Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change

Consideration of future change in water salinity is important for estimating irrigation demand in salinity-prone arid regions. Further, it is important to evaluate the contribution of irrigation efficiency enhancement to climate change resilience. Based on field measurements in 2019, a simulation ap...

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Autores principales:	Zied Haj-Amor, Tapos Kumar Acharjee
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate change irrigation demand irrigation efficiency water salinity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/ac811dd8dc364ac19295a0e4a7099b49
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spelling	oai:doaj.org-article:ac811dd8dc364ac19295a0e4a7099b492021-11-05T19:01:19ZEffect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change2040-22442408-935410.2166/wcc.2020.099https://doaj.org/article/ac811dd8dc364ac19295a0e4a7099b492021-08-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/5/1437https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Consideration of future change in water salinity is important for estimating irrigation demand in salinity-prone arid regions. Further, it is important to evaluate the contribution of irrigation efficiency enhancement to climate change resilience. Based on field measurements in 2019, a simulation approach from 2019 to 2050 was carried out in this study to investigate the impact of climate change and its consequences (i.e., change in water salinity) on the future gross irrigation demand of date palms and possible applied dose of water in a Tunisian oasis considering different irrigation efficiency enhancements. The estimation was done under very high (RCP 8.5), medium (RCP 6.0), and low (RCP 4.5) emission scenarios using the CROPWAT model. Results first showed an increase in gross irrigation requirement under inefficient surface irrigation (37% efficiency) from 3,340 mm year−1 in 2019 to 3,588–3,642 mm year−1 in 2050 for different climate change scenarios. This significant increase is mainly attributed to a significant change in climate variables and a high increase in water salinity. Second, considerable water savings (up to 1,980 mm) can be achieved if surface irrigation efficiency increases from the current value of 37–70%. Finally, much water can be saved only by reducing the overdose amount of water. HIGHLIGHTS Takes into consideration future change in applied water salinity and potential contribution of irrigation efficiency enhancement to climate change resilience.; Investigates the effect of three climate change scenarios (RCP 8.5: very high emission scenario, RCP 6.0: medium emission scenario and RCP 4.5: lowest emission scenario) and its consequences (i.e. change in water salinity) on future gross irrigation demand (GIR) of date palms.;Zied Haj-AmorTapos Kumar AcharjeeIWA Publishingarticleclimate changeirrigation demandirrigation efficiencywater salinityEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 5, Pp 1437-1453 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate change irrigation demand irrigation efficiency water salinity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate change irrigation demand irrigation efficiency water salinity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Zied Haj-Amor Tapos Kumar Acharjee Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change
description	Consideration of future change in water salinity is important for estimating irrigation demand in salinity-prone arid regions. Further, it is important to evaluate the contribution of irrigation efficiency enhancement to climate change resilience. Based on field measurements in 2019, a simulation approach from 2019 to 2050 was carried out in this study to investigate the impact of climate change and its consequences (i.e., change in water salinity) on the future gross irrigation demand of date palms and possible applied dose of water in a Tunisian oasis considering different irrigation efficiency enhancements. The estimation was done under very high (RCP 8.5), medium (RCP 6.0), and low (RCP 4.5) emission scenarios using the CROPWAT model. Results first showed an increase in gross irrigation requirement under inefficient surface irrigation (37% efficiency) from 3,340 mm year−1 in 2019 to 3,588–3,642 mm year−1 in 2050 for different climate change scenarios. This significant increase is mainly attributed to a significant change in climate variables and a high increase in water salinity. Second, considerable water savings (up to 1,980 mm) can be achieved if surface irrigation efficiency increases from the current value of 37–70%. Finally, much water can be saved only by reducing the overdose amount of water. HIGHLIGHTS Takes into consideration future change in applied water salinity and potential contribution of irrigation efficiency enhancement to climate change resilience.; Investigates the effect of three climate change scenarios (RCP 8.5: very high emission scenario, RCP 6.0: medium emission scenario and RCP 4.5: lowest emission scenario) and its consequences (i.e. change in water salinity) on future gross irrigation demand (GIR) of date palms.;
format	article
author	Zied Haj-Amor Tapos Kumar Acharjee
author_facet	Zied Haj-Amor Tapos Kumar Acharjee
author_sort	Zied Haj-Amor
title	Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change
title_short	Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change
title_full	Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change
title_fullStr	Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change
title_full_unstemmed	Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change
title_sort	effect of irrigation efficiency enhancement on water demand of date palms in a tunisian oasis under climate change
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ac811dd8dc364ac19295a0e4a7099b49
work_keys_str_mv	AT ziedhajamor effectofirrigationefficiencyenhancementonwaterdemandofdatepalmsinatunisianoasisunderclimatechange AT taposkumaracharjee effectofirrigationefficiencyenhancementonwaterdemandofdatepalmsinatunisianoasisunderclimatechange
_version_	1718444118518005760

Effect of irrigation efficiency enhancement on water demand of date palms in a Tunisian oasis under climate change

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