Hagglund_age_to_height: Age at a certain height according to height trajectories by...

In Silviculturalist/forester: Forest Science and Forestry

Age at a certain height according to height trajectories by Hägglund (1972,1973,1974)

Description

Wrapper to find age at breast height, total age and age to breast height at a set SI and/or height for Hagglunds functions.

Usage

Hagglund_age_to_height(
  latitude,
  SI,
  dominant_height_m = 12.5,
  species,
  locality,
  regeneration = "culture"
)

Arguments

latitude	Degrees N. Only required for "Picea abies" if locality is "northern".
SI	Site Index H100
dominant_height_m	Given height if interested in height above breast height. Defaults to 12.5 m.
species	"Picea abies" or "Pinus sylvestris".
locality	For "Picea abies": "northern" or "southern" Sweden.
regeneration	How was the stand established? One of "culture", "natural regeneration" or "unknown".

Value

List of 3 elements:

"Age at breast height given dominant height", numeric.

"Time to breast height 1.3 m", numeric.

"Total age", numeric.

See Also

Hagglund_1972_northern_Sweden_Height_trajectories_Spruce() ,

Hagglund_1973_southern_Sweden_Height_trajectories_Spruce(),

Hagglund_1974_Sweden_height_trajectories_Pine()

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