The suggested reserve sizes for significant
karst features and values in this section are default recommendations.
However, local site conditions should be carefully considered when
planning reserve shapes and sizes.
The planning and design of all karst reserves should be based
on a thorough
If the default karst reserve recommendations cannot be maintained
due to severe windthrow potential, professional
judgment should be used to develop site-specific management practices
that achieve as many of the management objectives for the reserve
Figure 3-1: Extending reserves and
management zones on steep slopes.
In addition, the default recommendations for reserve
size are based on relatively flat terrain. Where features occur
on slopes, there may be a need to alter the shape and size of the
reserve and/or management zone. On steep slopes, this could involve
the reserve and/or management zone on the upslope side of features
to account for the increased risk of slumping and soil erosion.
Reserves and management zone widths on slopes
should be measured using slope distance.
For more information on assessing windthrow risk, see the Windthrow
Handbook for British Columbia Forests (Research Program Working
Paper 9401) at: https://www.for.gov.bc.ca/HFP/FORDEV/windthrow/
Assessment Field Cards (FS712 – 1, 2,3,4 HFP98/05)
are available at: https://www.for.gov.bc.ca/pscripts/isb/forms/forms.asp
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