Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches

Τhe eddy covariance technique provides reliable ecosystem-level evapotranspiration (ET) measurements. These measurements, when combined with models and satellite products, could offer high spatiotemporal coverage and valuable mechanistic interpretation of the underlying processes. This study address...

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Autores principales:	Nikos Markos, Kalliopi Radoglou
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	black locust deciduous forest eddy covariance evapotranspiration land surface water index restoration robinia pseudoacacia transpiration Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/79cf5995db3a4715bab3f2557bfafdf6
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spelling	oai:doaj.org-article:79cf5995db3a4715bab3f2557bfafdf62021-11-06T10:07:31ZEstimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches1606-97491607-079810.2166/ws.2021.142https://doaj.org/article/79cf5995db3a4715bab3f2557bfafdf62021-09-01T00:00:00Zhttp://ws.iwaponline.com/content/21/6/2553https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Τhe eddy covariance technique provides reliable ecosystem-level evapotranspiration (ET) measurements. These measurements, when combined with models and satellite products, could offer high spatiotemporal coverage and valuable mechanistic interpretation of the underlying processes. This study address one-year eddy covariance measurements from a Robinia pseudoacacia site in Northern Greece and remote sensing products: we (a) provide a medium-term description of daily ET fluxes for a R. pseudoacacia plantation in a degraded land, (b) assess the contribution of environmental drivers (e.g. net radiation, temperature etc.) on ET and (c) evaluate a simple satellite and meteorological driven model for larger-scale applications, based on the Land Surface Water Index (LSWI) and the FAO approach. R. pseudoacacia was found to have quite high water consumption, especially during leaf expansion. Net radiation and soil water content had the greatest effect on ecosystem evapotranspiration. LSWI was found to be correlated with both soil water content and evapotranspiration. Its use as an index for water limitation in models leads to high accuracy when compared to ET measurements. Our results (a) provide a significant contribution to the assessment of R. pseudoacacia ecophysiology and (b) highlight the potential of accurate ecosystem ET estimation with simple modeling approaches. HIGHLIGHTS The eddy covariance method contributes to the better knowledge of the species ecophysiology, as well as its performance under highly degraded soils.; An evapotranspiration model, evaluated against the eddy covariance measurements, appears to give a very good performance.; Land Surface Water Index was found to correlate well with ecosystem evapotranspiration and can be used as a crop coefficient scalar.;Nikos MarkosKalliopi RadoglouIWA Publishingarticleblack locustdeciduous foresteddy covarianceevapotranspirationland surface water indexrestorationrobinia pseudoacaciatranspirationWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 6, Pp 2553-2568 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	black locust deciduous forest eddy covariance evapotranspiration land surface water index restoration robinia pseudoacacia transpiration Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	black locust deciduous forest eddy covariance evapotranspiration land surface water index restoration robinia pseudoacacia transpiration Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Nikos Markos Kalliopi Radoglou Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches
description	Τhe eddy covariance technique provides reliable ecosystem-level evapotranspiration (ET) measurements. These measurements, when combined with models and satellite products, could offer high spatiotemporal coverage and valuable mechanistic interpretation of the underlying processes. This study address one-year eddy covariance measurements from a Robinia pseudoacacia site in Northern Greece and remote sensing products: we (a) provide a medium-term description of daily ET fluxes for a R. pseudoacacia plantation in a degraded land, (b) assess the contribution of environmental drivers (e.g. net radiation, temperature etc.) on ET and (c) evaluate a simple satellite and meteorological driven model for larger-scale applications, based on the Land Surface Water Index (LSWI) and the FAO approach. R. pseudoacacia was found to have quite high water consumption, especially during leaf expansion. Net radiation and soil water content had the greatest effect on ecosystem evapotranspiration. LSWI was found to be correlated with both soil water content and evapotranspiration. Its use as an index for water limitation in models leads to high accuracy when compared to ET measurements. Our results (a) provide a significant contribution to the assessment of R. pseudoacacia ecophysiology and (b) highlight the potential of accurate ecosystem ET estimation with simple modeling approaches. HIGHLIGHTS The eddy covariance method contributes to the better knowledge of the species ecophysiology, as well as its performance under highly degraded soils.; An evapotranspiration model, evaluated against the eddy covariance measurements, appears to give a very good performance.; Land Surface Water Index was found to correlate well with ecosystem evapotranspiration and can be used as a crop coefficient scalar.;
format	article
author	Nikos Markos Kalliopi Radoglou
author_facet	Nikos Markos Kalliopi Radoglou
author_sort	Nikos Markos
title	Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches
title_short	Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches
title_full	Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches
title_fullStr	Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches
title_full_unstemmed	Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches
title_sort	estimation of ecosystem evapotranspiration in a robinia pseudoacacia l. plantation with the use of the eddy covariance technique and modeling approaches
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/79cf5995db3a4715bab3f2557bfafdf6
work_keys_str_mv	AT nikosmarkos estimationofecosystemevapotranspirationinarobiniapseudoacacialplantationwiththeuseoftheeddycovariancetechniqueandmodelingapproaches AT kalliopiradoglou estimationofecosystemevapotranspirationinarobiniapseudoacacialplantationwiththeuseoftheeddycovariancetechniqueandmodelingapproaches
_version_	1718443804159115264

Estimation of ecosystem evapotranspiration in a Robinia pseudoacacia L. plantation with the use of the eddy covariance technique and modeling approaches

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