Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran

Climate change is one of the leading factors that directly affect hydrological processes in large basins. This study assesses the impacts of climate change on streamflow, sediment and crop yield, actual evapotranspiration (AET), and water budget. In addition, the effects of land use and land cover (...

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Autores principales:	Mohammad Reza Eini, Saman Javadi, Mehdy Hashemy Shahdany, Ozgur Kisi
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	crop simulation dez dam land use change sediment zagros mountains 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/45c4dd7ed7f5478fba651e166c6357a6
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spelling	oai:doaj.org-article:45c4dd7ed7f5478fba651e166c6357a62021-11-06T07:12:34ZComprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran1606-97491607-079810.2166/ws.2020.363https://doaj.org/article/45c4dd7ed7f5478fba651e166c6357a62021-05-01T00:00:00Zhttp://ws.iwaponline.com/content/21/3/1157https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Climate change is one of the leading factors that directly affect hydrological processes in large basins. This study assesses the impacts of climate change on streamflow, sediment and crop yield, actual evapotranspiration (AET), and water budget. In addition, the effects of land use and land cover (LULC) alteration with climate change on streamflow and sediment yield have been evaluated in the Dez river basin in the southwest of Iran. Five General Circulation Models (GCMs) based on two scenarios, Representative Concentration Pathway (RCP) 4.5 and RCP 8.5 for the near period (2021–2040) are considered. Hydrological simulation is performed using the Soil and Water assessment tool (SWAT) with good performance in the calibration (1990 to 2010) and validation (2010 to 2017) periods. The precipitation and temperature projected show a major upward trend related to the base period. The results showed that climate change increases the runoff and sediments. In addition, results projected that garden crop yields would increase while agricultural crop yields would decrease. In addition, AET will face a slight decline of about 2%–6%. Combined LULC and climate change scenarios showed that with amplification of orchards areas, sediment load would decrease. HIGHLIGHTS Climate change increases the runoff and sediments.; Evaluate the impacts of climate change on streamflow, sediment yield, crop yield, actual evapotranspiration, and water budget.; Set up a comprehensive model for multifunctional calibration of hydrological processes.;Mohammad Reza EiniSaman JavadiMehdy Hashemy ShahdanyOzgur KisiIWA Publishingarticlecrop simulationdez damland use changesedimentzagros mountainsWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 3, Pp 1157-1176 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	crop simulation dez dam land use change sediment zagros mountains Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	crop simulation dez dam land use change sediment zagros mountains Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Mohammad Reza Eini Saman Javadi Mehdy Hashemy Shahdany Ozgur Kisi Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran
description	Climate change is one of the leading factors that directly affect hydrological processes in large basins. This study assesses the impacts of climate change on streamflow, sediment and crop yield, actual evapotranspiration (AET), and water budget. In addition, the effects of land use and land cover (LULC) alteration with climate change on streamflow and sediment yield have been evaluated in the Dez river basin in the southwest of Iran. Five General Circulation Models (GCMs) based on two scenarios, Representative Concentration Pathway (RCP) 4.5 and RCP 8.5 for the near period (2021–2040) are considered. Hydrological simulation is performed using the Soil and Water assessment tool (SWAT) with good performance in the calibration (1990 to 2010) and validation (2010 to 2017) periods. The precipitation and temperature projected show a major upward trend related to the base period. The results showed that climate change increases the runoff and sediments. In addition, results projected that garden crop yields would increase while agricultural crop yields would decrease. In addition, AET will face a slight decline of about 2%–6%. Combined LULC and climate change scenarios showed that with amplification of orchards areas, sediment load would decrease. HIGHLIGHTS Climate change increases the runoff and sediments.; Evaluate the impacts of climate change on streamflow, sediment yield, crop yield, actual evapotranspiration, and water budget.; Set up a comprehensive model for multifunctional calibration of hydrological processes.;
format	article
author	Mohammad Reza Eini Saman Javadi Mehdy Hashemy Shahdany Ozgur Kisi
author_facet	Mohammad Reza Eini Saman Javadi Mehdy Hashemy Shahdany Ozgur Kisi
author_sort	Mohammad Reza Eini
title	Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran
title_short	Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran
title_full	Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran
title_fullStr	Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran
title_full_unstemmed	Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran
title_sort	comprehensive assessment and scenario simulation for the future of the hydrological processes in dez river basin, iran
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/45c4dd7ed7f5478fba651e166c6357a6
work_keys_str_mv	AT mohammadrezaeini comprehensiveassessmentandscenariosimulationforthefutureofthehydrologicalprocessesindezriverbasiniran AT samanjavadi comprehensiveassessmentandscenariosimulationforthefutureofthehydrologicalprocessesindezriverbasiniran AT mehdyhashemyshahdany comprehensiveassessmentandscenariosimulationforthefutureofthehydrologicalprocessesindezriverbasiniran AT ozgurkisi comprehensiveassessmentandscenariosimulationforthefutureofthehydrologicalprocessesindezriverbasiniran
_version_	1718443791033040896

Comprehensive assessment and scenario simulation for the future of the hydrological processes in Dez river basin, Iran

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