MCW: Maximum Crown Width

In ryanmismith/inventoryfunctions: Forestry Inventory Functions

Maximum Crown Width

Description

This function returns the maximum crown width for an open grown tree for the most common species found in the acadian forest.

Metric

Usage

MCW(SPP, DBH)

Arguments

SPP	Tree Species: use the FVS code
DBH	Diameter at breast height in cm.

Details

SPP included: BF, BS, EH, WP, NC, RS, WS, AB, GB, RB, RO, PB, QA, RM, SM, YB. SPP that are not included can be enter as 'OH' for hardwoods and 'OS' for softwoods. If no SPP is entered a standard coefficient will be used but may not reflect the crown conditions accurately - please enter 'OS' or 'OH' if species is not included.

MCW is a dependency needed to calculate LCW.

Value

This function returns an numeric vector length n providing the maximum crown width value for n trees in meters.

References

Russell, M. B., & Weiskittel, A. R. (2011). Maximum and Largest Crown Width Equations for 15 Tree Species in Maine. Northern Journal of Applied Forestry, 28(2), 84–91. https://doi.org/10.1093/njaf/28.2.84

See Also

LCW

Other Crown Functions: CCF.Larger(), CrownCompF(), LCW()

Examples

MCW("BF", 25)

SPP   <- c("BF", "RO", "RS", "YB", "RO", "YB")
DBH   <- c(24, 34, 18, 41, 6, 20)

example <- mapply(MCW, SPP, DBH)

## Not run: 
Tibble %>% mutate(MCW = MCW("SPP Variable", "DBH Variable"))

## End(Not run)

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