External data

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How the Biodiversity Trends Explorer works:

• About the Biodiversity Intactness Index
• Assumptions and limitations
• Calculating uncertainty
• External data sets
• Using the Biodiversity Intactness Index in policy

External data sets 

Multiple external data sets are used to calculate the BII. 

Shared Socioeconomic Pathways  

The Shared Socioeconomic Pathways (SSPs) are five socio-economic development scenarios that include global projections of wealth, population, education, technology and reliance on fossil fuels. 

SSP1: Sustainable development 

SSP2: Middle of the road development 

SSP3: Regional rivalry  

SSP4: Inequality  

SSP5: Fossil-fuelled development 

Read more about the SSPs in The Shared Socioeconomic Pathways and their energy, land use, and greenhouse gas emissions implications: An overview (Riahi et all, 2017). 

Land-use harmonization (LUH2)

The Land-Use Harmonization (LUH2) project has produced a harmonized set of land-use scenarios that smoothly connects the historical reconstructions of land-use with the future projections in the format required for Earth System Models.

Read more about LUH2 in Harmonization of global land use change and management for the period 850–2100 (LUH2) for CMIP6 (Hurtt et all, 2020).

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Using the Biodiversity Intactness Index in policy