Difference between revisions of "Variable:Dominant Species"
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Dominant species is used to determine | Dominant species is used to determine | ||
*what species to include when computing [[Variable:Dominant Height | dominant height]], which is used as input to thinning guide. | *what species to include when computing [[Variable:Dominant Height | dominant height]], which is used as input to thinning guide. | ||
| − | *what species to compute [[Variable:SiteIndexH|SiteIndexH]] for. | + | *what species to compute [[Variable:SiteIndexH (SIH)|SiteIndexH]] for. |
==Definition== | ==Definition== | ||
Revision as of 11:46, 1 September 2011
| Name: | Dominant Species |
|---|---|
| Description: | Domainant Species. |
| 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.