气候变化领域集成服务门户(CCPortal): Brazilian maize yields negatively affected by climate after land clearing

CCPortal

DOI	10.1038/s41893-020-0560-3
	Brazilian maize yields negatively affected by climate after land clearing
	Spera S.A.; Winter J.M.; Partridge T.F.
发表日期	2020
ISSN	2398-9629
起始页码	845
结束页码	852
卷号	3 期号:10
英文摘要	Over 50% of the Brazilian Cerrado has been cleared, predominantly for agropastoral purposes. Here, we use the Weather Research and Forecasting model to run 15-year climate simulations across Brazil with six land-cover scenarios: (1) before extensive land clearing, (2) observed in 2016, (3) Cerrado replaced with single-cropped (soy) agriculture, (4) Cerrado replaced with double-cropped (soy–maize) agriculture, (5) eastern Amazon replaced with single-cropped agriculture and (6) eastern Amazon replaced with double-cropped agriculture. All land-clearing scenarios (2–6) contain significantly more growing season days with temperatures that exceed critical temperature thresholds for maize. Evaporative fraction significantly decreases across all land-clearing scenarios. Altered weather reduces maize yields between 6% and 8% compared with the before-extensive-land-clearing scenario; however, soy yields were not significantly affected. Our findings provide evidence that land clearing has degraded weather in the Brazilian Cerrado, undermining one of the main reasons for land clearing: rain-fed crop production. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Agricultural robots; Climate models; Cultivation; Brazilian cerrado; Climate simulation; Critical temperatures; Crop production; Eastern amazons; Evaporative fraction; Growing season; Weather research and forecasting models; Weather forecasting
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/163499
作者单位	Department of Geography and Environment, University of Richmond, Richmond, VA, United States; Neukom Institute for Computational Science, Dartmouth College, Hanover, NH, United States; Department of Geography, Dartmouth College, Hanover, NH, United States; Department of Earth Science, Dartmouth College, Hanover, NH, United States
推荐引用方式 GB/T 7714	Spera S.A.,Winter J.M.,Partridge T.F.. Brazilian maize yields negatively affected by climate after land clearing[J],2020,3(10).
APA	Spera S.A.,Winter J.M.,&Partridge T.F..(2020).Brazilian maize yields negatively affected by climate after land clearing.Nature Sustainability,3(10).
MLA	Spera S.A.,et al."Brazilian maize yields negatively affected by climate after land clearing".Nature Sustainability 3.10(2020).