andreassen_2003: Individual tree growth models of Norway spruce, Scots Pine,...

In Silviculturalist/forester: Forest Science and Forestry

Individual tree growth models of Norway spruce, Scots Pine, Birch and other broadleaves in Norway.

Description

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Models based on 5.64 m radius plots (100 m^2). Mean inventory period of 5.4 years.

Usage

Andreassen_2003_BA_increment_Norway_Norway_Spruce_SI(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  BA_m2_ha_Spruce,
  BA_m2_ha_Broadleaves,
  HL,
  QMD,
  stems_ha,
  SI40_Spruce = NULL,
  SI40_Pine = NULL,
  even_aged = TRUE
)

Andreassen_2003_BA_increment_Norway_Scots_Pine_SI(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  BA_m2_ha_Spruce,
  BA_m2_ha_Broadleaves,
  HL,
  QMD,
  stems_ha,
  SI40_Spruce = NULL,
  SI40_Pine = NULL,
  even_aged = TRUE
)

Andreassen_2003_BA_increment_Norway_Birch_SI(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  BA_m2_ha_Spruce,
  BA_m2_ha_Broadleaves,
  QMD,
  SI40_Spruce = NULL,
  SI40_Pine = NULL,
  even_aged = TRUE
)

Andreassen_2003_BA_increment_Norway_Broadleaves_SI(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  BA_m2_ha_Broadleaves,
  QMD,
  SI40_Spruce = NULL,
  SI40_Pine = NULL,
  even_aged = TRUE
)

Andreassen_2003_BA_increment_Norway_Norway_Spruce_topographic(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  BA_m2_ha_Spruce,
  BA_m2_ha_Broadleaves,
  QMD,
  latitude,
  altitude,
  even_aged = TRUE
)

Andreassen_2003_BA_increment_Norway_Scots_Pine_topographic(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  BA_m2_ha_Broadleaves,
  QMD,
  latitude,
  altitude,
  even_aged = TRUE
)

Andreassen_2003_BA_increment_Norway_Birch_topographic(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  QMD,
  latitude,
  altitude,
  even_aged = TRUE
)

Andreassen_2003_BA_increment_Norway_Broadleaves_topographic(
  BA_m2,
  diameter_cm,
  BA_m2_ha,
  BA_m2_ha_Spruce,
  QMD,
  latitude,
  altitude,
  even_aged = TRUE
)

Arguments

BA_m2	Basal area of the tree, in m^2.
diameter_cm	Diameter at breast height 1.3 m in cm.
BA_m2_ha	Basal area of the plot, in m^2 / ha
BA_m2_ha_Spruce	Basal area Spruce, in m^2 / ha
BA_m2_ha_Broadleaves	Basal area Broadleaves, in m^2 / ha
HL	Lorey's Mean Height for the plot.
QMD	Basal area weighted mean diameter, in cm. (To do: Check with authors)
stems_ha	Number of stems per hectare.
SI40_Spruce	Site Index H40 for Spruce. (will override SI40_Pine if not NULL (default))
SI40_Pine	Site Index H40 for Scots Pine.
even_aged	TRUE if even-aged stand (one-layered). FALSE if uneven-aged stand (multi-layered)
latitude	Latitude, decimal.
altitude	Meters above sea level.

Source

Andreassen, K., Tomter, S.M. (2003) Basal area growth models for individual trees of Norway Spruce, Scots pine, birch and other broadleaves in Norway. For. Ecol. Manage. 180:1-3. 11-24. ISSN 0378-1127. DOI: https://doi.org/10.1016/S0378-1127(02)00560-1

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