Brazilian maize yields negatively affected by climate after land clearing
Brazilian maize yields negatively affected by climate after land clearing
复制标题
土地清理后巴西玉米产量受到气候负面影响
DOI:
10.1038/s41893-020-0560-3
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发表时间:
2020
影响因子:
27.6
通讯作者:
Partridge, Trevor F.
中科院分区:
文献类型:
--
作者:
Spera, Stephanie A.;Winter, Jonathan M.;Partridge, Trevor F.
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.
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DOI:
10.1007/978-1-4020-5195-1
发表时间:
2019-03
期刊:
Mathematical Models in Science
影响因子:
--
作者:
通讯作者:
--
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
S. Spera
通讯作者:
S. Spera
影响因子:
5.2
作者:
G. Pires;M. H. Costa
通讯作者:
M. H. Costa
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
W. Jepson;C. Brannstrom;A. Filippi
通讯作者:
A. Filippi
影响因子:
6.7
作者:
L. J. Oliveira;M. H. Costa;B. Soares-Filho;M. Coe
通讯作者:
L. J. Oliveira;M. H. Costa;B. Soares-Filho;M. Coe