Pukkala_2009_diameter_ingrowth_Finland_Spruce: Diameter of Ingrowth in Uneven-sized stands in Finland

In Silviculturalist/forester: Forest Science and Forestry

Diameter of Ingrowth in Uneven-sized stands in Finland

Description

Diameter of Ingrowth in Uneven-sized stands in Finland

Usage

Pukkala_2009_diameter_ingrowth_Finland_Spruce(
  BA,
  stems_ha_spruce,
  stems_ha_other,
  vegetation
)

Pukkala_2009_diameter_ingrowth_Finland_Betula_Pine(
  BA,
  stems_ha_spruce,
  stems_ha_other,
  vegetation
)

Arguments

BA	Total Basal Area (m2/ha) of trees >5 cm dbh.
stems_ha_spruce	Spruce stems per hectare >5 cm dbh.
stems_ha_other	Stems other than Spruce per hectare > 5 cm dbh.
vegetation	One of [forester::Finland_vegetation_types()]

Details

Spruce model is based on 170 plot observations, R^2= 0.586, SD of resid. = 0.0473.

@details Pine & Betula model is based on 141 plot observations, R^2= 0.469, SD of resid. = 0.0730.

Value

Diameter cm dbh.

Source

Pukkala, T., Lähde, E., Laiho, O. (2009). Growth and Yield Models of uneven-sized forest stands in Finland. For. Ecol. Manage. 258: 207-216. Available (25/12/2021) https://doi.org/10.1016/j.foreco.2009.03.052

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