What is the recommended number of trees in a prism plot in a natural forest?

What is the recommended number of trees in a prism plot in a natural forest?

• A. 1-3 trees
• B. 5-12 trees.
• C. 20-30 trees
• D. 50-60 trees

Answer: (B)

In a prism plot used for natural forest inventories, you aim to sample a small, fixed number of trees per plot to get reliable estimates without spending excessive time measuring every tree. The recommended range is five to twelve trees because this many trees provide enough variation in species, size, and age to produce a stable estimate of volume and stand structure, while keeping fieldwork efficient. Too few trees (like one to three) leads to high sampling error and unrepresentative results; too many (twenty or more) adds workload with diminishing gains in precision. Five to twelve strikes the right balance for practical, comparable assessments across plots.

In a prism plot used for natural forest inventories, you aim to sample a small, fixed number of trees per plot to get reliable estimates without spending excessive time measuring every tree. The recommended range is five to twelve trees because this many trees provide enough variation in species, size, and age to produce a stable estimate of volume and stand structure, while keeping fieldwork efficient. Too few trees (like one to three) leads to high sampling error and unrepresentative results; too many (twenty or more) adds workload with diminishing gains in precision. Five to twelve strikes the right balance for practical, comparable assessments across plots.