WSM MODEL OPTIMIZATION IN SOIL EROSION AND SEDIMENT ESTIMATING, BY COEFFICIENT MODIFYING AND USING RAINFALL SIMULATOR IN NIR WATERSHED-YAZD PROVINCE

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MOTALEBNEJAD ALI; JAMALI ALI AKBAR; HASANZADEH MOHAMMAD; DASHTAKIAN KAZEM

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Journal: JOURNAL OF WATERSHED MANAGEMENT RESEARCH Year:2016 | Volume:6 | Issue:12 Page(s): 175-183

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Title

WSM MODEL OPTIMIZATION IN SOIL EROSION AND SEDIMENT ESTIMATING, BY COEFFICIENT MODIFYING AND USING RAINFALL SIMULATOR IN NIR WATERSHED-YAZD PROVINCE

Author(s)

MOTALEBNEJAD ALI | JAMALI ALI AKBAR | HASANZADEH MOHAMMAD | DASHTAKIAN KAZEM | Issue Writer Certificate

Keywords

CORRECTION COEFFICIENTSQ2

ESTIMATIONQ1

SEDIMENTQ1

EROSIONQ2

OBSERVATIONQ2

WSMQ2

NIR YAZDQ2

Abstract

Soil EROSION leads to washing topsoil, organic matter and soil fertility will decrease eventually. In order to combat EROSION and loss of soil, conservation and watershed SEDIMENT generation in the NIR region, based on the WSM modeling was performed to estimate the severity of soil deposits. The model with six factors was scored for each work unit. Usually suitable model for certain areas that used them in different situations, needs to model coefficients be calibrated in the study area. For calibration, were measured the amount of precipitation from the model (estimated) and the simulated rain (objective) per work units in this watershed. The results were showed that in some work units the amount of estimated is more than 10 times versus the amount of real data (model with overestimating). The coefficients correction was done by optimizing in the Solver, with convergence (10-4), mutation and forward derivative (0.075) technology, with default values. With using the CORRECTION COEFFICIENTS in the model and establishing a revised model, estimated SEDIMENT was closer to the objective values and were increased the correlation between estimate and the observed. Thus the modified model for areas with similar soil and climatic conditions in Yazd province, which has been used with caution. It is suggested to improve the coefficients, with the modified model results in a basin with actual values, to evaluate more confidently be used as local models.

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APA: Copy

MOTALEBNEJAD, ALI, JAMALI, ALI AKBAR, HASANZADEH, MOHAMMAD, & DASHTAKIAN, KAZEM. (2016). WSM MODEL OPTIMIZATION IN SOIL EROSION AND SEDIMENT ESTIMATING, BY COEFFICIENT MODIFYING AND USING RAINFALL SIMULATOR IN NIR WATERSHED-YAZD PROVINCE. JOURNAL OF WATERSHED MANAGEMENT RESEARCH, 6(12), 175-183. SID. https://sid.ir/paper/230324/en

Vancouver: Copy

MOTALEBNEJAD ALI, JAMALI ALI AKBAR, HASANZADEH MOHAMMAD, DASHTAKIAN KAZEM. WSM MODEL OPTIMIZATION IN SOIL EROSION AND SEDIMENT ESTIMATING, BY COEFFICIENT MODIFYING AND USING RAINFALL SIMULATOR IN NIR WATERSHED-YAZD PROVINCE. JOURNAL OF WATERSHED MANAGEMENT RESEARCH[Internet]. 2016;6(12):175-183. Available from: https://sid.ir/paper/230324/en

IEEE: Copy

ALI MOTALEBNEJAD, ALI AKBAR JAMALI, MOHAMMAD HASANZADEH, and KAZEM DASHTAKIAN, “WSM MODEL OPTIMIZATION IN SOIL EROSION AND SEDIMENT ESTIMATING, BY COEFFICIENT MODIFYING AND USING RAINFALL SIMULATOR IN NIR WATERSHED-YAZD PROVINCE,” JOURNAL OF WATERSHED MANAGEMENT RESEARCH, vol. 6, no. 12, pp. 175–183, 2016, [Online]. Available: https://sid.ir/paper/230324/en

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