干旱区生态环境知识资源中心(Arid): Long-term spatiotemporal variability in high Andean wetlands in northern Chile

Arid

DOI	10.1016/j.scitotenv.2020.143830
	Long-term spatiotemporal variability in high Andean wetlands in northern Chile
	de la Fuente, Alberto; Meruane, Carolina; Suarez, Francisco
通讯作者	de la Fuente, A (corresponding author), Univ Chile, Dept Ingn Civil, Avda Blanco Encalada 2002, Santiago 8370449, Chile.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	756
英文摘要	High Andean wetlands of the elevated plateaus of the Andes Mountains of Chile, Argentina, Peru and Bolivia are true oases that sustain life in this arid region. Despite their ecological value, they have been rarely studied and are vulnerable to climate change and human activities that require groundwater resources. One such activity that may be intensified in the near future is mining for nonmetallic minerals such as lithium, whose worldwide demand is expected to increase with the rise of electric vehicles that need batteries. To determine a baseline of the natural dynamics of these systems, which allows sustainable management, it is essential to understand the spatiotemporal dynamics of these wetlands. In this artide, we studied the temporal and spatial dynamics of high Andean wetlands of Chile, with the aim of identifying the key processes that govern their dynamics. To do this, we used time series of Landsat data from 1984 to 2019 to study 10 high Andean wetlands. Furthermore, to characterize the climate variability in these systems, we studied the long-term relation between the changes in water and vegetation areas with rainfall and evaporation variability. It was found that the groundwater reservoir plays a key role in sustaining the high Andean wetlands. Wet years with a period of occurrence of 20-30 years are the years in which the groundwater reservoirs are actually recharged, and in between wet years, the groundwater reservoirs gradually release the water that sustains the aquatic ecosystems. Hence, groundwater exploitation should be carefully designed from a long-term perspective, as groundwater levels could take decades to recover. (C) 2020 The Authors. Published by Elsevier B.V.
英文关键词	High Andean wetlands Water availability Long-term monitoring Climate variability Terminal wetlands
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000603487500042
WOS关键词	DIFFERENCE WATER INDEX ; EVAPORATION ; SALAR ; ATACAMA ; HYDRODYNAMICS ; BASINS ; BRINE ; NDWI
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348189
作者单位	[de la Fuente, Alberto; Meruane, Carolina] Univ Chile, Dept Ingn Civil, Avda Blanco Encalada 2002, Santiago 8370449, Chile; [Meruane, Carolina] Modelac Ambiental SpA, Providencia, Chile; [Suarez, Francisco] Pontificia Univ Catolica Chile, Dept Ingn Hidraul & Ambiental, Santiago, Chile; [Suarez, Francisco] Ctr Desarrollo Urbano Sustentable CEDEUS, Santiago, Chile; [Suarez, Francisco] Ctr Excelencia Geotermia Andes CEGA, Santiago, Chile
推荐引用方式 GB/T 7714	de la Fuente, Alberto,Meruane, Carolina,Suarez, Francisco. Long-term spatiotemporal variability in high Andean wetlands in northern Chile[J],2021,756.
APA	de la Fuente, Alberto,Meruane, Carolina,&Suarez, Francisco.(2021).Long-term spatiotemporal variability in high Andean wetlands in northern Chile.SCIENCE OF THE TOTAL ENVIRONMENT,756.
MLA	de la Fuente, Alberto,et al."Long-term spatiotemporal variability in high Andean wetlands in northern Chile".SCIENCE OF THE TOTAL ENVIRONMENT 756(2021).