Tool Name	Fragmentation (Alternative)
Tool ID	16
Library ID	grid_analysis
Version	1.0
Author(s)	O.Conrad (c) 2008

Description

(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.https://www.srs.fs.usda.gov/pubs/ja/ja_riitters006.pdf.

Parameters

Name	Type	Identifier	Description	Constraints
Input
Classification	grid, input	CLASSES
Output
Density [Percent]	grid, output	DENSITY	Density Index (Pf).
Connectivity [Percent]	grid, output	CONNECTIVITY	Connectivity Index (Pff).
Fragmentation	grid, output	FRAGMENTATION	Fragmentation Index
Summary	table, output, optional	FRAGSTATS
Options
Class Identifier	integer number	CLASS		Default: 1
Neighborhood	value range	NEIGHBORHOOD	Moving window size = 1 + 2 * Neighborhood.
Level Aggregation	choice	AGGREGATION		Available Choices: [0] average [1] multiplicative Default: 0
Add Border	boolean	BORDER		Default: 0
Connectivity Weighting	floating point number	WEIGHT		Minimum: 0.000000 Default: 1.100000
Minimum Density [Percent]	floating point number	DENSITY_MIN		Minimum: 0.000000 Maximum: 100.000000 Default: 10.000000
Minimum Density for Interior Forest [Percent]	floating point number	DENSITY_INT	if less than 100, it is distinguished between interior and core forest	Minimum: 0.000000 Maximum: 100.000000 Default: 99.000000
Search Distance Increment	floating point number	LEVEL_GROW		Minimum: 0.000000 Default: 1.000000
Density from Neighbourhood	boolean	DENSITY_MEAN		Default: 1