Predicting soil map using Jenny equation
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2013, Vol 3, Issue 12
Abstract
Today, with rapid advancement of technology, many methods have been developed to soil mapping that now we know them as digital soil mapping (DSM). Each of these methods is based on mapping rules and specific characterizations of region that can distinguishe the different soils. Soil forming factors that control the direction and speed of soil formation have been expressed in Jenny’s equation. These are climate, organism, topography, parent material and time. These factors do not act in isolation but always together which set limits to the operation as a whole. The aim of this study is predicting the soil map using this equation. So, the factors in the Jenny equation converted as a data layer in GIS and then used to predict the soil map using ENVI (4.7) software. To estimate the correct selection of soil forming factors as data layer, other parameters derived of DEM were selected and then were used to predict the soil map. Results showed that the highest accuracy of predicted soil map is when the soil forming factors are used.
Authors and Affiliations
Z. Alijani, F. Sarmadian
Keywords
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