バイオ燃料による間接的な排出量:重要度?
Jerry M Melillo1, John M Reilly, David W Kicklighter
1The Ecosystems Center, Marine Biological Laboratory (MBL), 7 MBL Street, Woods Hole, MA 02543, USA. jmelillo@mbl.edu
Science (New York, N.Y.)
|November 26, 2009
まとめ
グローバルなセルロース生物エネルギープログラムの拡大は,土地利用の変化による温室効果ガスの排出量を増加させる可能性があります. 森林を保護し,窒素肥料の使用を最適化することは,これらのバイオ燃料生産排出量を軽減する鍵です.
科学分野:
- 環境科学 環境科学
- 気候科学 気候科学
- 農業科学 農業科学とは
背景:
- グローバルなバイオ燃料プログラムは,土地供給の圧力に直面しています.
- バイオ燃料による土地利用の変化は,温室効果ガスの排出量を増加させる可能性があります.
研究 の 目的:
- 地球規模のセルロース基生物エネルギープログラムによる温室効果ガス排出量に対する直接的・間接的な土地利用の変化の影響を調査する.
- 21世紀における影響を評価するためです.
主な方法:
- リンクされた経済と地上の生地化学モデルを利用した.
- 拡張されたグローバルなセルロース生物エネルギープログラムによる土地利用の潜在的な変化を分析した.
主要な成果:
- 間接的な土地利用は,直接的な土地利用 (最大2倍) よりもはるかに多くの炭素の損失を引き起こすと予測されています.
- 肥料の使用量の増加による酸化窒素の排出は,炭素の損失よりも温暖化の可能性にとってより重要であると予測されています.
- 森林を保護し,窒素肥料の使用のベストプラクティスを促進するグローバルな政策は,バイオ燃料生産の排出量を大幅に削減することができます.
結論:
- バイオ燃料の拡大は,気候変動の影響を軽減するために,土地利用の管理を慎重にする必要がある.
- 森林保護と窒素肥料管理に焦点を当てた政策介入は,持続可能なバイオ燃料生産に不可欠です.
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