农业食品三阶段价值链中的减排战略:一个动态差异化的游戏方法
Huanhuan Wang1, Xiaoli Fan2, Qilan Zhao1
1School of Economics and Management, Beijing Jiaotong University, Beijing, China.
PloS one
|November 17, 2023
概括
农业食品价值链中的合作战略显著提高了温室气体 (GHG) 排放的减少和利能力. 合作为所有参与者带来了最大的减排和经济收益.
科学领域:
- 环境经济学环境经济学
- 农业科学 农业科学
- 游戏理论 游戏理论
背景情况:
- 农业食品系统占全球温室气体排放量的31%,需要大幅减少才能实现"巴黎协定"的目标.
- 农业食品价值链中的减排受到参与者之间利益和成本分配不平衡的挑战.
- 从价值链的角度来看,关于农业食品排放量减少的研究有限,特别是在长期战略中使用动态模型.
研究的目的:
- 调查农业食品价值链参与者之间的合作对纠正利益/成本错误分配的影响.
- 研究这些合作如何影响农业食品价值链内的长期减排战略.
- 量化不同协作机制对减排和利能力的影响.
主要方法:
- 开发一个动态的差异性游戏模型,用于三阶段的农业食品价值链.
- 使用汉密尔顿 - 雅各比 - 贝尔曼方程,推导纳什平衡减排策略.
- 数字和灵敏度分析以验证模型和发现.
主要成果:
- 协作机制导致整个价值链的减排努力和利增加.
- 合作机制实现了比非合作方法减少排放量的近三倍.
- 合作策略导致价值链总体利最高,超过非合作和成本共享分别为37%和16%.
结论:
- 农业食品价值链参与者之间的合作对于有效的减排和经济效益至关重要.
- 政策制定者和行业利益相关者应促进合作战略,以提高农业食品系统的可持续性.
- 该研究为分析和激励减排合作提供了一个动态框架.
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