Recreation Value Model: Difference between revisions
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==Stand-level index== | ==Stand-level index== | ||
For each stand, a recreation index (RI) can be calculated as a function of the following variables: | For each stand, a recreation index (RI) between 0 and 1 can be calculated as a function of the following variables: | ||
===For bare land and plantations (<2m height)=== | ===For bare land and plantations (<2m height)=== | ||
| Line 7: | Line 7: | ||
*Downed logs (RI ''decreases'' with increased abundance of downed logs. Percepted as hindering) | *Downed logs (RI ''decreases'' with increased abundance of downed logs. Percepted as hindering) | ||
*Harvest residues (RI ''decreases'' with increased abundance of harvest redidues) | *Harvest residues (RI ''decreases'' with increased abundance of harvest redidues) | ||
The intercept is 0.3 | |||
===For young stands > 2m, and before first thinning=== | ===For young stands > 2m, and before first thinning=== | ||
As above, plus: | As above, plus: | ||
*Pine and spruce proportion (RI ''decreases'' with increased occourence of conifer plants, broadleaves are preferred) | *Pine and spruce proportion (RI ''decreases'' with increased occourence of conifer plants, broadleaves are preferred) | ||
The intercept is 0.568. | |||
===For older stands === | ===For older stands === | ||
| Line 16: | Line 18: | ||
*No. of stems (Many large trees are preferred before small trees) | *No. of stems (Many large trees are preferred before small trees) | ||
*Soil damage (Occurence of soil damages from harvest machines etc. has a negative impact on RI. | *Soil damage (Occurence of soil damages from harvest machines etc. has a negative impact on RI. | ||
The intercept is 0.569 | |||
==Landscape level== | ==Landscape level== | ||
Revision as of 16:26, 3 November 2008
Stand-level index
For each stand, a recreation index (RI) between 0 and 1 can be calculated as a function of the following variables:
For bare land and plantations (<2m height)
- Age structure (RI increases with increased tree size diversity)
- Dead wood occurence (RI decreases with increased abundance of dead wood).
- Downed logs (RI decreases with increased abundance of downed logs. Percepted as hindering)
- Harvest residues (RI decreases with increased abundance of harvest redidues)
The intercept is 0.3
For young stands > 2m, and before first thinning
As above, plus:
- Pine and spruce proportion (RI decreases with increased occourence of conifer plants, broadleaves are preferred)
The intercept is 0.568.
For older stands
As above, plus:
- No. of stems (Many large trees are preferred before small trees)
- Soil damage (Occurence of soil damages from harvest machines etc. has a negative impact on RI.
The intercept is 0.569
Landscape level
References
Lindhagen...