Difference between revisions of "Variable:Dominant Species"
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{{ForestInputData | {{ForestInputData | ||
− | |description = | + | |description = Regeneration species or species with largest basal area or stems. |
|I_O = Output variable (prognosis) | |I_O = Output variable (prognosis) | ||
|type = real | |type = real |
Revision as of 13:08, 1 September 2011
Name: | Dominant Species |
---|---|
Description: | Regeneration species or species with largest basal area or stems. |
I/O: | Output variable (prognosis) |
Membership: | Treatment unit and Reference unit |
Type: | real |
Unit/values: | Species group code |
Database table: | dbo.Result_ForestData (result database) |
Usage
Dominant species is used to determine...
- ...what species to include when computing dominant height, which is used as input to thinning guide.
- ...what species to compute SiteIndexH for.
Definition
New stands
Dominant Species: Regeneration species, i.e. the species that was planted.
Existing stands
Young stands: Species proportion is computed as proportion of trees. Established stands: Species proportion is computed as proprtion of basal area.
Domainant species: If number of conifers >= 500 trees/ha, or sum of conifer proportions >= 50 %, then pine, spruce or contorta is selected as dominant species depending of which is most abundant. Otherwise, if one of oak, beech, or birch >= 50 %, then that one is selected. Otherwise, "other decidouos" is selected, which includes other broad-leafs.