Scale

Name of landscape metric

Abbreviations

Description

Unit

Area-Edge indices

Class

Class percent of landscape

PLAND

The proportion of total is occupied by a particular patch type: It a measures of dominance of patch type.

Percent

Landscape/Class

Largest Patch Index

LPI

The proportion of total area occupied by the largest patch of a patch type.

Percent

Landscape/Class

Patch Size Coefficient of Variation

AREA_CV

Patch size standard deviation divided by the mean patch size; a measure of relative variability. CV (coefficient of variation) equals the standard deviation divided by the mean, multiplied by 100 to convert to a percentage, for the corresponding patch metric.

None

Landscape/Class

Edge Density

ED

Describe the distance of an ecosystem from its centroid (the center of the patch).

m/ha

Shape index

Landscape/Class

Area-Weighted Mean Shape Index

SHAPE_AM

A mean patch-base shape weighted by patch size.

None

Aggregation Indices

Landscape/Class

Number of Patches

NP

Express the number of patches identified for each class.

None

Landscape/Class

Patch Density

PD

The number of patches of per hectare.

#100 ha

Landscape/Class

Landscape Shape Index

LSI

The landscape boundary and total edge within the landscape divided by the total area, adjusted by a constant for a square standard.

None

Landscape/Class

Patch Cohesion Index

COHESION

Patch cohesion index at the class level measures the physical connectedness of the corresponding patch type.

None

Landscape

Clumpiness Index

CLUMPY

Clumpiness index is calculated from the adjacency matrix, which shows the frequency with which different pairs of patch types (including like adjacencies between the same patch type) appear side-by-side on the map. Clumpiness is scaled to account for the fact that the proportion of like adjacencies (Gi) will equal Pi for a completely random distribution.

Percent

Diversity and connectivity indices

Landscape

Patch richness

PR

This index reflects the number of patch types (vegetation types) in the bauxite mining landscape. It is a measure of diversity of patch type.

None

Landscape

Shannon’s Diversity Index

SHDI

Express the proportional abundance of every patch of a certain type of patch multiplied by a proportion.

Information

Landscape

Perimeter Area Fractal Dimension Index

PAFRACMN

It reflects shape complexity across a range of spatial scales (patch sizes). Perimeter-area fractal dimension at the landscape level is identical to the class level.

None

Landscape

Radius of Gyration Area Weighted Mean

GYRATE_AM

Radius of gyration is a measure of patch extent (i.e., how far-reaching it is); thus, it is effected by both patch size and patch compaction.

Meters