气候变化领域集成服务门户(CCPortal): Pre-Columbian fire management and control of climate-driven floodwaters over 3,500 years in southwestern Amazonia

CCPortal

DOI	10.1073/pnas.2022206118
	Pre-Columbian fire management and control of climate-driven floodwaters over 3,500 years in southwestern Amazonia
	Duncan N.A.; Loughlin N.J.D.; Walker J.H.; Hocking E.P.; Whitney B.S.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:40
英文摘要	In landscapes that support economic and cultural activities, human communities actively manage environments and environmental change at a variety of spatial scales that complicate the effects of continental-scale climate. Here, we demonstrate how hydrological conditions were modified by humans against the backdrop of Holocene climate change in southwestern Amazonia. Paleoecological investigations (phytoliths, charcoal, pollen, diatoms) of two sediment cores extracted from within the same permanent wetland, ∼22 km apart, show a 1,500-y difference in when the intensification of land use and management occurred, including raised field agriculture, fire regime, and agroforestry. Although rising precipitation is well known during the mid to late Holocene, human actions manipulated climate-driven hydrological changes on the landscape, revealing differing histories of human landscape domestication. Environmental factors are unable to account for local differences without the mediation of human communities that transformed the region to its current savanna/forest/wetland mosaic beginning at least 3,500 y ago. Regional environmental variables did not drive the choices made by farmers and fishers, who shaped these local contexts to better manage resource extraction. The savannas we observe today were created in the post-European period, where their fire regime and structural diversity were shaped by cattle ranching. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Agriculture; Hydrological change; Landscape domestication; Paleoenvironment; Pre-Colombian Amazon
语种	英语
scopus关键词	charcoal; agriculture; agroforestry; Amazona; Article; climate change; Colombian; diatom; domestication; environmental factor; fire; flooding; Holocene; human; hydrology; land use; nonhuman; paleoecology; pollen; savanna; sediment
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/238635
作者单位	Department of Anthropology, University of Central Florida, Orlando, FL 32816, United States; Department of Geography and Environmental Sciences, Northumbria University Newcastle, Newcastle upon Tyne, NE1 8ST, United Kingdom
推荐引用方式 GB/T 7714	Duncan N.A.,Loughlin N.J.D.,Walker J.H.,et al. Pre-Columbian fire management and control of climate-driven floodwaters over 3,500 years in southwestern Amazonia[J],2021,118(40).
APA	Duncan N.A.,Loughlin N.J.D.,Walker J.H.,Hocking E.P.,&Whitney B.S..(2021).Pre-Columbian fire management and control of climate-driven floodwaters over 3,500 years in southwestern Amazonia.Proceedings of the National Academy of Sciences of the United States of America,118(40).
MLA	Duncan N.A.,et al."Pre-Columbian fire management and control of climate-driven floodwaters over 3,500 years in southwestern Amazonia".Proceedings of the National Academy of Sciences of the United States of America 118.40(2021).