EFFICIENCY OF MPSIAC AND EPM MODELS FOR ASSESSMENT SOIL EROSION IN RANGE SUITABILITY

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AMIRI FAZEL; ARZANI HOSSEIN; FARAHPOUR MAHDI; CHAEICHI M.R.; KHAJEH ALDIN S.J.A.D.

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Journal: Journal of Rangeland Year:2009 | Volume:3 | Issue:1 Page(s): 138-154

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Title

EFFICIENCY OF MPSIAC AND EPM MODELS FOR ASSESSMENT SOIL EROSION IN RANGE SUITABILITY

Author(s)

Keywords

RANG SUITABILITYQ2

EROSION ASSESSMENTQ3

MPSIAC AND EPM MODELQ3

GHAREH AGHACH WATERSHEDQ3

GISQ3

Abstract

Soil EROSION ASSESSMENT is an important factor for determine range suitability. The objective of this research were to compare efficiency of MPSIAC AND EPM MODELs in classification soil erosion sensitivity in GHAREH AGHACH WATERSHED extends 8962.25 hectares in Semirom province. To achieve variables models, digitalize topographic map in 1:25000 scale, digital evaluation model, slope map, aerial photos of 1:40000 scale, geological, geomorphologic, vegetation cover, pedological and land use maps were used. In frequent field visits all the necessary data from MPSIAC AND EPM MODELs were collected, checked and improved in 5 Hydrological units (sampling units). Following of finalizing the information layers, all of them were integrated to create the final soil erosion sensitivity map for each Hydrologic unite and vegetation type. For levels of suitability suggested by FAO including highly suitable (S1), moderately suitable (S2), marginally suitable (S3) and not suitable (N) were applied to indicate degree of suitability. The result of MPSIAC model indicated that 3.5% of the area was classified at low soil erosion sensitivity and 64% was classified at medium soil erosion sensitivity and 32.4% was classified at high soil erosion sensitivity, respectively. According to the results of EPM model, 57% of area was classified at moderate level of sensitivity to erosion and 5.4% and 37.6% of the area were classified at high and very high level of sensitivity to erosion, respectively. The results of statistical compare of erosion of MPSIAC AND EPM MODELs in hydrologic unit (sampling unit) by real erosion measure show that, there is no significant different between erosion estimate by MPSIAC model and real erosion measure at level of I% and 5%, but the erosion estimate by EPM model have a significant different at level of 5%. Thereafter, very high erosion class was found for EPM model under study. Due to not fully compatible tables for EPM model and its subjective nature, one can conclude that MPSIAC model may have better performance.

Cites

COMPARISON BETWEEN EROSION INDUCED BY WATER AND WIND OF GEOMORPHIC UNITS IN THE KAROON RIVER CATCHMENT USING IRIFER AND PSIAC MODELS

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APA: Copy

AMIRI, FAZEL, ARZANI, HOSSEIN, FARAHPOUR, MAHDI, CHAEICHI, M.R., & KHAJEH ALDIN, S.J.A.D.. (2009). EFFICIENCY OF MPSIAC AND EPM MODELS FOR ASSESSMENT SOIL EROSION IN RANGE SUITABILITY. RANGELAND, 3(1), 138-154. SID. https://sid.ir/paper/136360/en

Vancouver: Copy

AMIRI FAZEL, ARZANI HOSSEIN, FARAHPOUR MAHDI, CHAEICHI M.R., KHAJEH ALDIN S.J.A.D.. EFFICIENCY OF MPSIAC AND EPM MODELS FOR ASSESSMENT SOIL EROSION IN RANGE SUITABILITY. RANGELAND[Internet]. 2009;3(1):138-154. Available from: https://sid.ir/paper/136360/en

IEEE: Copy

FAZEL AMIRI, HOSSEIN ARZANI, MAHDI FARAHPOUR, M.R. CHAEICHI, and S.J.A.D. KHAJEH ALDIN, “EFFICIENCY OF MPSIAC AND EPM MODELS FOR ASSESSMENT SOIL EROSION IN RANGE SUITABILITY,” RANGELAND, vol. 3, no. 1, pp. 138–154, 2009, [Online]. Available: https://sid.ir/paper/136360/en

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