気候変動の1.5°Cと2°Cの目標を達成することを妨げる
Michael A Clark1, Nina G G Domingo2, Kimberly Colgan2
1Oxford Martin School and Nuffield Department of Population Health, University of Oxford, Oxford, UK. michael.clark@ndph.ox.ac.uk.
まとめ
化石燃料の排出を止めても 1.5°Cの目標を達成できません 気候変動の目標を達成するには,非食糧セクターと並行して,世界的な食糧システムに大きな変化が必要です.
科学分野:
- 気候科学
- 環境科学
- 食糧システム分析
背景:
- パリ協定は,世界の気温上昇を工業化以前の水準より1.5°Cまたは2°Cに制限することを目指しています.
- 特に化石燃料による温室効果ガス排出量の削減は,これらの気候目標の達成に不可欠です.
研究 の 目的:
- パリ協定の気候目標の達成に対する世界的な食糧システムの影響を評価する.
- 化石燃料の排出から独立して,気候変動の目標を達成するために必要な食糧システムの変更を決定する.
主な方法:
- 温室効果ガスの排出量に対する現在の食糧システム動向の影響をモデル化
- 食品部門と非食品部門の両方の排出削減シナリオを分析する.
主要な成果:
- 1.5°Cの目標を達成するのは 現在の世界の食糧システムの傾向だけで困難です
- 化石燃料の排出が続けば 20世紀末までに 2°Cの目標が 脅かされるでしょう
- 1.5°Cの目標を達成するには,食品システムを含むすべてのセクターで迅速で野心的な変化が必要になります.
結論:
- 食糧システムは,地球規模の気候目標を達成する上で, 重要な,しばしば過小評価されている障壁です.
- 気候変動の緩和には 化石燃料の排出量削減と同じくらい 食料生産と消費の大幅な変化が不可欠です
- 気候変動の目標を達成するには,すべてのセクターからの排出量に対処する全体的なアプローチが必要で,食糧システムが中心的な役割を果たします.
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