Metric · draft
A measurable indicator (students often call it a KPI) used as evidence for a design decision.
| Category | Biodiversity |
| Unit | index 0–1 |
| How it is calculated | Σ(area of each surface type × its ecological weighting factor) ÷ total site area (Berlin BAF method). |
| Origin | adapted |
| Standard | Berlin Biotope Area Factor (BAF) |
| Status | draft |
Also known as: BAF
What it measures
Single number for the ecological quality of a site’s surfaces.
Calculation
Σ(area of each surface type × its ecological weighting factor) ÷ total site area (Berlin BAF method).
Connections
- Used in case studies: Hynek Hrabík
- Tools that can calculate it: Grasshopper
- Informs decisions on: Biodiversity and ecological connectivity on logistics sites, Stormwater and sealed surfaces on logistics sites
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