Environmental GIS Nicholas A. Procopio, Ph.D, GISP

Question? Can we develop a measure of habitat integrity using land-cover data? What is the best way to evaluate this? What spatial tools will accommodate this analysis? Spatial analysis toolbox

Land-use/Land-cover data (2007)

…and rasterized!!!!

Notice the pixelization.

Spatial Analyses Reclassify Reclassifies (or changes) the values in a raster. Reclass cover types as habitat (1) or nonhabitat (0)

Spatial Analyses Focal Stat. Calculates for each input cell location a statistic of the values within a specified neighborhood around it.

Sum all the pixels in a 1000 meter radius surrounding each pixel. This value can than be normalized as a percentage of the maximum possible.

Focal Statistic Output

Intermediate steps… Convert to float values. {Float} Converts each cell value of a raster into a floating-point representation. (continuous value to floating point values). Recalculate as a percentage of window maximum. {Divide} Window max = 100 pixels radius, pi*100^2 = pixels

Focal Statistic Output, as a percentage habitat integrity?

X{times} habitat integrity less altered lands 0/1 data Cell value

Reclassify decimal values to categories.

10 meter DEM

Slope (three cell neighborhood)

Aspect

Aspect