重新设计生态系统服务支付,以提高成本效益
Santiago Izquierdo-Tort1, Seema Jayachandran2, Santiago Saavedra3
1Instituto de Investigaciones Económicas, Universidad Nacional Autónoma de México, Mexico City, Mexico. santiago.izquierdo@comunidad.unam.mx.
Nature communications
|October 27, 2024
概括
与传统合同相比,生态系统服务 (PES) 合同的全额注册支付显著减少了41%的森林砍伐. 这种简单的修改使计划的成本效益增加了四倍,提高了保护成果.
科学领域:
- 环境经济学环境经济学
- 保护科学 保护科学
- 森林管理 森林管理
背景情况:
- 对生态系统服务 (PES) 的支付对于保护激励措施至关重要,比如避免森林砍伐.
- 虽然研究了PES的有效性,但通过修改优化程序设计的研究较少.
研究的目的:
- 评估修改后的 PES 合同是否要求完全登记森林,与传统的部分登记合同相比,改善了保护结果.
- 评估合同设计对森林砍伐率和计划成本效益的影响.
主要方法:
- 在墨西哥进行了一项随机试验.
- 我们比较了一份"全额注册"的PES合同与允许选择性地块注册的"传统"的PES合同.
- 测量了森林砍伐速度和计算的成本效益.
主要成果:
- 与传统合同相比,全额注册的PES合同减少了41%的森林砍伐 (p=0.01).
- 这一修改使PES计划的成本效益增加了四倍.
- 阻止了已经被定为保护的地块的战略注册.
结论:
- 在PES合同设计中进行简单的修改,例如要求完全登记森林,可以大大提高保护效率.
- 优化 PES 设计是提高保护支付效率和成本效益的关键.
- 这项研究提供了通过合同调整改善保护支付计划的证据.
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