气候变化领域集成服务门户(CCPortal): Large-scale commodity agriculture exacerbates the climatic impacts of Amazonian deforestation

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DOI	10.1073/pnas.2023787118
	Large-scale commodity agriculture exacerbates the climatic impacts of Amazonian deforestation
	Maeda E.E.; Abera T.A.; Siljander M.; Aragão L.E.O.C.; de Moura Y.M.; Heiskanen J.
发表日期	2021
ISSN	00278424
卷号	118 期号:7
英文摘要	In the Amazon rainforest, land use following deforestation is diverse and dynamic. Mounting evidence indicates that the climatic impacts of forest loss can also vary considerably, depending on specific features of the affected areas. The size of the deforested patches, for instance, was shown to modulate the characteristics of local climatic impacts. Nonetheless, the influence of different types of land use and management strategies on the magnitude of local climatic changes remains uncertain. Here, we evaluated the impacts of large-scale commodity farming and rural settlements on surface temperature, rainfall patterns, and energy fluxes. Our results reveal that changes in land–atmosphere coupling are induced not only by deforestation size but also, by land use type and management patterns inside the deforested areas. We provide evidence that, in comparison with rural settlements, deforestation caused by large-scale commodity agriculture is more likely to reduce convective rainfall and increase land surface temperature. We demonstrate that these differences are mainly caused by a more intensive management of the land, resulting in significantly lower vegetation cover throughout the year, which reduces latent heat flux. Our findings indicate an urgent need for alternative agricultural practices, as well as forest restoration, for maintaining ecosystem processes and mitigating change in the local climates across the Amazon basin. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Land use \| deforestation \| agricultural expansion \| Amazon forest \| regional climate
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180632
作者单位	Department of Geosciences and Geography, University of Helsinki, Helsinki, FI-00014, Finland; Institute for Atmospheric and Earth System Research, Faculty of Science, University of Helsinki, Helsinki, FI-00014, Finland; Earth Observation and Geoinformatics Division, National Institute for Space Research, São José dos Campos, SP, 12227-010, Brazil; College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4RJ, United Kingdom; Centre for Landscape and Climate Research, School of Geography, Geology and Environment, University of Leicester, Leicester, LE1 7RH, United Kingdom
推荐引用方式 GB/T 7714	Maeda E.E.,Abera T.A.,Siljander M.,et al. Large-scale commodity agriculture exacerbates the climatic impacts of Amazonian deforestation[J],2021,118(7).
APA	Maeda E.E.,Abera T.A.,Siljander M.,Aragão L.E.O.C.,de Moura Y.M.,&Heiskanen J..(2021).Large-scale commodity agriculture exacerbates the climatic impacts of Amazonian deforestation.Proceedings of the National Academy of Sciences of the United States of America,118(7).
MLA	Maeda E.E.,et al."Large-scale commodity agriculture exacerbates the climatic impacts of Amazonian deforestation".Proceedings of the National Academy of Sciences of the United States of America 118.7(2021).