(L125) Patch Richness Density

m =     number of patch types (classes) present in the landscape, excluding the landscape border if present.

A =     total landscape area (m²).

Description

PR equals the number of different patch types present within the landscape boundary divided by total landscape area (m²), multiplied by 10,000 and 100 (to convert to 100 hectares). Note, total landscape area (A) includes any internal background present.

Units 

Number per 100 hectares

Range

PRD > 0, without limit

Comments

Patch richness density standardizes richness to a per area basis that facilitates comparison among landscapes. Note, this metric is redundant with both patch richness and relative patch richness.