Knowledge Resource Center for Ecological Environment in Arid Area
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
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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). |
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