STUDY OF CLIMATE CHANGE AND LAND USE CHANGES IMPACTS ON SURFACE RUNOFF: BALIGHLO CHAI WATERSHED IN ARDEBIL

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FARROKHZADEH BEHNOUSH; CHOOBEH SEPIDEH; NOURI HAMID; Goodarzi Massoud

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Journal: WATERSHED ENGINEERING AND MANAGEMENT Year:2018 | Volume:10 | Issue:3 Page(s): 318-331

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Information Journal Paper

Title

STUDY OF CLIMATE CHANGE AND LAND USE CHANGES IMPACTS ON SURFACE RUNOFF: BALIGHLO CHAI WATERSHED IN ARDEBIL

Author(s)

FARROKHZADEH BEHNOUSH | CHOOBEH SEPIDEH | NOURI HAMID | Goodarzi Massoud | Issue Writer Certificate

Keywords

DOWNSCALINGQ1

FLOOD VOLUMEQ1

HEC-HMSQ1

INCREASE IN PEAK FLOWQ2

SIMULATIONQ1

Abstract

In addition to climate change, the land use changes as an ancillary factor affects flooding. Thus evaluation of impacts of climate change and land use change (together) on flood situation in the coming decades will open a new way to deal with this phenomenon. In this research, to study the effects of climate change on 2020s in Balighloo Chai Watershed, HadCM3 under A2 and B1 senarios was downscaled with LARS-WG. Results showed an increase between 8.78 to 12.86 percent in average of annual rainfall in 2020s. Average annual temperture increases 0.66oC in 2020s. After examining past hanges in land use, two scenarios were developed to predict the impact of land use changes on the runoff in the coming decades: the first scenario assumes a constant in current land use and the second scenario assumes continuation of changes rate during past decades in the future. Results showed a decrease between nine percent in rangelands and five percent increase in agricultural lands area respectively in 2020s. In order to simulate the hydrologic system in the coming decades, HEC-HMS model was calibrated and validated using data of past period, and was used with new curve number, impersive area and hytograph estimated for the future decades. Then the coming decades predicted hydrographs were compared to the past ones. Results showed an INCREASE IN PEAK FLOW and FLOOD VOLUME in April while they will decrease in March, May and June. If land use change occures with climate change, this increase will be intensified.

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APA: Copy

FARROKHZADEH, BEHNOUSH, CHOOBEH, SEPIDEH, NOURI, HAMID, & Goodarzi, Massoud. (2018). STUDY OF CLIMATE CHANGE AND LAND USE CHANGES IMPACTS ON SURFACE RUNOFF: BALIGHLO CHAI WATERSHED IN ARDEBIL. WATERSHED ENGINEERING AND MANAGEMENT, 10(3 ), 318-331. SID. https://sid.ir/paper/234693/en

Vancouver: Copy

FARROKHZADEH BEHNOUSH, CHOOBEH SEPIDEH, NOURI HAMID, Goodarzi Massoud. STUDY OF CLIMATE CHANGE AND LAND USE CHANGES IMPACTS ON SURFACE RUNOFF: BALIGHLO CHAI WATERSHED IN ARDEBIL. WATERSHED ENGINEERING AND MANAGEMENT[Internet]. 2018;10(3 ):318-331. Available from: https://sid.ir/paper/234693/en

IEEE: Copy

BEHNOUSH FARROKHZADEH, SEPIDEH CHOOBEH, HAMID NOURI, and Massoud Goodarzi, “STUDY OF CLIMATE CHANGE AND LAND USE CHANGES IMPACTS ON SURFACE RUNOFF: BALIGHLO CHAI WATERSHED IN ARDEBIL,” WATERSHED ENGINEERING AND MANAGEMENT, vol. 10, no. 3 , pp. 318–331, 2018, [Online]. Available: https://sid.ir/paper/234693/en

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