How do Current Annual Increment (CAI), Periodic Annual Increment (PAI), and Mean Annual Increment (MAI) influence the application of thinning and intermediate cuttings?

What are the stages of stand development and their size limits?

How do stand density, basal area and stocking percent influence the application of intermediate cuttings?

Be able to apply Gingrich’s Stocking table to a variety of forest stands to determine the need for intermediate cuttings.

What are the objectives of Intermediate cuttings?

How do intermediate cuttings effect the economic yield of forest stands? (list and explain the 6 advantages of thinning.)

Timing of Intermediate Cuttings:                                              Main Purpose:

Pre-commercial (Timber Stand Improvement - TSI)

 Release Cuttings:

Cleaning:

Weeding:

Liberation Cutting:

Improvement Cutting:

Salvage Cutting (if not for regeneration)

Pruning:

Commercial Thinning:

Be able to calculate Live Crown Ratio.

How are pre-commercial treatments, cleanings and weedings performed?

What are the Criteria for selecting a suitable tree to be "release" (crop tree)?

How are liberation cuttings and improvement cuttings performed?

 What are the 4 main types of commercial thinnings?

 What are the advantages and disadvantages of each of the types of commercial thinnings?

                                           ADVANTAGES                                                                     DISADVANTAGES

 LOW

CROWN (Crop Tree Release)

GEOMETRIC

 SELECTION