Which measurement expresses stocking on an area basis?

Which measurement expresses stocking on an area basis?

• A. Basal area per acre
• B. The number of trees per acre
• C. Volume per acre
• D. Total height per acre

Answer: (B)

Stocking is about stand density—the number of trees occupying a given area. The measurement that directly expresses this density is the number of trees per acre, because it counts how many individual stems exist within each acre. Basal area per acre measures the total cross-sectional area of all trees at breast height and relates to size distribution and competition, not just the count of trees. Volume per acre reflects the amount of wood found per acre, not how many trees there are. Total height per acre sums heights but doesn’t indicate how many trees are present. So counting trees per acre best captures stocking on an area basis.

Stocking is about stand density—the number of trees occupying a given area. The measurement that directly expresses this density is the number of trees per acre, because it counts how many individual stems exist within each acre. Basal area per acre measures the total cross-sectional area of all trees at breast height and relates to size distribution and competition, not just the count of trees. Volume per acre reflects the amount of wood found per acre, not how many trees there are. Total height per acre sums heights but doesn’t indicate how many trees are present. So counting trees per acre best captures stocking on an area basis.