The effect of some watershed, soil characteristics and morphometric factors on the relationship between the gully volume and length in Fars Province, Iran

Auteur(s) et Affiliation(s)

KOMPANI-ZARE, M.

Dep. of Desert Region Management, School of Agriculture, Univ., Shiraz, Iran, Republique Islamique d'

SOUFI, M.

Research Centerfor Agriculture and Natural Resources, Dep. of Watershed Management and Soil Conservation, Fars, Iran, Republique Islamique d'

HAMZEHZARGHANI, H.

Dep. of Plant Protection, College of Agriculture, Univ., Shiraz, Iran, Republique Islamique d'

DEHGHANI, M.

Dep. of Desert Region Management, School of Agriculture, Univ., Shiraz, Iran, Republique Islamique d'

Description :
A survey consisting of first order gullies selected from 5 sites with different land use, soil and watershed properties was carried out to estimate the parameters of the empirical power function in order to describe the relationship between the gully volume and length in Fars province. Subsequently, the gullies were clustered into 7 groups based on 9 morphometric factors. The linearized functions were fitted to the natural logarithms of the volume and length in each group. The results showed that the gully volume and average cross section are correlated with the gully depths in different sections and the gully head slopes. Also it was shown that the parameters of fitted functions to the plots of gully volumes versus gully lengths are proportional to width at the gully heads. The gully widths at the top and bottom of the 5 meter sections are correlated with the average upstream watershed area of the gullies.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2011, vol. 86, n°. 3, p. 150-159, nombre de pages : 10, Références bibliographiques : 32 ref.

Date :
2011

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais