What is the difference in above-ground forest biomass between Guam and Puerto Rico?

0.19 tonnes per hectare, with Guam ahead.

How many years of comparable data are there for Guam and Puerto Rico?

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 Puerto Rico: Above-ground forest biomass

Guam

80.3 tonnes per hectare

in 2025

Puerto Rico

80.11 tonnes per hectare

in 2025

Guam rank

143rd

Puerto Rico rank

144th

Above-ground forest biomass over time

Guam
Puerto Rico

How they compare

Guam currently reports 80.3 tonnes per hectare against 80.11 tonnes per hectare in Puerto Rico, a difference of 0.19 tonnes per hectare.

The two have swapped places 4 times across 10 shared years of data; in 1990 it was Guam ahead.

Guam ranks 143rd and Puerto Rico ranks 144th of 215 countries.

Across the 4 decades both report, Guam averaged higher in 3 and Puerto Rico in 1.

Head to head by decade

Decade	Guam	Puerto Rico	Difference	Ahead
1990s	116.67 tonnes per hectare	62.17 tonnes per hectare	54.5 tonnes per hectare	Guam
2000s	116.67 tonnes per hectare	70.84 tonnes per hectare	45.83 tonnes per hectare	Guam
2010s	107.5 tonnes per hectare	80.42 tonnes per hectare	27.08 tonnes per hectare	Guam
2020s	80.3 tonnes per hectare	83.59 tonnes per hectare	3.29 tonnes per hectare	Puerto Rico

Averages of every year both report within each decade.

Frequently asked questions

Which has higher above-ground forest biomass, Guam or Puerto Rico?: Guam, at 80.3 tonnes per hectare against 80.11 tonnes per hectare in Puerto Rico as of 2025.
What is the difference in above-ground forest biomass between Guam and Puerto Rico?: 0.19 tonnes per hectare, with Guam ahead.
How many years of comparable data are there for Guam and Puerto Rico?: 10 years are reported by both, from 1990 to 2025.
How do Guam and Puerto Rico rank globally for above-ground forest biomass?: Guam ranks 143rd and Puerto Rico ranks 144th 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 Puerto Rico: 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/puerto-rico-us/

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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).