气候变化领域集成服务门户(CCPortal): Influence of the spatial resolution of Digital Elevation Models on water-balance estimations in temporary shallow lakes

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DOI	10.1016/j.jhydrol.2024.131098
	Influence of the spatial resolution of Digital Elevation Models on water-balance estimations in temporary shallow lakes
	Sanchez-Emeterio, Gema; Sanchez-Ramos, David; Aragones, David G.; Dona, Carolina; Camacho, Antonio
发表日期	2024
ISSN	0022-1694
EISSN	1879-2707
起始页码	634
卷号	634
英文摘要	Many shallow lakes are strongly degraded and their hydroecological functioning has been altered. At the same time, their rate of disappearance is remarkably high compared to other ecosystem types. Moreover, due to their relatively small size and shallow depth these lakes are highly sensitive to meteorological variability, making them highly vulnerable to climate change. The accurate estimation of their water balance is key to identifying proper management strategies. To carefully model the water balance, it is necessary to use a Digital Elevation Model (DEM) of a high-enough spatial resolution to understand the bathymetric relationships of the basin; however, it is not always possible to generate DEMs with field data. Even when DEMs are available, it is still unclear what spatial resolution is adequate to obtain an accurate water balance in shallow lakes. The aim of this work was to analyze the influence that bathymetries from different DEMs may have on shallow lake-waterbalance estimations, using Lake Alcahozo (central Spain) as a case study. To do this, hydrological balances were developed with Lidar-derived DEMs with different spatial resolutions, and these balances were compared with one developed from bathymetric field data. The hydrological models obtained were calibrated with limnimetric measurements and validated with estimates of flooded areas calculated via remote-sensing imagery. The main results showed that, to a certain extent, the different resolutions of bathymetries do not have a strong influence on the result of water-balance estimations: DEMs up to a spatial resolution of 50 m (a pixel size representing 0.3 % of the basin area) have shown similar goodness-of-fit in the modeling of the hydrological balances in our case study. Therefore, depending on the objective of the study, Lidar data with different spatial resolutions can be used, up to a minimal resolution that should be determined on a case-by-case basis.
英文关键词	Shallow Lakes; Digital Elevation Model (DEM); Mapping Bathymetry; Water-Balance Model; Hydrological pattern
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:001223548100001
来源期刊	JOURNAL OF HYDROLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291028
作者单位	Universidad de Castilla-La Mancha; Universidad de Castilla-La Mancha; Universidad de Castilla-La Mancha; Universidad de Castilla-La Mancha; University of Valencia
推荐引用方式 GB/T 7714	Sanchez-Emeterio, Gema,Sanchez-Ramos, David,Aragones, David G.,et al. Influence of the spatial resolution of Digital Elevation Models on water-balance estimations in temporary shallow lakes[J],2024,634.
APA	Sanchez-Emeterio, Gema,Sanchez-Ramos, David,Aragones, David G.,Dona, Carolina,&Camacho, Antonio.(2024).Influence of the spatial resolution of Digital Elevation Models on water-balance estimations in temporary shallow lakes.JOURNAL OF HYDROLOGY,634.
MLA	Sanchez-Emeterio, Gema,et al."Influence of the spatial resolution of Digital Elevation Models on water-balance estimations in temporary shallow lakes".JOURNAL OF HYDROLOGY 634(2024).