What is the difference in above-ground forest biomass between Guam and Sierra Leone?

1.7 tonnes per hectare, with Sierra Leone ahead.

How many years of comparable data are there for Guam and Sierra Leone?

10 years are reported by both, from 1990 to 2025.

Where does this data come from?

Food and Agriculture Organization of the United Nations – processed by Our World in Data, published as Above-ground forest biomass. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Guam vs Sierra Leone: Above-ground forest biomass

Guam

80.3 tonnes per hectare

in 2025

Sierra Leone

82 tonnes per hectare

in 2025

Guam rank

143rd

Sierra Leone rank

142nd

Above-ground forest biomass over time

Guam
Sierra Leone

How they compare

Sierra Leone currently reports 82 tonnes per hectare against 80.3 tonnes per hectare in Guam, a difference of 1.7 tonnes per hectare.

The two have swapped places 3 times across 10 shared years of data; in 1990 it was Guam ahead.

Guam ranks 143rd and Sierra Leone ranks 142nd of 215 countries.

Across the 4 decades both report, Guam averaged higher in 3 and Sierra Leone in 1.

Head to head by decade

Decade	Guam	Sierra Leone	Difference	Ahead
1990s	116.67 tonnes per hectare	82 tonnes per hectare	34.67 tonnes per hectare	Guam
2000s	116.67 tonnes per hectare	82 tonnes per hectare	34.67 tonnes per hectare	Guam
2010s	107.5 tonnes per hectare	82 tonnes per hectare	25.5 tonnes per hectare	Guam
2020s	80.3 tonnes per hectare	82 tonnes per hectare	1.7 tonnes per hectare	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher above-ground forest biomass, Guam or Sierra Leone?: Sierra Leone, at 82 tonnes per hectare against 80.3 tonnes per hectare in Guam as of 2025.
What is the difference in above-ground forest biomass between Guam and Sierra Leone?: 1.7 tonnes per hectare, with Sierra Leone ahead.
How many years of comparable data are there for Guam and Sierra Leone?: 10 years are reported by both, from 1990 to 2025.
How do Guam and Sierra Leone rank globally for above-ground forest biomass?: Guam ranks 143rd and Sierra Leone ranks 142nd of 215 countries.
Where does this data come from?: Food and Agriculture Organization of the United Nations – processed by Our World in Data, published as Above-ground forest biomass. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Guam vs Sierra Leone: Above-ground forest biomass. Statizoid, drawing on Food and Agriculture Organization of the United Nations – processed by Our World in Data. Retrieved 03 October 2026, from https://environment.statizoid.com/compare/above-ground-biomass-in-forest-per-hectare/guam/sierra-leone/

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About this data

Indicator: Above-ground forest biomass
Unit: tonnes per hectare
Source: Food and Agriculture Organization of the United Nations – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 215 places, 1,311 data points, 1990–2025
Last refreshed: 18 September 2026

Above-ground biomass in forest (tonnes per hectare).