Which value represents the stand's trees per acre?

Which value represents the stand's trees per acre?

• A. 130 TPA
• B. 200 TPA
• C. 154 TPA
• D. 125 TPA

Answer: (C)

The idea being tested is how to express stand density as trees per acre. Trees per acre is a density measure you get by counting the number of trees in a known-area plot and then scaling to one acre. The basic calculation is TPA = (trees counted) / (area of plot in acres). So if your plot was smaller than an acre and you counted enough trees to, when scaled up, land at about 154 trees per acre, that is the density estimate for the stand. The other values would require counts or plot sizes that don’t align with the measurements you took, so they don’t match the observed density.

The idea being tested is how to express stand density as trees per acre. Trees per acre is a density measure you get by counting the number of trees in a known-area plot and then scaling to one acre. The basic calculation is TPA = (trees counted) / (area of plot in acres). So if your plot was smaller than an acre and you counted enough trees to, when scaled up, land at about 154 trees per acre, that is the density estimate for the stand. The other values would require counts or plot sizes that don’t align with the measurements you took, so they don’t match the observed density.