lsm_l_core_mn: CORE_MN (landscape level)

In landscapemetrics: Landscape Metrics for Categorical Map Patterns

CORE_MN (landscape level)

Description

Mean of core area (Core area metric)

Usage

lsm_l_core_mn(
  landscape,
  directions = 8,
  consider_boundary = FALSE,
  edge_depth = 1
)

Arguments

landscape	Raster* Layer, Stack, Brick, SpatRaster (terra), stars, or a list of rasterLayers.
directions	The number of directions in which patches should be connected: 4 (rook's case) or 8 (queen's case).
consider_boundary	Logical if cells that only neighbour the landscape boundary should be considered as core
edge_depth	Distance (in cells) a cell has the be away from the patch edge to be considered as core cell

Details

CORE_{MN} = mean(CORE[patch_{ij}])

where CORE[patch_{ij}] is the core area in square meters of each patch.

CORE_MN is a 'Core area metric' and equals the mean of core areas of all patches in the landscape. The core area is defined as all cells that have no neighbour with a different value than themselves (rook's case).

Units

Hectares

Range

CORE_MN >= 0

Behaviour

Equals CORE_MN = 0 if CORE = 0 for all patches. Increases, without limit, as the core area indices increase.

Value

tibble

References

McGarigal, K., SA Cushman, and E Ene. 2012. FRAGSTATS v4: Spatial Pattern Analysis Program for Categorical and Continuous Maps. Computer software program produced by the authors at the University of Massachusetts, Amherst. Available at the following web site: https://www.umass.edu/landeco/

See Also

lsm_p_core, mean,
lsm_c_core_mn, lsm_c_core_sd, lsm_c_core_cv,
lsm_l_core_sd, lsm_l_core_cv

Examples

lsm_l_core_mn(landscape)

landscapemetrics documentation built on March 31, 2023, 7:28 p.m.