Document Type : Research Paper
Authors
1 Associate pro. Faculty of Earth Science, Shahid Beheshti University, Tehran, I.R.IAN
2 Assistant Prof. Department of Geography, University of Mazandaran, Babolsar, I.R.IAN
3 Assistant Prof. Department of Natural Resource, Islamic Azad University, Nour branch, I.R.IAN
4 Expert of Soil Laboratory, Islamic Azad University, Chalos Branch, I.R.IAN
Abstract
Gully erosion is one of the most destructive types of hydraulic erosion and an important process in
soil destruction that in some cases creates long, vast, deep canals. Study area was located in the
northeastern Alborz, Mazandaran province and Nowshar County (Firozkola subbasin a portion of
Kojur watershed). This paper examines gully morphometery in relation with physical and chemical
characteristics of soil. The morphometery of gullies such as width, depth and slope were determined
in field. Physical and chemical properties of soil such as exchange cation (EC), organic and
inorganic carbon, soil acidity and soil texture were determined in the laboratory. Data analyses were
performed by Detrended correspondence analysis (DCA). The DCA analysis indicated that the
width and slope are correlated with OC and clay negatively but they have positive correlation with
pH. Hence, it's expected that following reduction of OC and clay and an increase in PH, gully width
boosts. Besides, if EC increases and CaCO3 decreases, depth and w/d ratio of gully will increase.
Keywords
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