Fragmentation (Standard)

(c) 2008 by O.Conrad
Grid based fragmentation analysis after Riitters et al. (2000).

(1) interior, if Density = 1.0
(2) undetermined, if Density > 0.6 and Density = Connectivity
(3) perforated, if Density > 0.6 and Density - Connectivity > 0
(4) edge, if Density > 0.6 and Density - Connectivity < 0
(5) transitional, if 0.4 < Density < 0.6
(6) patch, if Density < 0.4


References:
Riitters, K., Wickham, J., O'Neill, R., Jones, B., Smith, E. (2000):
Global-scale patterns of forest fragmentation. Conservation Ecology 4(2): 3
http://www.ecologyandsociety.org/vol4/iss2/art3/

Parameters

Grid system
Grid system
Grid system
Classification
Input Grid
Density [Percent]
Output Grid
Density Index (Pf).
Connectivity [Percent]
Output Grid
Connectivity Index (Pff).
Fragmentation
Output Grid
Fragmentation Index
Summary
Output Table
Class Identifier
Integer
Neighborhood
Value range
Moving window size = 1 + 2 * Neighborhood.
Minimum: 1.51548668549e-316; Maximum: 1.51542344509e-316
Level Aggregation
Choice
Available choices: average, multiplicative
Add Border
Boolean
Connectivity Weighting
Floating point
Minimum Density [Percent]
Floating point
Maximum: 100.0
Minimum Density for Interior Forest [Percent]
Floating point
if less than 100, it is distinguished between interior and core forest
Maximum: 100.0
Neighborhood Type
Choice
Available choices: square, circle
Include diagonal neighbour relations
Boolean