Analysis of Digital Elevation Model and LNDSAT Data Using Geographic Information System for Soil Mapping in Urban Areas - Natural Resources

NR > Vol.8 No.12, December 2017

Volume 8, Issue 12 (December 2017)

ISSN Print: 2158-706X ISSN Online: 2158-7086

Google-based Impact Factor: 0.96 Citations

Analysis of Digital Elevation Model and LNDSAT Data Using Geographic Information System for Soil Mapping in Urban Areas ()

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DOI: 10.4236/nr.2017.812047 1,958 Downloads 5,146 Views Citations

Author(s)

Mohamed Ali Mohamed

Affiliation(s)

Laboratory of Geomorphology, Soil Geography and Quaternary Research, Department of Geography, Humboldt University of Berlin, Berlin, Germany.

ABSTRACT

This study applies digital analysis methods of topographic data derived from digital elevation models (DEMs) and Landsat remotely sensed spectral data using GIS tools to evaluate the quality and limitations of the morphometric parameters (terrain attributes: TAs). This aims to check its suitability for digital soil mapping (DSM) and survey in urban areas at the target scale 1:50,000. This scale represents the standard scale level for compiling soil inventories within all German states. The study is conducted on an urban area of 112.68 km² in the southwest part of the state of Berlin in Germany. These relief units are the basis for determining the soil mapping units at the scale of 1:50,000. The generated preliminary soil map was compared to soil maps made using traditional soil survey methods. For the mainly natural soils, the equivalence area is 94.91%, and for the anthropogenic soils, the equivalence area is 95.34%. The proposed methodology is adequate for preliminary mapping of soil units based on the digital derivation of TAs. Landsat scenes are spatially explicit, physical representations of environmental covariates on the land surface. The free DEM-ASTER in combination with Landsat OLI images is found to be the appropriate model to represent the terrain surface and derive the TAs for environmental modeling and fitting of derivation the relief units and their topography features. However, the 30 m spatial resolution and the fairly coarse spectral resolution of DEMs and Landsat images limit their utility for digital soil mapping at this scale in urban areas with little topographic variation.

KEYWORDS

Soil Mapping, Soil Survey, Terrain Modeling, Terrain Attributes, Spatial Analysis, DEM

Share and Cite:

Mohamed, M. (2017) Analysis of Digital Elevation Model and LNDSAT Data Using Geographic Information System for Soil Mapping in Urban Areas. Natural Resources, 8, 767-787. doi: 10.4236/nr.2017.812047.

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