These maps were created for Advanced GIS Applications (ENVS 421)
Conducted a volumetric change analysis using 3D analyst.
This map shows the change in vegetative cover of Bellingham, Washington for a recent ten year period. This was done by stacking Landsat data layers into a multispectral satellite image using composite bands, then creating a “7, 4, 2″ image (7 = short-wave infrared, 4 = near infrared, and 2 = green. Altered color representation to red, green, and blue). I then calculated the Normalized Difference Vegetation Index (NDVI) for both the 1998 and 2008 imagery (NDVI = NIR – Red) / (Red – NIR). The difference was calculated by subtracting the values for 2008 from those for 1998.This map was created from Landsat imagery using supervised classification. I began with a false color composite and used a series of training samples to assign each raster cell a specific class – in this case those classes were land cover types such as residential, forest, urban (or built), field (or grassland), water, and tidal marsh. Based on the samples I provided, ArcGIS assigned values to each cell in the dataset.
