Tree Planting Offset Calculator — 公式
## How to Calculate Trees Needed to Offset CO2
Trees absorb CO2 through photosynthesis and store carbon in their biomass.
### Average Sequestration
A mature tree absorbs roughly 22 kg (48 lbs) of CO2 per year, though this varies widely by species, age, and climate.
### Formula
**Trees Needed = (CO2 in metric tons * 1,000) / kg absorbed per tree per year**
Note that young trees absorb less; it takes 5-10 years for a sapling to reach average absorption rates.
Trees absorb CO2 through photosynthesis and store carbon in their biomass.
### Average Sequestration
A mature tree absorbs roughly 22 kg (48 lbs) of CO2 per year, though this varies widely by species, age, and climate.
### Formula
**Trees Needed = (CO2 in metric tons * 1,000) / kg absorbed per tree per year**
Note that young trees absorb less; it takes 5-10 years for a sapling to reach average absorption rates.
计算示例
Offset 10 metric tons of CO2 per year with trees absorbing 22 kg each at $3 per tree.
- CO2 in kg: 10 * 1,000 = 10,000 kg
- Trees needed: ceil(10,000 / 22) = 455 trees
- Total cost: 455 * $3 = $1,365
- Cost per ton: $1,365 / 10 = $136.50/ton