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森林火災の規模は火災後の地表の温暖化を増幅する
Jie Zhao1,2,3, Chao Yue4,5,6, Jiaming Wang1
1College of Natural Resources and Environment, Northwest A & F University, Yangling, China.
Nature
|September 25, 2024
まとめ
大規模な森林火災は 火災後の温暖化を増幅します 特に針葉樹林ではそうです 広葉の木を増やすことで 気候変動の影響を軽減し 森林の再生を促すことができます
科学分野:
- 気候科学
- 林業
- エコロジー
背景:
- 気候の温暖化により 極端な火事天候が起こり 世界中でより大きく 長く続く森林火事が発生します
- 森林火災は陸地と大気間のフィードバックによって 気候に大きな影響を及ぼします
- 火災の拡大による地表気候効果とその土地管理への影響については,さらなる調査が必要である.
研究 の 目的:
- 森林火災の規模が火災後の地表温暖化に与える影響を調査する.
- 火による温暖化に 木の種類がどう影響するかを調べるため
- 森林生態系と気候フィードバックへの火災による温暖化の影響を評価する.
主な方法:
- 温帯および北極の森林における陸地表面温度変化を分析するために衛星観測を用いた.
- 火災の規模と 10年間の火災後の夏の温暖化との関係を定量化しました
- 温暖化の増幅に対する広葉樹と針葉樹の多さの影響を調査した.
主要な成果:
- 火災の大きさは,火災後の10年間の夏の土地表面温暖化を,燃えた面積単位ごとに持続的に増幅していることが判明しました.
- 広葉樹の割合が増加すると 温暖化の幅が縮小します
- 針葉樹の森林は 広い葉のある森林と比較して 温暖化の増幅を示しています
結論:
- 火災による温暖化は火災後の再生の成功と構成,そして永久凍土の安定性に影響を与えます.
- これらの効果は 将来の気候と火災のダイナミクスのために 大きく過小評価されたフィードバックループを表しています
- 大規模な火災に伴う気候リスクの軽減には,広葉樹の割合を増やすなど,気候に配慮した林業戦略が不可欠です.
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