1997年にインドネシアで発生した泥炭や森林火災で放出された炭素の量
Susan E Page1, Florian Siegert, John O Rieley
1Department of Geography, University of Leicester, Leicester LE1 7RH, UK. sep5@le.ac.uk
Nature
|November 8, 2002
まとめ
熱帯の泥炭地帯は,気候変動の安定に不可欠な膨大な炭素貯蔵庫を蓄積しています. 1997年にインドネシアの泥炭地帯で発生した火災により,大量の炭素が放出され,世界の大気中の二酸化炭素濃度に影響を与えました.
科学分野:
- 環境科学 環境科学
- 気候科学 気候科学
- エコロジー エコロジー エコロジー
背景:
- 熱帯の泥炭地帯は,地球上の重要な炭素吸収源である.
- 泥炭沼林は,排水と森林伐採によって脅かされています.
- 1997年のエルニーニョ現象は,インドネシアの泥炭地帯で大規模な火災を引き起こした.
研究 の 目的:
- 1997年のインドネシアの泥炭地帯の火災による炭素排出量を定量化するために.
- これらの排出が世界の炭素サイクルに与える影響を評価する.
主な方法:
- カリマンタン中部の250万ヘクタール面積の衛星画像分析.
- 泥炭の燃焼深さの地上測定. 泥炭の燃焼深さの地上測定. 泥炭の燃焼深さの地上測定. 泥炭の燃焼深さの地上測定.
- 発見をインドネシアの島全体に拡張する.
主要な成果:
- 研究区域の32%が火災で焼失し,91.5%が泥炭地帯だった.
- 泥炭の燃焼により,推定0.190.23ギガトンの炭素が放出されました.
- 1997年のインドネシアの泥炭や植物の火災による炭素の総排出量は0.81から2.57ギガトンであった.
結論:
- 1997年のインドネシアの泥炭地帯の火災は,世界の炭素排出量の主要な源でした.
- これらの排出量は,世界の年間化石燃料排出量の13~40%を占めています.
- この火災は,大気中のCO2濃度が記録的に増加した最大の原因となった.
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