List of Articles Erosion features

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  1 - Investigation of effective factors on geomorphologic Characteristics and Development of erosion features, using GIS and RS (Case Study:mirdeh cheraghvis Basin, Kurdistan province)
  محسن Ranjbar فاضل Iranmanesh
  Geomorphologic Characteristics are base of study of natural resources in watershed basin. Because, these Characteristics are influenced by many factors such as climate, soil, hydrology, ecology, geology and so on. Doubtless, erosion features will develop with Geomorphol More

  Geomorphologic Characteristics are base of study of natural resources in watershed basin. Because, these Characteristics are influenced by many factors such as climate, soil, hydrology, ecology, geology and so on. Doubtless, erosion features will develop with Geomorphologic Characteristics. In this research, effective factors on geomorphologic Characteristics and development of erosion features have analyzed using remote sensing data and GIS and with an integration method. In this way, boundary of basin was clipped using topography map in 1:50000 scales. Then, all layers such as geology, slope, and land use and land capability were digitized. An image of Land sat ETM+ taken in 2002 was also used to discretion of geomorphologic unit, Type and interpretation of erosion features. The results showed that, Geomorphologic features in the basin separated to mountains, hills and alluvial deposit base on height, slope and morph metric Characteristics. Totally, eight Geomorphologic fancies are recognized. Stone mass with deposited cover from mountain unit with regular slope (1_1_1) have 74 ha (45% from whole area). Also, a lot of surface erosion has developed like white scattered spots and without vegetable or few vegetable. To add natural factors, human factors such as livelihood and sheep keeper can effect on developed erosion features.   Manuscript profile
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  2 - The Investigation of Some Data Layers Integration for Water-Soil Erosion Features Intensity Map in Mountainous Regions (Case Study: Kan and Sologhan Basin)
  Ali Mohammadi Torkashvand
  With regards to the importance of soil erosion features map in watershedmanagement, and also country extent, diversity of climate, physiographic,geology, pedology, land use and plant cover, it is expectable the highdifference with due attention to soil erosion types tha More

  With regards to the importance of soil erosion features map in watershedmanagement, and also country extent, diversity of climate, physiographic,geology, pedology, land use and plant cover, it is expectable the highdifference with due attention to soil erosion types that is caused indifferent conditions differentiate to investigate erosion features. Forinvestigating some method in providing erosion types map at the scales1:250000 in mountainous regions, a study was conducted in Kan-Sologhanbasin, north-west Tehran, Iran. At the first stage, from integration of datalayers, four working units maps were prepared including: 1. geology, plantcover and slope, 2. geology, land use, slope, 3. rocks erodibility, land useand slope and 4. rocks erodibility, land use and land units. At the secondphase, intensities of soil erosion types in 53 ground control points werecontrolled and accurate positions were registered by GPS. Each ofworking units map was overlayed by ground control points map. Resultsindicated that maps 1, 2 and approximately map 3, are no suitable methodsfor differentiating homogenous units, because the high numbers ofworking units beside together have same erosion features. It should beregarded that the high numbers of units from an economic regards werecaused the high costs and time consuming. Map 4 including 6 units thattwo units, 66.6% and one unit, 85% of ground control points had sameerosion. In other units including agriculture lands and rocks outcrops,approximately, erosion features were uniform in all points. In general,integration of land use, rocks erodibility and land units layers is the bettermethod than other methods for providing soil erosion features map. Manuscript profile