Trying to calculate the percentage of carbon emissions that is offset by 45,000 acres?
What kind of forest, 45,000 acres of What?
If it's boreal forest it's a slow carbon sink
If its tropical, it'll be faster
Forests are largely carbon neutral in terms of carbon emissions. In temperate forests they emit carbon when they go inert for the season.Trees are roughly 50% carbon (dry weight) by mass. Increases in standing timber are directly correlated with increases in bound carbon. But once those trees die they decompose to anerobic co2 again. To grow a pound of wood, a tree uses 1.47 pounds of carbon dioxide and gives off 1.07 pounds of oxygen. An acre of trees might grow 4,000 pounds of wood in a year, using 5,880 pounds of carbon dioxide and giving off 4,280 pounds of oxygen in the process. However deciduous temperate forests put out co2. Tree's with Long life spans and ideal growing conditions are however better carbon sinks, as they accumulate cellulose they sequester carbon. Once they're mature they slow down and become carbon neutral. Trees that largely never stop growing are good carbon sinks
Redwoods
Eucalyptus
douglas fir
Lawson cypress

Tall Tropical specimens
Koompassia
Menara
Bertholletia (Brazil Nut)