气候变化领域集成服务门户(CCPortal): Dynamics of informal risk sharing in collective index insurance

CCPortal

DOI	10.1038/s41893-020-00667-2
	Dynamics of informal risk sharing in collective index insurance
	Santos F.P.; Pacheco J.M.; Santos F.C.; Levin S.A.
发表日期	2021
ISSN	2398-9629
英文摘要	Extreme weather events often prevent low-income farmers from accessing high-return technologies that would enhance their productivity. As a result, they often fall into poverty traps, a problem likely to worsen as the frequency of weather disasters increases due to climate change. Insurance offers, in principle, a solution for this conundrum and a means to guarantee households’ wellbeing. Group collective index insurance constitutes an alternative to indemnity or individual index insurance, and has the potential to alleviate basis risk through within-group informal transfers. Here we show that collective index insurance introduces a coordination dilemma of insurance adoption: socially optimal outcomes are obtained when everyone adopts insurance; however, a minimum fraction of contributors is necessary before the effects of basis risk can be averaged out and individuals start taking up insurance. We further show that additional mechanisms—such as local peer monitoring and defector exclusion—are necessary to stabilize informal transfers and collective index insurance adoption. Together, collective index insurance and informal transfers may thus constitute a practical instrument to improve sustainability in developing countries. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Climate change; Developing countries; Risk management; Extreme weather events; Low incomes; Peer monitoring; Practical instruments; Risk-sharing; Wellbeing; Insurance
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163463
作者单位	Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, United States; Center for BioComplexity, Princeton Environmental Institute, Princeton University, Princeton, NJ, United States; CBMA and Departamento de Matemática e Aplicações, Universidade do Minho, Braga, Portugal; ATP-Group, IST-Taguspark, Porto Salvo, Portugal; INESC-ID and Instituto Superior Técnico, Universidade de Lisboa, IST-Taguspark, Porto Salvo, Portugal; Resources for the Future, Washington, DC, United States; Beijer Institute of Ecological Economics, Stockholm, Sweden; Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Santos F.P.,Pacheco J.M.,Santos F.C.,et al. Dynamics of informal risk sharing in collective index insurance[J],2021.
APA	Santos F.P.,Pacheco J.M.,Santos F.C.,&Levin S.A..(2021).Dynamics of informal risk sharing in collective index insurance.Nature Sustainability.
MLA	Santos F.P.,et al."Dynamics of informal risk sharing in collective index insurance".Nature Sustainability (2021).