standgrowth {forestGYM} | R Documentation |
Data for construction of stand growth model.
Description
The forest survey data of two periods typically contain valuable information for analyzing forest growth and changes.
Usage
data("standgrowth")
Format
A data frame with 330 observations on the following 16 variables from the forest survey data of two periods
plot
Id of forest plot.
SI
Site index
t1
Time period 1, the unit is year.
D1
Average DBH in t1, the unit is cm.
H1
Average tree height in t1, the unit is m.
DH1
Top height in t1, the unit is m.
N1
Stand density in t1, the unit is N/ha.
G1
Basal area in t1, the unit is m2/ha.
M1
Volume in t1, the unit is m3/ha.
t2
Time period 2, the unit is year.
D2
Average DBH in t2, the unit is cm.
H2
Average tree height in t2, the unit is m.
DH2
Top height in t2, the unit is m.
N2
Stand density in t2, the unit is N/ha.
G2
Basal area in t2, the unit is m2/ha.
M2
Volume in t2, the unit is m3/ha.
Details
The forest survey data of two periods typically contain valuable information for analyzing forest growth and changes.
Author(s)
Zongzheng Chai, chaizz@126.com
Examples
data(standgrowth)
standgrowth