Lesson 4 spacer BEC Method
Lesson 1
Lesson 2
Lesson 3
Lesson 4

Lesson Objectives

BEC Method

Old Vancouver Forest Region Format

Old Prince Rupert Forest Region Format

Old Nelson Forest Region Format

New Provincial Format for the BEC Method

SIBEC Guide Tables

Relationships Between SI and Soil Moisture, Soil Nutrients, and Biogeoclimatic Subzone

SIBEC Guide Accuracy and Limitations

Accuracy for Site Index of Single Stand

Accuracy for Mean Site Index of Population of Stands

The SIBEC Program

Local SIBEC Tables

Lesson 5
Lesson 6
Lesson 7
Lesson 8
Lesson 9
Lesson 10
Lesson 11
Lesson 12
Appendix 1
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Appendix 6
Appendix 7
Appendix 8
Appendix 9
Course Homepage

Old Prince Rupert Forest Region Format

For each site series, the tree species that commonly occur on the site series were placed on a site index scale (Figure 4.3). The scale ran from site index 0 to 40 m. To obtain SI for a species on a site series, the user read the position of the species code on the site index scale. Site index was not provided for species and site series where there was inadequate data. Section 7.2.2 of the Prince Rupert Forest Region eco-guide and footnotes on each table provide more information on these SI estimates.


Given the following information, use the old Prince Rupert Forest Region format for the BEC method to determine SI:

CWHwm/01 Hw
CWHwm/60% 01 and 40% 02 Hw
CWHwm/01 Ba

CWHwm Interpretations Table

Figure 4.3. Old Prince Rupert Forest Region format for BEC method—CWHwm (click on above image to see a full screen version of the form).


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