Agestam_1985_basal_area_annual_increment_under_bark_Spruce: Basal area growth function for Spruce from Agestam 1985

In Silviculturalist/forester: Forest Science and Forestry

Basal area growth function for Spruce from Agestam 1985

Description

Basal area growth function for Spruce from Agestam 1985

Usage

Agestam_1985_basal_area_annual_increment_under_bark_Spruce(
  basal_area_Spruce_m2_ha_after_thinning,
  stem_count_Spruce,
  age_at_breast_height_period_start,
  SI_H100_Spruce,
  basal_area_other_species_m2_ha_after_thinning,
  increment_period_years,
  removal_basal_area_m2_ha_at_start_of_period
)

Arguments

basal_area_Spruce_m2_ha_after_thinning	Basal area of Spruce after thinning, under bark. m2/ha.
stem_count_Spruce	Number of Spruce stems per ha after thinning.
age_at_breast_height_period_start	Age at breast height for Spruce at the period start.
SI_H100_Spruce	Site index H100 for Spruce according to height trajectory defined in Hägglund, 1972, 1973.
basal_area_other_species_m2_ha_after_thinning	Basal area under bark of other species after thinning, under bark. m2/ha.
increment_period_years	Length of increment period, in years.
removal_basal_area_m2_ha_at_start_of_period	Removed basal area at the start of the growth period, under bark, Spruce. m2/ha.

Details

Material:

Number of growth periods: 586

Multiple correlation coefficient: 0.938

Standard deviation about the function (sf) : 0.293

sf/standard deviation about the mean: 35%

Value

Annual basal area growth under bark for Spruce. m2/ha.

Source

Agestam, E. (1985) 'A growth simulator for mixed stands of pine, spruce and birch in Sweden. Diss. Swedish University of Agricultural Sciences. Report no. 15. Dept. of Forest Yield Research. ISSN 0348-7636. ISBN 91-576-2528-x. 150 pp. Garpenberg, Sweden; page. 29.

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