1) stand density --  (basal area per acre)

2) stand volume --  (cubic feet per acre )

3) site quality --  (site index)

4) growth yield  --  (growth percent)

procedural steps in a forest inventory?

1)      Delineate Stands on Aerial Photos

2)  Layout the “sample points” on the stand

3)  Locate a reference point (point of beginning)

4)  Create your “traverse notes”

5) Visit the Field   

Diameter at base height

What is basal area? 

The cross section area of the stem of a plant or of all plants in a stand, generally expressed as square units per unit area.

basal area per acre?

Cumulative total of all the BA’sFor each counted tree in an acre.

Using a 20 prism/gauge, each sampled tree will 

represent 20 sq. ft./acre 

How do you determine if a borderline tree is in or out.  

For baf of 20

DBH * 1.945

 if Borderline is less or equal to the measured distance the tree is in.

How are tree heights measured

with a Suunto clinometer ?

A basil area ratio

What is Site Index? How is it determined?

A site's quality estimation using the the total hight and total age. Then productivity is determined using a curve.

% of growth in a year

(ten yaer growth/ 10)

/

(DBH/2)

*100

Ba/ac=

(# trees

/

# of plots or points)

*BAF

Vol/ac=

(Sum of VABAR

/

# of VABAR points)

* BA/ac or Stand Density

( (10 year growth in.)/(10) )

/

( (DBH)/(2) )

* 100