basal: The basal area of plots

In dendrometry: Forest Estimations and Dendrometric Computations

The basal area of plots

Description

Computes the basal area of tree stems in a plot. The basal area is the cross sectional area of the bole or stem of a tree at breast height.

Usage

basal(dbh, area, k = 100, circum = NULL)

Arguments

dbh	numeric, vector of diameter.
area	numeric, area of the plot (see details for unit).
k	numeric, used to convert diameter unit. Default is 100 (coverts from cm to m. See details).
circum	numeric, vector of circumference. Is used only if dbh is not given.

Details

If area is expressed in ha and dbh expressed in cm, the basal area unit is cm\u00b2/ha when k = 1. In order to convert centimeter (cm) to meter (m) for dbh, set k = 100. Because 1m = 100 cm. Then, basal area unit will be m\u00b2/ha.

If dbh is in meter (m), and area in in hectare (ha), setting k = 1 returns basal area in m\u00b2/ha.

If dbh is in feet, and area in acre, setting k = 1 returns basal area in ft\u00b2/ac.

If dbh is in inch, and area in acre, setting k = 12 returns basal area in feet\u00b2/acres (ft\u00b2/ac).

Value

A vector of basal area of stands.

dendrometry documentation built on Nov. 5, 2025, 5:23 p.m.