Certified Forester Practice Exam

Which of the following statements is true regarding growing stock?

1. All stock consists of hardwood trees

2. Growing stock must have a DBH of 10 inches or more

3. Most timber volume comes from softwood growing stock

4. Growing stock can only be used for lumber

The correct answer is: Most timber volume comes from softwood growing stock

The statement that most timber volume comes from softwood growing stock is accurate due to the prevalence and wide-ranging applications of softwood species in the timber industry. Softwoods, such as pine, spruce, and fir, are commonly used for a variety of products, including construction lumber, paper, and other wood-based materials. These species tend to grow faster than hardwoods, leading to a higher volume of timber available for harvesting in many forested regions. In contrast, the other statements are not universally true. Growing stock can consist of both hardwood and softwood species; it is not limited to hardwood. The requirement for a minimum diameter at breast height (DBH) is not a strict rule across all definitions of growing stock, as acceptable sizes can vary depending on the forest type and management objectives. Additionally, growing stock is not limited to use solely for lumber; it can also be utilized for various products, including composite materials and biomass, further emphasizing the versatility and importance of softwoods in the timber market.