INVESTIGATING THE EFFECT OF EDAPHIC PARAMETERS ON RUNOFF USING A RAINFALL SIMULATOR

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VAHABI J.; MAHDIAN M.H.

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Paper Information

Journal: Watershed Management Research Year:2009 | Volume:22 | Issue:2 (83) Page(s): 11-20

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Information Journal Paper

Title

INVESTIGATING THE EFFECT OF EDAPHIC PARAMETERS ON RUNOFF USING A RAINFALL SIMULATOR

Author(s)

VAHABI J. | MAHDIAN M.H. | Issue Writer Certificate

Keywords

RUNOFF DISCHARGEQ2

RAINFALL INTENSITYQ3

RAINFALL SIMULATORQ2

SLOPEQ2

SOIL MOISTUREQ2

VEGETATION COVER DENSITYQ2

Abstract

Considering arid and semiarid climatic conditions in Iran, the runoff generated from rainfall is one of the main sources of water supply demands for agricultural, industrial and domestic uses. Depending upon watersheds’ characteristics and weather conditions, a substantial part of precipitation may be changed into runoff. The knowledge about the discharge and volume of the runoff generated by rainfalls, especially in unguaged catchments, plays an important role in water resources management planning. In the absence of sufficient data recorded from the real events, use of RAINFALL SIMULATORs in the field and laboratory may be recommended to simulate runoff generation process in different conditions of soils, vegetation cover, SLOPE and rainfalls. In this research, a RAINFALL SIMULATOR was used to investigate the effect of VEGETATION COVER DENSITY and SOIL MOISTURE on runoff values. During this study, the rainfalls with intensities of 24.5 and 32 mm/h on 145 experimental plots in Taleghan basin were generated and the respective amounts of runoff were measured. Based on the obtained results, correlation matrix confirmed the visual interpretation of the dissipation graphs achieved from the investigated independent and dependent variables. The VEGETATION COVER DENSITY was found the most effective variable, affecting the RUNOFF DISCHARGE in the two simulated rainfall intensities. Percentage of vegetation cover in rainfall intensities of 24.5 and 32 mm/h was correlated with runoff value with the coefficients of -0.903 and 0.872, respectively at significant level of 0.01. The two regression relations were also developed for predicting runoff values in different conditions in the range of investigated independent variables.

Cites

STUDYING THE RELATIONSHIP BETWEEN ENVIRONMENTAL FACTORS, RUNOFF CHARACTERISTICS AND INFILTRATION DEPTH USING RAINFALL SIMULATOR IN NORTHWESTERN RANGELANDS OF IRAN

References

تاثیر رطوبت خاک و زمان بر روی تولید رواناب و رسوب

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APA: Copy

VAHABI, J., & MAHDIAN, M.H.. (2009). INVESTIGATING THE EFFECT OF EDAPHIC PARAMETERS ON RUNOFF USING A RAINFALL SIMULATOR. WATERSHED MANAGEMENT RESEARCHES (PAJOUHESH-VA-SAZANDEGI), 22(2 (83)), 11-20. SID. https://sid.ir/paper/200675/en

Vancouver: Copy

VAHABI J., MAHDIAN M.H.. INVESTIGATING THE EFFECT OF EDAPHIC PARAMETERS ON RUNOFF USING A RAINFALL SIMULATOR. WATERSHED MANAGEMENT RESEARCHES (PAJOUHESH-VA-SAZANDEGI)[Internet]. 2009;22(2 (83)):11-20. Available from: https://sid.ir/paper/200675/en

IEEE: Copy

J. VAHABI, and M.H. MAHDIAN, “INVESTIGATING THE EFFECT OF EDAPHIC PARAMETERS ON RUNOFF USING A RAINFALL SIMULATOR,” WATERSHED MANAGEMENT RESEARCHES (PAJOUHESH-VA-SAZANDEGI), vol. 22, no. 2 (83), pp. 11–20, 2009, [Online]. Available: https://sid.ir/paper/200675/en

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