Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

An Investigation on the Cause of Thresholds of Gulling Initiation and Gulling Processes in Semi- Aird Mountains, Case Study: NW Slopes of Sabalan Mt. and NE of Gusheh Dagh Mt. (between Ahar and Meshkinshahr)

Document Type : Original Research Paper

Author
Maryam Bayati Khatibi
Geographycal Research Group of Tabriz University, Tabriz, Iran
Abstract
In the study area, the development of gullies and gulling processes are very complex regarding geological structures, lithological factors and surface materials. Soil condition, topographic and climatological factors represent very vulnerable base for gulling processes. In this study, all these factors were examined in the laboratory and the field. The results show that the role of soil moisture and climatological factors (e.g., storms and temperature) are important in gulling processes. In the region, gullies develop at the foot of slopes because the surface of slopes is not covered with plant in the early spring and autumn or disturbed by human activity. The role of lithological factors and type of surface materials are very important parameters in gulling processes. The major portion of gulling, especially linear one head – gulling and polymorph gulling are growing on old alluvial, Silt and Marl.
Keywords
Gully erosion
Gulling
Degradation
Sediment production
Storm – run off erosion
Soil erosion
Semi- arid mountain – Gushed Dash Mt. Sabalan Mt

Subjects

                                                                        
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Scientific Quarterly Journal of Geosciences
Volume 15, Issue 60
Summer 2006, Vol. 15, No.60
Summer 2006
Pages 56-71