Sectors of Focus

  • Environment
  • Land Conservation


  • Environment

Length of Adjacent Protected Land (PI2135)

Length of protected land boundary shared with the organization's protected land as of the end of the reporting period.
Reporting format
Unit of Measure (PD1602)
Metric type
Metric level
Product/Service, Organization
IRIS metric citation
IRIS, 2016. Length of Adjacent Protected Land (PI2135). v4.0.


Organizations should footnote all assumptions used. See usage guidance for further information.

Usage Guidance

  • The length of adjacent protected land is the length of the perimeter of the organization's protected land that is also on the perimeter of other protected land not controlled by the reporting organization.
  • This metric is intended to capture the boundary of protected lands which are immediately adjacent to already-protected land parcels, thus compounding the total amount of protected land.
  • For many conservation objectives, large, connected areas of conserved land are more valuable than small and disconnected pieces of conserved land. This metric helps capture holistically how a specific project complements previous conservation work.