Nigeria vs Sierra Leone: Protected area coverage of mountain key biodiversity areas
Nigeria
57.1%
in 2025
Sierra Leone
60.7%
in 2025
Nigeria rank
75th
Sierra Leone rank
73rd
Protected area coverage of mountain key biodiversity areas over time
- Nigeria
- Sierra Leone
How they compare
Sierra Leone currently reports 60.7% against 57.1% in Nigeria, a difference of 3.6%.
That makes Sierra Leone's figure about 1.1 times Nigeria's.
Across all 26 years both countries report, Sierra Leone has been ahead every year.
Nigeria ranks 75th and Sierra Leone ranks 73rd of 184 countries.
Sierra Leone has averaged higher in every one of the 3 decades both report.
Head to head by decade
| Decade | Nigeria | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 2000s | 49.8% | 55.1% | 5.3% | Sierra Leone |
| 2010s | 49.8% | 59.6% | 9.8% | Sierra Leone |
| 2020s | 57.1% | 60.7% | 3.5% | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher protected area coverage of mountain key biodiversity areas, Nigeria or Sierra Leone?
- Sierra Leone, at 60.7% against 57.1% in Nigeria as of 2025.
- What is the difference in protected area coverage of mountain key biodiversity areas between Nigeria and Sierra Leone?
- 3.6%, with Sierra Leone ahead.
- How many years of comparable data are there for Nigeria and Sierra Leone?
- 26 years are reported by both, from 2000 to 2025.
- How do Nigeria and Sierra Leone rank globally for protected area coverage of mountain key biodiversity areas?
- Nigeria ranks 75th and Sierra Leone ranks 73rd of 184 countries.
- Where does this data come from?
- BirdLife International, IUCN and UNEP-WCMC – processed by Our World in Data, published as Protected area coverage of mountain key biodiversity areas. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Average proportion of Mountain Key Biodiversity Areas (KBAs) covered by protected areas (%).