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Soil Erodibility Effect on Sediment Producing in Aras Sub Watershed |
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L. Imanparast and D. Hassanpanah |
Abstract:
The direct measurement of erosion is very difficult
and expensive. So use of erosion and sediment models is important to determine
the amount of soil erosion. To determine the soil erodibility, has taken
300 soil samples from different fields with 0-12 cm depth that are located
in the Aras sub watershed in North West of Iran in 2005-2006. The soil
samples were analyzed and some factors such as soil texture, organic matter
were measured. By use of the factors the other factors such as soil structure
class, soil percolation class, total sand, fine sand, clay and silt percentage
was measured. The study used the soil structure class and percolation
to determine the soil erodibility. This study evaluates the effects of
soil erodibility and the factors on sediments amount in the hydrological
watersheds that have station to measure the sediment. Soil erodibility
was measured by the formula follow this: 100K = 2.1M 1.4x0-4xz(12
- % OM)+3.25(S-2)+(P-3). Soil erodibility and some factors such as soil
organic matter, fine sand percentage and soil structure class can predict
the amount of soil erosion. Analysis of variance and the means comparisons
with LSD test was done by MSTATC software. Linear correlation coefficients
between different traits were done by SPSS software. The variance analysis
results of the studied attributes showed that there is significant difference
among the erodibility, fine sand and soil structure class. The studied
location mean showed that Mashiran, Pole Almasi and Borran station in
comparison the other locations, had the most erodibility. Soil erodibility
cannot be the factor that has effect on the sediment producing in a station,
alone. This factor must be evaluated with other factors such as soil organic
matter, soil fine sand percentage, soil structure class, watershed area,
topography and plant cover. In the prospective research, we should improve
method to measure and calculate soil erodibility, strengthen the research
on the mechanism of soil erodibility and conduct research on soil erodibility
by both water and wind agents.
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How to cite this article:
L. Imanparast and D. Hassanpanah, 2010. Soil Erodibility Effect on Sediment Producing in Aras Sub Watershed. Research Journal of Environmental Sciences, 4: 187-192.
DOI: 10.3923/rjes.2010.187.192
URL: https://scialert.net/abstract/?doi=rjes.2010.187.192
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