Length of protected land boundary shared with the organization's protected land as of the end of the reporting period.
Organizations should footnote all assumptions used. See usage guidance for further information.
This metric is intended to capture the length of the boundary of the organization's protected land that is 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, disconnected pieces of conserved land. This metric helps capture holistically how a specific project complements previous conservation work.
June 2022 - IRIS v5.3 Released (current version)
Immaterial change. Minor revision to usage guidance for clarity.
January 2020 - IRIS v5.1 Released
No change.
May 2019 - IRIS v5.0 Released
No change.
March 2016 - IRIS v4.0 Released
Immaterial change. Length of Adjacent Protected Land (PI2135) replaced Protected Land Adjacency (PI2135). Minor revision to metric name and definition language for clarity.
March 2014 - IRIS v3.0 Released
New metric. Protected Land Adjacency (PI2135) was developed via the IRIS Land Conservation Working Group.
IRIS Metrics Work Better in Sets
To use IRIS metrics—and the resulting data—to understand impact performance, IRIS metrics should be used and analyzed in generally accepted sets and according to well-defined objectives. IRIS+ gives you access to generally accepted Core Metrics Sets aligned to common Impact Themes and Sustainable Development Goals (SDGs).