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Paper Information

Journal:   ENVIRONMENTAL EROSION RESEARCHES   SPRING 2011 , Volume 1 , Number 1; Page(s) 29 To 43.
 
Paper: 

THE STUDY OF PHYSICAL - CHEMICAL CHARACTERISTICS AND MORPHOMETERY OF GULLYING AREA (CASE STUDY: GEZIR, HORMOZGAN PROVINCE)

 
 
Author(s):  NOHEGAR A., HEYDARZADEH M.
 
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Abstract: 

Gezir Watershed is located in Hormozgan Province and its area, is 225/05 km2, is one of the famous and significant watershed in this province because of its gully erosion "Gully erosion development in agricultural lands" and "high dependence of local people livelihood into agriculture" are two main reasons for choosing this watershed as the case study. In this research is study soil characteristics and catchment's topography and their relationship with information and morphometry of Gullies.
According to the gully erosion analysis morphologic characteristic of gullies were measured and their profiles were delineated; soil characters such as PH, SAR, salinity and also silt, lime, and clay percentages were measured; and data relating to well drainage and discharge were collected. Results show that increasing the soil and water salinity, decreasing the underground water table, rainfall shortage, and also intense short duration rainfall are the main factors caused to gully development in Gezir Watershed. According to soil characteristic measurements, increasing the silt and clay percentage is another reason for gully development. Consequently, some important environmental change occurred due to less traditional soil and water conservation such as increasing the gully area, well numbers, water salinity, ratio between inactive and active wells, salinity and usefulness, and decreasing the high annual discharge of wells.

 
Keyword(s): GULLY EROSION, MORPHOMETERY, GEZIR, SALINITY SOIL
 
References: 
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