Using the Gingrich (1967) Stocking Chart for Upland Hardwood forests in the Central States

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# Using the Gingrich (1967) Stocking Chart for Upland Hardwood forests in the Central States - PowerPoint PPT Presentation

Using the Gingrich (1967) Stocking Chart for Upland Hardwood forests in the Central States. Gingrich, S. F. 1967. Measuring and evaluating stocking and stand density in Upland Hardwood forests in the Central States. Forest Science. 13:38-53. .

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Using the Gingrich (1967) Stocking Chart for Upland Hardwood forests in the Central States

Gingrich, S. F. 1967. Measuring and evaluating stocking and stand density in Upland Hardwood forests in the Central States. Forest Science. 13:38-53.

Class Exercise:

Determine the percent stocking for a stand with a density of 150 trees ac-1 and basal area of 115 ft2 ac-1

Determine the percent stocking for a stand with a a density of 150 trees ac-1 and basal area of 115 ft2 ac-1

95

What is the maximum amount of basal area that can be removed without resulting in an understocked stand?

To determine this, we must know:

Stand’s current basal area

Basal area at B-Line stocking for the given stand’s average tree diameter

What is the maximum amount of basal area that can be removed without resulting in an understocked stand?

To determine this, we must know:

Stand’s current basal area

Basal area at B-Line stocking for the given stand’s average tree diameter

We already know the stand’s current basal area is 90 ft2 ac-1

What is the maximum amount of basal area that can be removed without resulting in an understocked stand?

To determine this, we must know:

Stand’s current basal area

Basal area at B-Line stocking for the given stand’s average tree diameter

We already know the stand’s current basal area is 90 ft2 ac-1

We determine the basal area at B-Line stocking for the given stand’s average tree diameter by using the stocking chart.

What is the maximum amount of basal area that can be removed without resulting in an understocked stand?

What is the maximum amount of basal area that can be removed without resulting in an understocked stand?

What is the maximum amount of basal area that can be removed without resulting in an understocked stand?

Basal area at B-Line stocking is ~ 65 ft2 ac-1

What is the maximum amount of basal area that can be removed without resulting in an understocked stand?

This is equal to:

current stand basal area - basal area at B-Line stocking

So, maximum amount of basal area that can be removed without resulting in an understocked stand is

= 90 ft2 ac-1 – 65 ft2 ac-1

= 25 ft2 ac-1