气候变化领域集成服务门户(CCPortal): Net benefits to US soy and maize yields from intensifying hourly rainfall

CCPortal

DOI	10.1038/s41558-020-0830-0
	Net benefits to US soy and maize yields from intensifying hourly rainfall
	Lesk C.; Coffel E.; Horton R.
发表日期	2020
ISSN	1758-678X
起始页码	819
结束页码	822
卷号	10 期号:9
英文摘要	Many varieties of short-duration extreme weather pose a threat to global crop production, food security and farmer livelihoods1–4. Hourly exposure to extreme heat has been identified as detrimental to crop yields1,5; however, the influence of hourly rainfall intensity and extremes on yields remains unknown4,6,7. Here, we show that while maize and soy yields in the United States are severely damaged by the rarest hourly rainfall extremes (≥50 mm hr−1), they benefit from heavy rainfall up to 20 mm hr−1, roughly the heaviest downpour of the year on average. We also find that yields decrease in response to drizzle (0.1–1 mm hr−1), revealing a complex pattern of yield sensitivity across the range of hourly intensities. We project that crop yields will benefit by ~1–3% on average due to projected future rainfall intensification under climate warming8,9, slightly offsetting the larger expected yield declines from excess heat, with the benefits of more heavy rainfall hours outweighing the damages due to additional extremes. Our results challenge the view that an increasing frequency of high-intensity rainfall events poses an unequivocal risk to crop yields2,7,10 and provide insights that may guide adaptive crop management and improve crop models. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	climate change; crop production; crop yield; food security; livelihood; maize; precipitation intensity; rainfall; soybean; warming; United States; Zea mays
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/142133
作者单位	Lamont–Doherty Earth Observatory, Palisades, NY, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; Neukom Institute, Dartmouth College, Hanover, NH, United States; Department of Geography, Dartmouth College, Hanover, NH, United States
推荐引用方式 GB/T 7714	Lesk C.,Coffel E.,Horton R.. Net benefits to US soy and maize yields from intensifying hourly rainfall[J],2020,10(9).
APA	Lesk C.,Coffel E.,&Horton R..(2020).Net benefits to US soy and maize yields from intensifying hourly rainfall.Nature Climate Change,10(9).
MLA	Lesk C.,et al."Net benefits to US soy and maize yields from intensifying hourly rainfall".Nature Climate Change 10.9(2020).