lsm_l_shdi function

SHDI (landscape level)

Shannon's diversity index (Diversity metric)

lsm_l_shdi(landscape)

Arguments

• landscape: A categorical raster object: SpatRaster; Raster* Layer, Stack, Brick; stars or a list of SpatRasters.

Returns

tibble

Details

where $P_{i}$ is the proportion of class i.

SHDI is a 'Diversity metric'. It is a widely used metric in biodiversity and ecology and takes both the number of classes and the abundance of each class into account.

Units

None

Range

SHDI >= 0

Behaviour

Equals SHDI = 0 when only one patch is present and increases, without limit, as the number of classes increases while the proportions are equally distributed

Examples

landscape <- terra::rast(landscapemetrics::landscape)
lsm_l_shdi(landscape)

References

McGarigal K., SA Cushman, and E Ene. 2023. FRAGSTATS v4: Spatial Pattern Analysis Program for Categorical Maps. Computer software program produced by the authors; available at the following web site: https://www.fragstats.org

Shannon, C., and W. Weaver. 1949. The mathematical theory of communication. Univ. IllinoisPress, Urbana

See Also

lsm_c_pland