Difference between revisions of "Variable:Dominant Species"
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{{ForestInputData | {{ForestInputData | ||
| − | |description = | + | |description = Mean height of dominant trees. |
|I_O = Output variable (prognosis) | |I_O = Output variable (prognosis) | ||
|type = real | |type = real | ||
Revision as of 12:05, 1 September 2011
| Name: | Dominant Species |
|---|---|
| Description: | Mean height of dominant trees. |
| 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.