Exploring the Payoff Mechanism of REDD+ Call Options: A Tropical Country Perspective
REDD+コール・オプションのペイオフ・メカニズムの探求：熱帯諸国の視点から (AI 翻訳)
Hyunsung Cho, Yohan Lee
🤖 gxceed AI 要約
日本語
熱帯諸国におけるREDD+コール・オプションのペイオフを評価。ブラック・ショールズモデルと幾何ブラウン運動を用いて、企業にとって合理的な投資戦略である一方、熱帯諸国には損失が生じやすいことを示した。高ボラティリティ下での限定的な利益や低ボラティリティ下での不十分な前払い金など、実用上の課題を指摘し、カバード・コールなどの代替戦略を提案している。
English
This study evaluates REDD+ call options from the perspective of tropical countries using the Black-Scholes model and geometric Brownian motion. It finds that while such options are rational for corporate investors, tropical countries are prone to losses. The payoff resembles a short straddle, offering limited benefits under high volatility and insufficient upfront payments under low volatility. Alternatives like covered calls are suggested.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本はREDD+への直接関与は限定的だが、JCMや二国間クレジット制度を通じた間接的な関連がある。本稿の指摘は、カーボンクレジットの調達リスク管理に示唆を与える。
In the global GX context
REDD+ call options are part of the broader carbon credit market, which is central to global climate finance. This paper highlights risks for host countries, contributing to the debate on fair and effective carbon trading mechanisms under Article 6 of the Paris Agreement.
👥 読者別の含意
🔬研究者:Provides a theoretical framework for evaluating option-based carbon credit mechanisms.
🏢実務担当者:Offers insights for companies and investors considering REDD+ call options as part of carbon offset strategies.
🏛政策担当者:Highlights potential downsides for tropical countries, informing policy design for carbon market participation.
📄 Abstract（原文）
Abstract The risks associated with carbon credit transactions discourage private investment in Reducing Emissions from Deforestation and forest Degradation in tropical countries (REDD+) and reduce incentives for forest conservation in tropical countries. REDD+ call options have been proposed as a carbon trading mechanism that reduces uncertainty and attracts private investment. Meanwhile, assessing their rationale for tropical nations remains limited. This study evaluated the payoffs of REDD+ call option contracts from the perspective of tropical countries. Using the Black-Scholes model, we identified strike prices and option prices that offset the costs of REDD+. Then we simulated carbon prices with geometric Brownian motion to examine option payoffs. The revealed payoff suggests that tropical countries are prone to losses under the REDD+ call option, although it represents a rational investment strategy for corporations. A short straddle-like payoff diagram suggests limited benefits under high market volatility, while even low volatility also fails to make the mechanism attractive due to insufficient upfront payments. Robustness checks using a Merton jump–diffusion process also confirmed that these qualitative payoff patterns persist under more realistic carbon price dynamics. To increase the practical applicability, we proposed alternative strategies such as covered call options. The study concludes that REDD+ call options should be adopted cautiously and complemented by appropriate risk management measures.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1080/21580103.2025.2609596first seen 2026-05-15 17:25:51
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