Sustained Yield Regulations MCQs

Option A: The increase in girth, diameter, basal area, height, volume, quality

Option B: Value of individual tree or crops during a given period

Option C: Utilizable portions of total woody growth goes on increasing

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Current annual increment (CAI)

Option B: Mean annual increment (MAI)

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Every year, the volume of a growing tree or of a stand of trees, increases by quantity

Option B: But periodic annual increment after 5/10 years is taken to be CAI

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Checking correctness of past management

Option B: Checking silvicultural or management practices

Option C: It also helps in finding rotation

Option D: Decision about optimum level of residual growing stock. It depends on rotation

Correct Answer: All of the above ✔

Option A: From yield table

Option B: Estimation of movement rations from average diameter growth by diameter class

Option C: Increment determination by control method

Option D: Increment by continuous forest inventory (CFI)

Correct Answer: All of the above ✔

Option A: Future increment of even aged crop can be from valid yield table

Option B: Under stocked stands tend to approach fully stocked stands with increase in age, though more rapid growth than the latter

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Tree diameters include in a dia class in the present stand tables are distributed uniformly, about the class centre

Option B: Movement ration: Proportion of trees which will move onto next higher classes

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Estimation of movement ration from actual diameter growth of individual tree

Option B: 4 trees will remain in 6″ dia class

Option C: 5 trees will move to 7″ dia class

Option D: 6 trees will move to 8″ dia class

Correct Answer: All of the above ✔

Option A: In Swiss, forest are managed intensively under selection system

Option B: Each compartment is enumerated 100% at 5-6 years intervals

Option C: Records are kept by compartments of all mortality and all cut trees in interval between two successive counts

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Used in USA and Canada

Option B: Large area under first, they can’t adopt other method

Option C: Sometime metallic rod is fixed in centre

Option D: Measured after 5 or 10 years

Correct Answer: All of the above ✔

Option A: CFI is most accurate and determines growth under actual conditions

Option B: Unlike two way and stand table method, it does not rely on assumption that trees during next ten years will grow at same rate as they have grown in the past 10 years

Option C: Both (a) & (b)

Option D: All of the above

Correct Answer: Both (a) & (b) ✔

Option A: Use of forest resource at a constant level which it can sustain in perpetuity at a given intensity of management

Option B: Continuous supply of products from forests in existing stage

Option C: To facilitate organization and administration

Option D: All of the above

Correct Answer: All of the above ✔

Option A: It stresses the removal of only part of mature trees which is against economic and silvicultural grounds

Option B: If a forest is in a poor condition, sustained yield management will provide low regular yield

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: That forest which has reaches and maintains a practically attainable degree of perfection in all its parts for the full and continued satisfaction of objects of management

Option B: The provide sustained yield the growing stock must first be moulded to approach a model

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: It is an ideal against which an actual forest may be compared

Option B: Normal increment “the increment laid on by a normal forest”

Option C: Normal age class distribution “A complete series of age classes in such proportions as will permit equally yields by volume from annual or periodic felling under given rotation and silvicultural system

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Cannot be easily visualized as that of even-aged forests

Option B: To provide sustained yield annually, an unevenaged forest must have more trees in each of lower size classes

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: In selection forest, the stem numbers fell off from lower to higher dia classes in a geometric progression

Option B: So there was a constant ratio between numbers in successive dia classes from lowest to the highest

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Site: An area considered in terms of its environment, particularly as this determines the type and quality of vegetation the area can carry”

Option B: Exploitable sizes are attained much sooner on higher than on lower site qualities, enabling shorter rotations

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Volume per acre at rotation age

Option B: Physiology and soil

Option C: Ground vegetation

Option D: Height of dominant and co-dominant trees

Correct Answer: All of the above ✔

Option A: Species composition

Option B: Stocking and density

Option C: Optimum stocking level

Option D: Age and size

Correct Answer: All of the above ✔

Option A: Stocking: Is a qualitative term, which designates the relative occupation of the site by trees

Option B: Stand density: A quantitative measure of tree stocking, expressed either relatively as a co-efficient, taking normal numbers, basal area

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: A loose term generally to the determination of yield and prescribed means of achieving it

Option B: Yield includes final yield and intermediate yield

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: To protect measure trees from wastage

Option B: Molding growing stock into efficient machine

Option C: Optimum and regular yield

Option D: To meet the demand of the people

Correct Answer: All of the above ✔

Option A: Area method

Option B: Periodic yield and regeneration block (Cotta Formula)

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Hunder Shagen

Option B: Van Mantle

Option C: Blan Ford formulae

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Actual annual yield (Ya) in a forest should bear the same relationship to volume of actual growing stock (Va)

Option B: The normal annual yield (Yn) does to volume of normal growing stock (Vn)

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Based on idea of relationship between volume

Option B: Increment Mental in 1852 formulated it

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Number of trees in each size class

Option B: Passage of time from one dia class to another dia class

Option C: Casualty percentage

Option D: All of the above

Correct Answer: All of the above ✔

Option A: It is not a method of yield regulation but a method of repeated inventories in un-even-aged forests

Option B: Continuous record of history of growing stock, its volume

Option C: Size class distribution, causalities and increment

Option D: All of the above

Correct Answer: All of the above ✔