What is the relationship between tree age and yield?

What is the relationship between tree age and yield?

• A. Yield decreases with age.
• B. As trees age, yield typically increases until it reaches a maximum point.
• C. Yield is independent of age.
• D. Yield fluctuates randomly with age.

Answer: (B)

As trees grow, they accumulate more wood in both diameter and height, so the total volume (yield) per hectare tends to rise with age. Early on the increase is slow, then it speeds up as trees put on size and the stand approaches its productive capacity. At some age, the mean annual increment reaches its maximum, meaning each additional year adds wood at the greatest rate. After that point, further aging slows growth and the annual yield gains taper off, often due to competition, aging tissues, and diminishing site resources. The general pattern is yield increasing with age until a peak is reached, with the exact age depending on species and site quality.

As trees grow, they accumulate more wood in both diameter and height, so the total volume (yield) per hectare tends to rise with age. Early on the increase is slow, then it speeds up as trees put on size and the stand approaches its productive capacity. At some age, the mean annual increment reaches its maximum, meaning each additional year adds wood at the greatest rate. After that point, further aging slows growth and the annual yield gains taper off, often due to competition, aging tissues, and diminishing site resources. The general pattern is yield increasing with age until a peak is reached, with the exact age depending on species and site quality.