"グローバル緩和投資における公平性の検討"に関する技術的コメント
Gregor Semieniuk1, Jayati Ghosh1, Nancy Folbre1
1Political Economy Research Institute and Department of Economics, University of Massachusetts Amherst, Amherst, MA 01003, USA.
まとめ
開発途上国のグローバル投資能力の見積もりは過大評価されています. 購買力対価ではなく 市場為替レートを用いると 気候変動対策への投資のための 国際的な資金の必要性が 大きくなります
科学分野:
- 環境経済学
- 気候変動への資金提供
- 国際開発
背景:
- パチャウリ ほか (2022) グローバル緩和投資の公平な地域シェアを分析しました.
- この研究では,購買力対価 (PPP) に調整されたGDPを用いて開発途上国の投資能力を推定した.
研究 の 目的:
- パチャウリ等が用いた方法論を批判する. 開発途上国の投資能力について
- 市場為替レートに基づく地域間金融流の見直しを主張する.
主な方法:
- 国際金融流のGDP推定方法の分析
- 購買力対価 (PPP) の為替レートと投資商品の市場為替レートの比較
主要な成果:
- PPPの為替レートを用いてGDPを推定すると,開発途上国の投資能力を大幅に過大評価する.
- 国際的に調達された投資商品のMERを使用すると,能力に基づく地域間資金の流れは大幅に大きくなります.
結論:
- Pachauri et al.の方法論について 開発途上国の投資能力が膨らんでいる.
- 気候変動資金のニーズを正確に評価するには,国際取引の為の市場為替レートを使用する必要があります.
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