KozakTreeVol: Kozak Volume Equation

In ryanmismith/inventoryfunctions: Forestry Inventory Functions

Kozak Volume Equation

Description

This function allows you to calculate the volume at any point on tree for common tree species found in the northeastern and acadian forests. All measurements must be entered as metric. Calculates volume by breaking tree into 100 sections using the kozak taper function and calculating volume of each section using the Smalians volume formula.

Usage

KozakTreeVol(
  Bark,
  SPP,
  DBH,
  HT,
  Planted = FALSE,
  stump = NA,
  topHT = NA,
  topD = NA
)

Arguments

Bark	specify if you want measurement inside or outside bark: 'ob' = outside, 'ib' = inside.
SPP	Species: use FVS species codes: example 'RO' - Red Oak, 'WS' = White Spruce
DBH	Diameter Breast Height in cm
HT	Tree Height in meters
Planted	specify if the tree is planted, specify as TRUE or FALSE, defaults to FALSE
stump	the height of the stumpin meters you want excluded from the volume measurement, defaults to NA.
topHT	Top height of crown in meters, defaults to NA
topD	The diameter in cm at which you want the volume measurement to stop, defaults to NA.

References

Kozak, A. (2004). My last words on taper equations. The Forestry Chronicle, 80(4), 507–515. https://doi.org/10.5558/tfc80507-4

Li, R., Weiskittel, A., Dick, A. R., Kershaw, J. A., & Seymour, R. S. (2012). Regional Stem Taper Equations for Eleven Conifer Species in the Acadian Region of North America: Development and Assessment. Northern Journal of Applied Forestry, 29(1), 5–14. https://doi.org/10.5849/njaf.10-037

MacFarlane, D. W., & Weiskittel, A. R. (2016). A new method for capturing stem taper variation for trees of diverse morphological types. Canadian Journal of Forest Research, 46(6), 804–815. https://doi.org/10.1139/cjfr-2016-0018

Weiskittel, A., & Li, R. (n.d.). DEVELOPMENT OF REGIONAL TAPER AND VOLUME EQUATIONS: HARDWOOD SPECIES. 8.

See Also

KozakTaper

EXP.F

Other Volume Functions: DOBtoDIB()

Examples

KozakTreeVol(Bark = 'ib', SPP = 'RO', DBH = 40, HT = 18, Planted = FALSE, stump = .5, topHT = NA, topD = 25.3)
KozakTreeVol('ob', 'WP', 32.5, 21)

ryanmismith/inventoryfunctions documentation built on Aug. 5, 2022, 2:22 a.m.