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http://dx.doi.org/10.7319/kogsis.2016.24.3.085

Improving the Slope Calculation Method for Evaluating the Feasibility of the Land Development  

Lee, Byoung Kil (Department of Civil Engineering Kyonggi University)
Publication Information
Journal of Korean Society for Geospatial Information Science / v.24, no.3, 2016 , pp. 85-92 More about this Journal
Abstract
Slope is one of the most important factor in land development permission standards. In guideline of "Land Suitability Assessment" or "Forest Land Conversion Standard", average slope can be measured using digital map and GIS for target area. Inputs in slope calculation are 1/5,000 digital map of NGII(National Geographic Information Institute) or digital information of Korea Land Information System. Many confusions occur in the field, as there is no standard for slope calculation and are lots of slope calculation methods using contour lines or DEM derived from them. Avoiding these confusions, this study was intended to propose a standardized method for slope calculation and a selection method for a suitable resolution. In this study, using DEM of optimum grid size according to the complexity of topography with finite difference method is suggested as improved slope calculation method, after comparing several representative slope calculation methods.
Keywords
Slope; Forest Land Conversion; Land Suitability Assessment; DEM; Finite Difference Method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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