GSTDTAP  > 资源环境科学
DOI10.1038/s41893-020-0560-3
Brazilian maize yields negatively affected by climate after land clearing
Spera, Stephanie A.1,2,3; Winter, Jonathan M.3,4; Partridge, Trevor F.4
2020-06-29
发表期刊NATURE SUSTAINABILITY
ISSN2398-9629
出版年2020
文章类型Article;Early Access
语种英语
国家USA
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.


Half of Brazil's tropical Cerrado savannah has been cleared for agropastoral use. Using models, this study finds that this clearing is degrading regional weather, reducing maize yields there.


领域资源环境
收录类别SCI-E ; SSCI
WOS记录号WOS:000544156000007
WOS关键词DRY-SEASON ; DEFORESTATION ; AMAZON ; CONSERVATION ; VARIABILITY ; EXPANSION ; EXTREMES ; CERRADO ; MODEL
WOS类目Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/281799
专题资源环境科学
作者单位1.Univ Richmond, Dept Geog & Environm, Richmond, VA 23173 USA;
2.Dartmouth Coll, Neukom Inst Computat Sci, Hanover, NH 03755 USA;
3.Dartmouth Coll, Dept Geog, Hanover, NH 03755 USA;
4.Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA
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Spera, Stephanie A.,Winter, Jonathan M.,Partridge, Trevor F.. Brazilian maize yields negatively affected by climate after land clearing[J]. NATURE SUSTAINABILITY,2020.
APA Spera, Stephanie A.,Winter, Jonathan M.,&Partridge, Trevor F..(2020).Brazilian maize yields negatively affected by climate after land clearing.NATURE SUSTAINABILITY.
MLA Spera, Stephanie A.,et al."Brazilian maize yields negatively affected by climate after land clearing".NATURE SUSTAINABILITY (2020).
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