Lesson 4 spacer BEC Method
Lessons
Lesson 1
Lesson 2
Lesson 3
Lesson 4
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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
Appendices
Appendix 1
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Appendix 6
Appendix 7
Appendix 8
Appendix 9
Course Homepage
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Lesson Objectives

Learn how to use the BEC method to estimate site index.

BEC Method

With the BEC method, the SI for a stratum is predicted from its subzone and site series. The BEC method is best suited to stands that have less than three-years growth above breast height and older stands not suitable for the growth intercept and site index curve methods (Figure 4.1). The BEC method produces SI estimates of moderate accuracy. When correctly used, the growth intercept and site index curve methods produce more accurate SI estimates.

If a standards unit or strata contains more than one site series, estimate the percent of area by site series and compute an average SI weighted by site series percent.

Previously, the BEC method was available for use in the regional eco-guides of the Vancouver, Nelson and Prince Rupert forest regions. Each region had its own format for presenting the information. A standard format covering the entire province was released in the fall of 1997.

Stands suited to BEC include A) recently harvested, and B) old-growth stands

Figure 4.1. Stands suited to BEC include A) recently harvested, and B) old-growth stands.

 

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