Variable:SiteIndexH (SIH)
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| Name: | SiteIndexH (SIH) |
|---|---|
| Description: | SiteIndexH (SIH) |
| I/O: | Output variable (prognosis) |
| Membership: | Treatment unit |
| Type: | real |
| Unit/values: | (m) |
| Database table: | dbo.Result_ForestData |
Variable SiteIndexH (SIH) is an computed value for H100, i.e. dominant height at a stand age of 100 years. It is computed by the system, derived from site index equations. The site index equations gives the height h at age a, given initial height h0 at age a0. For young stands, SiteIndexH it is often higher that SIS (site index determined from site factors) (cf. [1]). SiteIndexH is computed as the arithmetic mean height of dominant trees when the stand mean age is 100 years (50 years for birch), computed for each tree separately though. For trees younger than 100 years, SiteIndexH For dominant trees older than 100 years, SiteIndexH will be smaller than current dominant height.
References
- ↑ Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern Sweden, Scandinavien Journal of Forest Research 11:38-49.