Certified Forester Practice Exam

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Gross Increment including growth measures what factor in forest biomass?

The total volume and growth of the stand
The increase or decrease in tree height
The mortality and ingrowth of trees
The change in species composition

The correct answer is: The total volume and growth of the stand

Gross Increment refers to the total increase in volume of trees in a stand over a specified period, without taking into account any losses due to factors such as mortality or harvest. Therefore, the concept encompasses both the existing volume of the trees and any new growth that has occurred during the assessment period. This measure is crucial for understanding the productivity of a forest stand and is essential for effective forest management and planning. By knowing the total volume and growth of the stand, foresters can make informed decisions regarding thinning, harvesting, and overall management to maintain or enhance the health and productivity of the forest. The other options, while relevant factors in forest biomass and management, do not align with the definition of Gross Increment as it specifically involves measuring the overall productive capacity of a forest in terms of volume over time.