Spruce_Growth: Growth laws of normal spruce stands, 1904

Spruce_GrowthR Documentation

Growth laws of normal spruce stands, 1904

Description

Translated from Wahlgren (1922): A. Schiffel summarised the German experience tables from **Swappach**, Lorey & Baur** such that the height development on differing site classes are as follows. As can be seen from the table, the height growth of the spruce and other tree species culminates earlier on the richer sites than the poorer.

Note: What is referred to as height here is likely mean height of the stand.

Usage

Spruce_Growth

Format

A data frame with columns:

Age

A value between 10-130 with 10 yr increments

Height

Height of the crop, metres

Height increment

Increment since former yr

Bonitet

Site productivity class

Source

*Wuchsgesetze normaler Fichtenbestände* Mitth. aus d. forstl. Vers.-wesen Österreichs 1904. XXIX h. sid. 1 1 o. f. in Wahlgren (1922) *Skogsskötsel: handledning vid uppdragande, vård och fo̊ryngring av skog*,p. 494, 2nd Ed. Kungl. Hofboktr. Iduns tryckeri-A.-B. Stockholm, Sweden. Swedish.


Silviculturalist/forester documentation built on April 20, 2024, 2:13 p.m.