
- 推定105テラグラムの炭素が樹木の損傷と死亡により放出されました.
- 炭素の損失は,米国の森林樹の年間純炭素吸収量の50~140パーセントを占めています.
結論:
- ハリケーンによる森林破壊は,米国の炭素予算に大きな影響を及ぼします.
- 気候変動による嵐の活動の増加は,森林のバイオマスの減少と生態系呼吸の増加につながる可能性があります.
- 森林の炭素ダイナミクスは,温暖化する気候でポジティブなフィードバックメカニズムとして作用し,大気中の二酸化炭素の上昇を加速させる可能性があります.
関連する概念動画
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