Role of Landform in Erodability (Case Study, Hasanjon Basin)

Geomorphologic characteristics of the basis of the natural resources of watershed basins Because of the these characteristics is influence by many factors such as climate and Soil, Hydrology, ecology, geology, etc, are the erosion which can create problems. Undoubtedly, the erosion forms to suit the characteristics and features found in the development of geomorphology. In this study, using topographic maps, geology, satellite imagery, aerial photographs and GIS to identify existing drainage problems in the environment in relation to other natural parameters (soil and water resources, physical features and geology and basin) and the effect of these factors on soil erodability in the region is studied. Geomorphology subsequent studies showed that the study area based on profile height, slope and shape protests geological terrain mountain units, respectively (1) foothills (2) a range of plain and alluvial fan (3) are separable from 12 fancies due to different geomorphologic processes were identified among them fancies rock mass covering erosion and soil deposits with detached suitable rangeland vegetation to rocky outcrops about 20 percent of the earth covered mountains in the unit to a regular type domain (5/38 percent of the total watershed area) the highest level to the accounts is among the forms of erosion (erosion surface) significantly in the area there as spots on the soil surface without vegetation or with poor vegetation cover is almost basin at all levels is visible. In addition to natural factors, human factors as well as with poverty and lack of principles Activity Range, vegetation can be effective in spreading such Mind.