Evaluation of the quantitative effects of environmental parameters on occurance of gully erosion
Abstract
This research was conducted in chap chap- Ghomish Abad sub-basin, Zanjanroud basin, located in northwest of Zanjan. 32 gullies in the central part of the region were selected and studied using historical data extracted from aerial photos in 1956,1967 and 2001, and sattelite images in 1990 and 1998 and field observations. The analysis of data related to topography, geology, soil, vegetation, cover, landuse, weather and climatology were obtained from questionaines, sattelite images and aerial photos. Then dataset were incorporated in GIS (ILWIS), R S. The results showed that the content of sodium enhances the dispersion of particles, especially clay particles, in the soil. Higher content of organic carbon stablizes soil particles and limits the gully expansion. The area of forehead catchment as well as daily rainfall (I>12.5mm & 0.5in) have significant relation with longitudinal development of gullies.
(2009). Evaluation of the quantitative effects of environmental parameters on occurance of gully erosion. Iranian Journal of Natural Resources (Not Publish), 61(1), -.
MLA
. "Evaluation of the quantitative effects of environmental parameters on occurance of gully erosion". Iranian Journal of Natural Resources (Not Publish), 61, 1, 2009, -.
HARVARD
(2009). 'Evaluation of the quantitative effects of environmental parameters on occurance of gully erosion', Iranian Journal of Natural Resources (Not Publish), 61(1), pp. -.
VANCOUVER
Evaluation of the quantitative effects of environmental parameters on occurance of gully erosion. Iranian Journal of Natural Resources (Not Publish), 2009; 61(1): -.
', './data/ijnr/coversheet/cover_en.jpg'))