ROLE OF SENSITIVITY OF EROSION THE GEOLOGICAL FORMATIONS AT EROSION RATE AND SEDIMENT YIELD (CASE STUDY: SUB-BASINS OF DOVIRAJ RIVER, ILAM PROVINCE)

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FATHIZAD HASSAN; KARIMI HAJI; TAVAKOLI MOHSEN

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Journal: JOURNAL OF WATERSHED MANAGEMENT RESEARCH Year:2016 | Volume:7 | Issue:13 Page(s): 193-208

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Title

ROLE OF SENSITIVITY OF EROSION THE GEOLOGICAL FORMATIONS AT EROSION RATE AND SEDIMENT YIELD (CASE STUDY: SUB-BASINS OF DOVIRAJ RIVER, ILAM PROVINCE)

Author(s)

FATHIZAD HASSAN | KARIMI HAJI | TAVAKOLI MOHSEN | Issue Writer Certificate

Keywords

DOVIRAJQ2

EROSIONQ1

FEYZNIA METHODQ1

GEOLOGICAL FORMATIONSQ1

SEDIMENTQ2

Abstract

Studies related to EROSION and soil conservation of litho logical and geological characteristics of catchments have particular importance, Due to their effects. EROSION and SEDIMENT production are related to many factors, in which, the sensitivity of geological formation to EROSION is the most important parameter. In this study, formations sensitivity to EROSION in two sub-basins of DOVIRAJ River located in Ilam Province is compared and their role in EROSION and SEDIMENT yield has been investigated. In order to study the sensitivity of GEOLOGICAL FORMATIONS the Faiznia (1996) method is used. Results showed that the erodibility of the GEOLOGICAL FORMATIONS has a significant role in the EROSION and SEDIMENT production, so that, the EROSION and SEDIMENT yield of the first catchment is 2.5 times as much as the second catchment, because 92.4%of the sub-basin 1, is classified as sensitive to EROSION and 7.45% the average class of sensitivity, but in the sub-basin 2, the above amounts are 65.01% and 34.99% respectively. Also, in the sub-basin 1, the Gachsaran formation which covers 6304 hectares (82.09% of the catchment) has the highest frequency and the above figure in the subbasin 2, is 2166.86 hectares (49.07% of the catchment). Higher EROSION and SEDIMENT yield of the sub-basin 1 compared to the sub-basin 2 is due to the existence of sensitive formation to EROSION, especially Gachsaran formation which has the highest frequency in the study area.

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APA: Copy

FATHIZAD, HASSAN, KARIMI, HAJI, & TAVAKOLI, MOHSEN. (2016). ROLE OF SENSITIVITY OF EROSION THE GEOLOGICAL FORMATIONS AT EROSION RATE AND SEDIMENT YIELD (CASE STUDY: SUB-BASINS OF DOVIRAJ RIVER, ILAM PROVINCE). JOURNAL OF WATERSHED MANAGEMENT RESEARCH, 7(13), 193-208. SID. https://sid.ir/paper/230263/en

Vancouver: Copy

FATHIZAD HASSAN, KARIMI HAJI, TAVAKOLI MOHSEN. ROLE OF SENSITIVITY OF EROSION THE GEOLOGICAL FORMATIONS AT EROSION RATE AND SEDIMENT YIELD (CASE STUDY: SUB-BASINS OF DOVIRAJ RIVER, ILAM PROVINCE). JOURNAL OF WATERSHED MANAGEMENT RESEARCH[Internet]. 2016;7(13):193-208. Available from: https://sid.ir/paper/230263/en

IEEE: Copy

HASSAN FATHIZAD, HAJI KARIMI, and MOHSEN TAVAKOLI, “ROLE OF SENSITIVITY OF EROSION THE GEOLOGICAL FORMATIONS AT EROSION RATE AND SEDIMENT YIELD (CASE STUDY: SUB-BASINS OF DOVIRAJ RIVER, ILAM PROVINCE),” JOURNAL OF WATERSHED MANAGEMENT RESEARCH, vol. 7, no. 13, pp. 193–208, 2016, [Online]. Available: https://sid.ir/paper/230263/en

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