Este trabalho se propos a generalizar as redes de drenagens extraidas dos modelos SRTM e ASTER GDEM
usando os operadores de simplificacao e suavizacao.
The imported layers of wetlands in Global mapper were imposed on the ASTER GDEM
V2 worldwide elevation data (1 Arc second resolution) to get three-dimensional measurements of the water bodies.
Features considered Source Urban areas Landsat 7 satellite image Forest areas Landsat 7 satellite image Topography (slope, CGIAR-CSI DEM of 90 m aspect) resolution/Aster GDEM
of 30 m Hydrology ASTER GDEM
Vegetation Landsat 7 satellite image National parks National parks map Features considered Method of creation Urban areas Unsupervised classification Forest areas Supervised classification Topography (slope, Import via GIS (grid) and Erdas (raster) aspect) Hydrology Geoprocessing tool/hydrology tool in GIS Vegetation Normalized difference vegetation index (NDVI) National parks Digitizing/georeferencing Table 6: Criteria weights in sensitivity analysis when one factor's weight is changed from original weight (i.e., base map) by -18, -12, -6, 6, 12, or 18%.
Excluded layers were produced using GDEM
, an ecoenvironmental conservation value assessment map (ECVAM), water bodies, the greenbelt zone, and the zone eliminated from the greenbelt.
A digital elevation model (DEM) was constructed using GIS software and information obtained from ASTER GDEM
V2 (NASA, 2011).
ASTER Global Digital Elevation Model version 2.0 (ASTER GDEM
Digital Elevation Model (DEM) data were acquired from the Japanese-American satellite ASTER GDEM
. The used DEM is validated by the provider and ASTER GDEM
is highly accurate DEM covering all the land on earth with 30 m spatial resolution.
Relieve, Altimetria y Pendientes: fueron generados a partir del Modelo Digital de Elevacion (MDE) basado en el ASTER Global Digital Elevation Model (GDEM
) (Ver figura 3).
This cartographic database comprised a 30m horizontal resolution ASTER GDEM
digital elevation model (DEM) (ABRAMS et al., 1999), and vector layers of the soil map and stream network.