Certified Forester Practice Exam

What method is used in point sampling to determine which trees are included in the tally?

1. Measuring tree height directly

2. Using angle gauge or prism tools

3. Counting only the largest trees

4. Estimating based on satellite imagery

The correct answer is: Using angle gauge or prism tools

Point sampling is a method commonly used in forestry for inventory and management purposes. The technique relies on the principle of determining which trees are included in the tally by observing them from a specific point using an angle gauge or prism tools. These tools allow foresters to assess the trees' relative size and distance from the sampling point. When a tree's angular size exceeds a predetermined threshold defined by the angle gauge or prism, it is counted as part of the sample. This method is efficient because it enables a forester to quickly assess a large area without the need to measure each tree individually. It effectively captures information about forest density and composition while minimizing the need for extensive fieldwork and heavy equipment. The other options do not accurately describe the point sampling method: measuring tree height directly is unrelated, counting only the largest trees neglects smaller specimens that may be significant, and estimating based on satellite imagery does not involve the physical presence needed for accurate point sampling assessments.