熱帯地域の森林伐採による炭素排出量の基準地図
Nancy L Harris1, Sandra Brown, Stephen C Hagen
1Ecosystem Services Unit, Winrock International, Arlington, VA 22202, USA. nharris@winrock.org
まとめ
森林伐採による炭素排出量の正確な推定は,政策にとって極めて重要です. この研究は,衛星データを用いて,熱帯雨林の炭素排出量を統計的に制限し,グローバルなモニタリングのためのより信頼性の高い基準を提供しています.
科学分野:
- 環境科学 環境科学
- リモートセンシングによる遠隔感知
- 気候変動に関する研究
背景:
- 森林伐採の排出量を軽減するための効果的な政策には,正確な炭素影響データが必要です.
- 現在の方法は,しばしば広範な仮定や不確実なデータに依存し,精度を制限しています.
研究 の 目的:
- 熱帯森林伐採による炭素排出量の統計的に限定され,空間的に明示的な見積もりを作成する.
- 衛星観測と詳細な炭素蓄積データを統合することにより,既存の方法を改善する.
主な方法:
- 衛星観測を用いて,熱帯地域 (2000~2005年) 全体の森林面積の総損失をマッピングした.
- 森林の炭素貯蔵の地図と森林喪失のデータを統合しました.
- 統計的に制限された予測間隔で計算された総炭素排出量.
主要な成果:
- 2000~2005年の熱帯森林伐採による年間総炭素排出量は0.81ペタグラムと推定されています.
- 年間0.57〜1.22ペタグラムの炭素の90%の予測区間を提供した.
- 結果は,最近発表されたいくつかの推定値より25〜50%低い.
結論:
- 洗練された見積もりは,森林破壊による排出量のモニタリングのためのより正確な基準を提供します.
- 改善されたデータは,森林伐採による排出量を削減するためのより情報に基づいた政策をサポートします.
- 森林喪失地域と,クリア前の炭素貯蔵地の体系的なマッチングは,モニタリング能力を強化します.
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