干旱区生态环境知识资源中心(Arid): Evaporation in Brazilian dryland reservoirs: Spatial variability and impact of riparian vegetation

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DOI	10.1016/j.scitotenv.2021.149059
	Evaporation in Brazilian dryland reservoirs: Spatial variability and impact of riparian vegetation
	Rodrigues, Italo Sampaio; Gomes Costa, Carlos Alexandre; Raabe, Armin; Augusto Medeiros, Pedro Henrique; de Araujo, Jose Carlos
通讯作者	Rodrigues, IS (corresponding author), Univ Fed Ceara, Master Agr Engn, Dept Agr Engn, Fortaleza, Ceara, Brazil.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	797
英文摘要	Evaporation is a major factor controlling the hydrological dynamics of surface water reservoirs in dry environments, therefore quantification with minimal uncertainties is desired. The aim of this paper is to assess the spatial variability and impact of riparian vegetation on reservoir evaporation by remote sensing. Eight reservoirs located in subhumid and semi-arid climates in the Brazilian Drylands were studied. Scenes from Landsat 5 and Landsat 8 satellites (1985 and 2018) supplied the data for four evaporation models. For reference evaporation, the Class A Pan and Piche Evaporimeter closest to the reservoirs were considered. The occurrence/density of riparian vegetation was associated with the Normalized Difference Vegetation Index (NDVI) and its influence on evaporation was assessed. The Surface Energy Balance System for Water (AquaSEBS) model presented the best average performance (Nash-Sutcliffe Efficiency coefficient 0.40 +/- 0.19). Evaporation was observed to be higher at the reservoirs' margins and near the dams, due to the contact of exposed soil and rock/concrete, respectively, which transfer heat to the water. Marginal areas near the riparian forest presented low evaporation rates with decreases between 18% and 31% in relation to the average. This interdependence was evidenced by the high negative correlation (R2 0.87-0.96) between NDVI and evaporation; vegetation reduces radiation because of the shading of the reservoir margin and changes local aerodynamics, reducing evaporation. Depending on the spatial variability of evaporation, it was found that the volumes transferred to the atmosphere may have variations of up to 30%. On average, the evaporated volume in all the studied reservoirs is 450,000 m3/day, a quantity enough to supply more than two million people. Overall, the results of this study contribute not only to a better understanding of the spa-tial variability of evaporation in surface reservoirs, but also of the interdependence between riparian vegetation and evaporation rates. (c) 2021 Elsevier B.V. All rights reserved.
英文关键词	Evaporation Hydrological processes Remote sensing Landsat images Riparian vegetation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000697733100015
WOS关键词	CLASS-A PAN ; SURFACE EVAPORATION ; WATER RESERVOIRS ; EDDY COVARIANCE ; SEMIARID REGION ; REMOTE ; EVAPOTRANSPIRATION ; TEMPERATURE ; MODELS ; NETWORK
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/2XILL650/368166
作者单位	[Rodrigues, Italo Sampaio] Fed Univ Ceara UFC, Master Agr Engn, Fortaleza, Ceara, Brazil; [Gomes Costa, Carlos Alexandre; de Araujo, Jose Carlos] Fed Univ Ceara UFC, Dept Agr Engn, Fortaleza, Ceara, Brazil; [Raabe, Armin] Univ Leipzig, Dept Phys & Geosci, Leipzig, Germany; [Augusto Medeiros, Pedro Henrique] Fed Inst Educ Sci & Technol Ceara IFCE, Limoeiro Do Norte, Brazil
推荐引用方式 GB/T 7714	Rodrigues, Italo Sampaio,Gomes Costa, Carlos Alexandre,Raabe, Armin,et al. Evaporation in Brazilian dryland reservoirs: Spatial variability and impact of riparian vegetation[J],2021,797.
APA	Rodrigues, Italo Sampaio,Gomes Costa, Carlos Alexandre,Raabe, Armin,Augusto Medeiros, Pedro Henrique,&de Araujo, Jose Carlos.(2021).Evaporation in Brazilian dryland reservoirs: Spatial variability and impact of riparian vegetation.SCIENCE OF THE TOTAL ENVIRONMENT,797.
MLA	Rodrigues, Italo Sampaio,et al."Evaporation in Brazilian dryland reservoirs: Spatial variability and impact of riparian vegetation".SCIENCE OF THE TOTAL ENVIRONMENT 797(2021).