气候变化领域集成服务门户(CCPortal): Spatiooral variation of crop loss in the United States from 2001 to 2016

CCPortal

DOI	10.1088/1748-9326/ab1ac9
	Spatiooral variation of crop loss in the United States from 2001 to 2016
	Reyes J.J.; Elias E.
发表日期	2019
ISSN	17489318
卷号	14 期号:7
英文摘要	Crop insurance loss data can illuminate variations in agricultural impacts from exposure to weather and climate-driven events, and can improve our understanding of agricultural vulnerabilities. Here we perform a retrospective analysis of weather and climate-driven reasons for crop loss (i.e. cause of loss) obtained from the Risk Management Agency of the United States Department of Agriculture. The federal crop insurance program has insured over $440 billion in liabilities representing farmers' crops from 2001 to 2016. Specifically, we examine the top ten weather and climate-driven causes of loss from 2001 to 2016 across the nation comprising at least 83% of total indemnities (i.e. insurance payouts provided to farmers after crop loss events). First, we analyzed the relative fraction of indemnities by causes of loss, over different spatial and temporal resolutions. We found that drought and excess precipitation comprised the largest sources of crop loss across the nation. However, these causes varied strongly over space and time. We applied two additional normalization techniques to indemnities using (1) insurance premia and the gross domestic product implicit price deflator, and (2) liabilities to calculate the loss cost. We conducted trend analyses using the Mann-Kendall statistical test on loss cost over time. Differential trends and patterns in loss cost demonstrated the importance of spatiooral resolution in assessing causes of loss. The majority of monthly significant trends (p < 0.05) showed increasing loss cost (i.e. increasing indemnities or decreasing liabilities) in response to weather events. Finally, we briefly discuss an online portal (AgRisk Viewer) to make these data accessible at multiple spatial scales and sub-annual time steps to support both research and outreach efforts promoting adaptation and resilience in agricultural systems. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	adaptation; agriculture; climate change; Crop insurance; drought; extreme weather; vulnerability
语种	英语
scopus关键词	Agriculture; Climate change; Cost benefit analysis; Drought; Insurance; Online systems; Risk assessment; Risk management; adaptation; Crop insurance; Extreme weather; Gross domestic products; Retrospective analysis; Spatial and temporal resolutions; United states department of agricultures; vulnerability; Crops
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154506
作者单位	Southwest Climate Hub, Agricultural Research Service - Jornada Experimental Range, United States Department of Agriculture, United States
推荐引用方式 GB/T 7714	Reyes J.J.,Elias E.. Spatiooral variation of crop loss in the United States from 2001 to 2016[J],2019,14(7).
APA	Reyes J.J.,&Elias E..(2019).Spatiooral variation of crop loss in the United States from 2001 to 2016.Environmental Research Letters,14(7).
MLA	Reyes J.J.,et al."Spatiooral variation of crop loss in the United States from 2001 to 2016".Environmental Research Letters 14.7(2019).