The effect of forest harvesting variants on runoff and loss of water resources using SWAT rainfall-runoff model in Kheyrud forest watershed

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Moradnezhadi M.; JOURGHOLAMI M.; BOZORG HADDAD O.

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Journal: Journal of Forest and Wood Products Year:2019 | Volume:71 | Issue:4 Page(s): 275-287

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Title

The effect of forest harvesting variants on runoff and loss of water resources using SWAT rainfall-runoff model in Kheyrud forest watershed

Author(s)

Moradnezhadi M. | JOURGHOLAMI M. | BOZORG HADDAD O. | Issue Writer Certificate

Keywords

Rainfall-runoffQ1

Forest harvestingQ2

Forest watershedQ1

Monthly dischargeQ2

SWAT modelQ2

Abstract

Knowing the effects of Forest harvesting on water losses and the occurrence of devastating floods is necessary in the management of Forest watersheds. In the curent research, the effect of forest utilization was studied on the runoff and loss of water by using the SWAT model in the Kheyrud Forest watershed. For this purpose, calibrating and validating of the model were firstly done by putting the 20 percent exploitation from each sub-basin into use and repeating the simulations of the SWAT model. The rate of monthly flow changes was obtained and then evaluated by using the indices % F and f. The % F index makes use of sub-region area parameter in Monthly discharge analysis. The calibration and validation of the SWAT model were performed using SUFI2 algorithm in SWAT-CUP software and error evaluation criteria, respectively. The results of calibration and validation of the SWAT model showed the acceptable capability of simulation for this model. The implementation of 20 percent showed that increasing the exploitation percent of forest trees in sub-basins 3, 4, and 5 resulted in increasing the Monthly discharge, while the implementation of 20 percent in sub-basins 1 and 2 presented no tangible effect on the increase of the watershed’ s Monthly discharge. In fact, sub-basins situated in the middle of the Kheyrud watershed, especially sub-basins 4 and 5, due to the concurrency of the sub-basin discharge at the outlet point of the catchment, accompanied with the proper physiographic conditions providing a condition for the watershed to have a greater Monthly discharge. These results can be useful in managing forest exploitation and selecting the most suitable utilization places.

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APA: Copy

Moradnezhadi, M., JOURGHOLAMI, M., & BOZORG HADDAD, O.. (2019). The effect of forest harvesting variants on runoff and loss of water resources using SWAT rainfall-runoff model in Kheyrud forest watershed. JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), 71(4 ), 275-287. SID. https://sid.ir/paper/367687/en

Vancouver: Copy

Moradnezhadi M., JOURGHOLAMI M., BOZORG HADDAD O.. The effect of forest harvesting variants on runoff and loss of water resources using SWAT rainfall-runoff model in Kheyrud forest watershed. JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2019;71(4 ):275-287. Available from: https://sid.ir/paper/367687/en

IEEE: Copy

M. Moradnezhadi, M. JOURGHOLAMI, and O. BOZORG HADDAD, “The effect of forest harvesting variants on runoff and loss of water resources using SWAT rainfall-runoff model in Kheyrud forest watershed,” JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 71, no. 4 , pp. 275–287, 2019, [Online]. Available: https://sid.ir/paper/367687/en

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