Certified Forester Practice Exam

What measurement tool is commonly used in point sampling to evaluate tree inclusion?

1. Handheld saw

2. Micrometer

3. Pedometer

4. Prism or angle gauge

The correct answer is: Prism or angle gauge

In point sampling, the prism or angle gauge is a crucial tool used to determine tree inclusion based on the tree's position relative to a specific point in the forest. This method relies on the concept of basal area calculations, where the tool indicates whether a tree should be included in the sample based on its diameter and the angle at which it is viewed. Using the prism or angle gauge establishes a fixed point and helps assess the standing trees within a certain radius. It provides a visual or angular assessment that allows foresters to efficiently choose which trees to measure for their growth, health, and overall contribution to the stand. The tool's design helps foresters quickly ascertain whether a tree is within the sample area by allowing light penalty calculations based on its angle, facilitating an accurate and efficient sampling process. The other tools listed, like a handheld saw, micrometer, or pedometer, do not apply directly to the concept of point sampling in forestry or the evaluation of tree inclusion specifically, as they serve different functions in forest management and measurement practices.