干旱区生态环境知识资源中心(Arid): Lessons to Be Learned: Groundwater Depletion in Chile's Ligua and Petorca Watersheds through an Interdisciplinary Approach

Arid

DOI	10.3390/w12092446
	Lessons to Be Learned: Groundwater Depletion in Chile's Ligua and Petorca Watersheds through an Interdisciplinary Approach
	Duran-Llacer, Iongel; Munizaga, Juan; Arumi, Jose Luis; Ruybal, Christopher; Aguayo, Mauricio; Saez-Carrillo, Katia; Arriagada, Loretto; Rojas, Octavio
通讯作者	Duran-Llacer, I
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:9
英文摘要	Groundwater (GW) is the primary source of unfrozen freshwater on the planet and in many semi-arid areas, it is the only source of water available during low-water periods. In north-central Chile, there has been GW depletion as a result of semi-arid conditions and high water demand, which has unleashed major social conflicts, some due to drought and others due to agribusiness practices against the backdrop of a private water management model. The Ligua and Petorca watersheds in the Valparaiso Region were studied in order to analyze the influence of climatic and anthropogenic factors on aquifer depletion using an interdisciplinary approach that integrates hydroclimatic variables, remote sensing data techniques, and GW rights data to promote sustainable GW management. The Standardized Precipitation Index (SPI) and Normalized Difference Vegetation Index (NDVI) were calculated and the 2002-2017 land-use change was analyzed. It was shown that GW decreased significantly (in 75% of the wells) and that the hydrological drought was moderate and prolonged (longest drought in the last 36 years). The avocado-growing area in Ligua increased significantly-by 2623 ha-with respect to other agricultural areas (higher GW decrease), while in Petorca, it decreased by 128 ha. In addition, GW-rainfall correlations were low and GW rights were granted continuously despite the drought. The results confirmed that aquifer depletion was mostly influenced by human factors due to overexploitation by agriculture and a lack of water management.
英文关键词	groundwater depletion drought NDVI time series land-use change agriculture groundwater rights groundwater resources management
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000580213000001
WOS关键词	RIVER-BASIN ; CLIMATE-CHANGE ; DROUGHT ; IMPACTS ; RESPONSES ; TRENDS ; YIELD ; MODIS
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326942
作者单位	[Duran-Llacer, Iongel; Munizaga, Juan; Aguayo, Mauricio; Arriagada, Loretto; Rojas, Octavio] Univ Concepcion, Fac Environm Sci, Victor Lamas 1290, Concepcion 4070386, Chile; [Duran-Llacer, Iongel; Munizaga, Juan; Aguayo, Mauricio; Arriagada, Loretto; Rojas, Octavio] Univ Concepcion, Dept Terr Planning, EULA Chile Ctr, Victor Lamas 1290, Concepcion 4070386, Chile; [Arumi, Jose Luis] Univ Concepcion, CHRIAM Water Ctr, Dept Water Resources, Vicente Mendez 595, Chillan 3812120, Chile; [Ruybal, Christopher] Univ Concepcion, Dept Water Resources, US Fulbright Program Chile, Chillan 3812120, Chile; [Saez-Carrillo, Katia] Univ Concepcion, Fac Phys & Math Sci, Dept Stat, Victor Lamas 1290, Concepcion 4070386, Chile
推荐引用方式 GB/T 7714	Duran-Llacer, Iongel,Munizaga, Juan,Arumi, Jose Luis,et al. Lessons to Be Learned: Groundwater Depletion in Chile's Ligua and Petorca Watersheds through an Interdisciplinary Approach[J],2020,12(9).
APA	Duran-Llacer, Iongel.,Munizaga, Juan.,Arumi, Jose Luis.,Ruybal, Christopher.,Aguayo, Mauricio.,...&Rojas, Octavio.(2020).Lessons to Be Learned: Groundwater Depletion in Chile's Ligua and Petorca Watersheds through an Interdisciplinary Approach.WATER,12(9).
MLA	Duran-Llacer, Iongel,et al."Lessons to Be Learned: Groundwater Depletion in Chile's Ligua and Petorca Watersheds through an Interdisciplinary Approach".WATER 12.9(2020).