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 |
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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 |