Above-ground forest biomass in Guam
Guam: Above-ground forest biomass was 80.3 tonnes per hectare in 2025. ▼ Falling
Above-ground forest biomass in Guam, 1990–2025
Source: Food and Agriculture Organization of the United Nations – processed by Our World in Data. Measured in tonnes per hectare.
Analysis
Guam recorded 80.3 tonnes per hectare for above-ground forest biomass in 2025. That is the lowest value across all 10 years on record.
The figure is unchanged over ten years.
Over the whole period, above-ground forest biomass in Guam peaked at 116.67 tonnes per hectare in 1990 and was at its lowest, 80.3 tonnes per hectare, in 2015.
Guam ranks 143rd of 215 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 10 years of available data.
Above-ground forest biomass in Guam, year by year
| Year | tonnes per hectare | Change |
|---|---|---|
| 1990 | 116.67 tonnes per hectare | — |
| 2000 | 116.67 tonnes per hectare | +0.0% |
| 2010 | 116.67 tonnes per hectare | +0.0% |
| 2015 | 80.3 tonnes per hectare | -31.2% |
| 2016 | 112 tonnes per hectare | +39.5% |
| 2017 | 112 tonnes per hectare | +0.0% |
| 2018 | 112 tonnes per hectare | +0.0% |
| 2019 | 112 tonnes per hectare | +0.0% |
| 2020 | 80.3 tonnes per hectare | -28.3% |
| 2025 | 80.3 tonnes per hectare | +0.0% |
Guam compared with similar countries
- Guam's 80.3 tonnes per hectare is below the median for high income countries, which is 128.87 tonnes per hectare, 62% of the median. (74 countries reporting)
- Guam's 80.3 tonnes per hectare is below the median for East Asia & Pacific, which is 147 tonnes per hectare, 55% of the median. (33 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 116.67 tonnes per hectare | 116.67 tonnes per hectare | 116.67 tonnes per hectare | 1 |
| 2000s | 116.67 tonnes per hectare | 116.67 tonnes per hectare | 116.67 tonnes per hectare | 1 |
| 2010s | 107.5 tonnes per hectare | 80.3 tonnes per hectare | 116.67 tonnes per hectare | 6 |
| 2020s | 80.3 tonnes per hectare | 80.3 tonnes per hectare | 80.3 tonnes per hectare | 2 |
Countries ranked near Guam
- 140 Dominican Republic 82.7 tonnes per hectare compare
- 141 Eswatini 82.57 tonnes per hectare compare
- 142 Sierra Leone 82 tonnes per hectare compare
- 144 Puerto Rico 80.11 tonnes per hectare compare
- 145 Samoa 79.62 tonnes per hectare compare
- 146 India 79 tonnes per hectare compare
More environment data for Guam
- Historical exposure to drought — Land soil moisture anomaly 0.5909 Percentage change (2025)
- Paper and paperboard — Import quantity 461 t (2024)
- Wood-based panels — Import quantity 1,035 m3 (2024)
- Wood-based panels — Import value 445 1000 USD (2024)
- Plywood and LVL — Import quantity 1,033 m3 (2024)
- Plywood and LVL — Import value 434 1000 USD (2024)
- Paper and paperboard — Export quantity 0 t (2024)
- Graphic papers — Import quantity 430 t (2024)
- Paper and paperboard — Export value 1 1000 USD (2024)
- Veneer sheets — Import quantity 0 m3 (2024)
Frequently asked questions
- What is above-ground forest biomass in Guam?
- Above-ground forest biomass in Guam was 80.3 tonnes per hectare in 2025, according to Food and Agriculture Organization of the United Nations – processed by Our World in Data.
- What is the highest above-ground forest biomass recorded in Guam?
- The highest recorded value was 116.67 tonnes per hectare in 1990.
- What is the lowest above-ground forest biomass recorded in Guam?
- The lowest recorded value was 80.3 tonnes per hectare in 2015.
- How does Guam rank for above-ground forest biomass?
- Guam ranks 143rd out of 215 countries with data for 2025.
- Is above-ground forest biomass rising or falling in Guam?
- Over the last ten years it is unchanged. The long-run trend across the full record is falling.
- Where does this Guam data come from?
- The figures come from Food and Agriculture Organization of the United Nations – processed by Our World in Data, published as part of Above-ground forest biomass. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 10 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Above-ground biomass in forest (tonnes per hectare).