Forest DBH - Raw Data

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

The raw DBH (tree diameter at breast height) values from the forested sites, diameters are measured at 4 points along the trunk.

This datatable is part of the Forest Increment Survey dataset. In 1998, a new protocol was instituted for measuring the diameters of every tree greater than 5 cm dbh in the coniferous and deciduous forest plots. Trees are usually measured in January. Exponential equations are used to estimate tree mass for each year. The goal is to estimate wood production for any given time period (usually one year) as the difference between two estimates of mass.

Note

Experiment: Main Cropping System Experiment (MCSE)
Data available from: December 1998 to February 2019
Dataset: KBS045
Datatable ID: KBS019-017.59
Core Areas Primary Production,Populations,Disturbance
Repository link: http://doi.org/10.6073/pasta/90de825a170e0a6cbddd35ca330bbfc6
Related Tables:
Personnel:
Last Updated 2020-07-10
Variate Description Units
sample date day the tree was measured
year sample year (this is the year to which the sample is assigned, even if the actual sample date is in the following year)
treatment treatment sampled
replicate replicate sampled
tree id id of the tree sampled
species species sampled
color location of the dbh measurement
dbh diameter measured centimeter
estimated Set to true if the dbh has been estimated from the previous and following years.

Data Excerpt

sample_date year treatment replicate tree_id species color dbh estimated
2019-02-06 2018 CF 3 363 Pinus strobus L. (*) blue false
2019-02-06 2018 CF 3 363 Pinus strobus L. (*) orange false
2019-02-06 2018 CF 3 363 Pinus strobus L. (*) red false
2019-02-06 2018 CF 3 363 Pinus strobus L. (*) white false
2019-02-06 2018 CF 3 364 Pinus strobus L. (*) blue 31.4 false
Sign In