Research Article | OPEN ACCESS
Assessment Fargas and BLM Models for Identification of Erosion Degree and Critical Sediment Sources (Case Study: Aghbolagh Drainage Basin, Hashtrood City)
1Naser Abdi and 2Aliasghar Mohammadi
1Department of Geology, Ahar Branch, Islamic Azad University, Ahar, Iran
2Islamic Azad University, Scientific and Research Campus, Tehran, Iran
Research Journal of Environmental and Earth Sciences 2014 8:408-415
Received: January 01, 2014 | Accepted: January 07, 2014 | Published: August 20, 2014
Abstract
The identification of the different areas in drainage basin (as a natural planning unit) for occurring the sedimentation and its severity in different phases of basic studies has been always one of the most important purposes of the natural resources experts. For achieving to this purpose some experimental models has been presented that Some of them have high efficiency and others have weaknesses. Fargas and BLM models are used in this research and they are run in Aghbolagh drainage basin in Hashtrood town, East Azarbayjan province with 7.8 km2 area. Fargas model includes only two factors, the rock type erosivity and drainage density in the every rock unit, whereas BLM model includes seven factors; the surface erosion, the litter cover, the rock cover on the surface, the affection of destruction on the surface, the surface rill erosion, the affection of the sedimentation due to the water flow and the amplification of gully erosion. The objective of this research is the handling of these two models for different phases of basic studies in the study area. The results of two models showed, in Fargas model 3.67% area of the basin has high erosion, 14.26% area of the basin has severe erosion and 81.04% has very severe erosion and in BLM model 42.97% area of the basin has moderate erosion and 24.93% has high erosion, therefore 52.85% of the study area in Fargas and BLM models has concurrence in the erosion severity.
Keywords:
Azarbayjan , drainage density, erosion severity, lithology,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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