HORTICULTURE

HORTICULTURE SCIENCE

DISEASE AND PEST MANAGEMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is NOT a benefit of selective harvest?
A
Provides timber revenue
B
Supports wildlife habitat
C
Creates even-ages stands
D
Provides some open habitat for elk and deer
Explanation: 

Detailed explanation-1: -Even-aged stands are ones where the range of tree ages within a stand do not vary by more than 20% or so. Plantation forests are the best example of even-aged stands, as often they are created using seedlings or clones from a common set of parents.

Detailed explanation-2: -Even-aged stands can provide horizontal diversity (i.e. a variety of forest types and age classes across the landscape). Uneven-aged stands can provide some horizontal structure, especially when group selection is used. Site factors such as soil type can influence stand structure.

Detailed explanation-3: -Forests are often managed in an even-aged or an uneven-aged system. An even-aged system is one where the dominant trees in the forest are all about the same age. An uneven-aged system is one where there is a greater diversity of tree age classes in the forest.

Detailed explanation-4: -An uneven-aged stand is a mosaic of tiny even-aged clumps and scattered individuals woven together through a perpetual cycle of random disturbances. In nature these disturbances contribute to scattered mortality, allowing for temporal waves of different age-classes dispersed throughout the stand.

There is 1 question to complete.