Standard |
rev.10/16/03
FOR 127 - Introduction to Forest Measurements II
Introduces the fundamental principles and practices of timber cruising. Emphasizes fixed plot method of statistical sampling. Topics include: importance of forest measurements, forest measurement methods, and cruising and scaling methods.
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Competency Areas |
Hours |
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Importance of Forest Measurements |
Class |
2 |
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Forest Measurement Methods |
D. Lab |
0 |
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Cruising and Scaling Methods |
P. Lab/O.B.I. |
3 |
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Credit |
3 |
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Prerequisite: MAT 101(diploma), MAT 191 (degree) |
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Corequisite: FOR 121, FOR 122 |
Course Guide |
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Competency |
After completing this section, the student will: |
Hours |
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Class |
D.Lab |
P.Lab/ O.B.I. |
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IMPORTANCE OF FOREST MEASUREMENTS |
6 |
0 |
0 |
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Volume determination |
Compute volumes of standing timber. |
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FOREST MEASUREMENT METHODS |
2 |
0 |
15 |
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Tree volume |
Use an engineer’s scale and protractor. |
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Site index |
Measures the site index of forest land. |
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Growth rate |
Use the Swedish increment borer to accurately age a tree. |
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Calculate growth rate of a stand of trees. |
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CRUISING AND SCALING METHODS |
12 |
0 |
15 |
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Cruising |
Discuss advantages and disadvantages of the commonly used cruising methods. |
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List the reasons for cruising. |
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Discuss steps needed to compute acres from a cruise. |
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Determine and discuss the responsibilities of the cruiser(s) for each cruising method. |
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Break down cruising by products cruised. |
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Discuss commonly used plot forms and sizes and draw a map with a cruising grid. |
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Scaling |
List the three commonly used log rules in the South. |
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Discuss weight and stick scaling. |
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Discuss log scaling procedures. |
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Recognize log defects, both internal and external. |
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Visit a sawmill. |
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Suggested Resources |
Avery, T. E. & Burkhart, H. E. (2002). Forest Measurements (fifth edition). Boston: McGraw-Hill.
Tables for Estimating Board-foot Volume of Timber. United States Department of Agriculture. Forest Service.