Ecosystem Integrity

Assesses the overall health of an ecosystem with focus on structure, composition and function.

unit

Index values ranging from 0 (degraded) to 100 (intact)

historic data availability

description

The Ecosystem Integrity Index (EII) is a composite measure designed to assess the integrity of terrestrial ecosystems, defined as the combination of three key components: structural, compositional, and functional integrity. The EII provides a quantitative score, ranging from 0 (highly degraded) to 1 (fully intact), allowing for the measurement, monitoring, and reporting of ecosystem health.

methodology

This implementation of the EII follows a framework published by UNEP WCMC (Hill et al, 2022). It quantifies the subcomponents of compositional intactness (Biodiversity Intactness Index), structural intactness (derived from Global Human Modification footprint) and functional integrity (based on remotely-sensed net primary productivity from Sentinel 3). The operational spatial resolution is 300m. Data will be updated annually.