CWT-LTER Data Set Summary

Accession: 4004 CWT Research Theme: Plant Ecology
Contributors: Brian D. Kloeppel, John Chamblee
Title: Aboveground biomass and nitrogen allocation of ten deciduous southern Appalachian tree species at the Coweeta Hydrologic Laboratory in 1997
Abstract: Allometric equations were developed for mature trees of 10 deciduous species at the Coweeta Hydrologic Laboratory in western North Carolina, U.S.A. These equations included the following dependent variables: stem wood mass, stem bark mass, branch mass, total wood mass, foliage mass, total biomass, foliage area, stem surface area, sapwood volume, and total tree volume. High correlation coefficients (R2) were observed for all variables versus stem diameter, with the highest being for total tree biomass, which ranged from 0.981 for Oxdendrum arboreum to 0.999 for Quercus coccinea. Foliage area had the lowest R2 values, ranging from 0.555 for Quercus alba to 0.962 for Betula lenta. When all species were combined, correlation coefficients ranged from 0.822 for foliage area to 0.986 for total wood mass, total tree biomass, and total tree volume. Species with ring versus diffuse/semiring porous wood anatomy exhibited higher leaf area with a given cross-sectional sapwood area as well as lower total sapwood volume. Liriodendron tulipifera contained one of the highest foliar nitrogen concentrations and had consistently low branch, bark, sapwood, and heartwood nitrogen contents. For a tree diameter of 50 cm, Carya spp. exhibited the highest total nitrogen content whereas Liriodendron tulipifera exhibited the lowest.
Key Words: branch mass, Coweeta Hydrologic Laboratory, Coweeta LTER, CWT, DBH, ecophysiology, foliage area, foliage mass, forest ecology, LTER, North Carolina, Otto, sapwood volume, stem bark mass, stem surface area, stem wood mass, total biomass, total tree volume, total wood mass, trees, uneven sampling interval, University of Georgia, University of Minnesota
LTER Core Area: Primary Production
CWT Themes: Plant Ecology
Study Type: Coweeta Terrestrial Study
Study Period: 01-Jun-1997 to 01-Aug-1997
Site References:
CWTBASIN -- Coweeta Basin, Macon County, North Carolina, USA
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Data Table: 4004_Upd (Main data table for set 4004, 87)

Access: Public (released 23-Jun-2003)

Metadata: Text (ESA FLED), Basic EML, Complete EML

Data Formats: Spreadsheet CSV Text Format, EML-described Text Format, Tab-delimited Text Report with Statistical Summary, GCE Data Toolbox Format, Standard MATLAB Variables Format

Column List:

Column Name Units Type Description (hide)
1 Species none alphanumeric string Species codes
2 DBH m floating-point Diameter at breast height (1.37m); DBH
3 Site none alphanumeric string Site
4 Elevation m floating-point Elevation above sea level (m) || aspect in (degrees)
5 Slope none floating-point Slope; aspect in degrees
6 Slope_position none alphanumeric string Position on the slope
7 Canopy_class none alphanumeric string Canopy class
8 Tree_age none integer Tree age taken from basal disks; years
9 Tree_height m floating-point Total tree height taken from ground to tip ; meters (m)
10 Dry_branch_mass_top_third kg floating-point Dry branch mass of the top third of the crown; kilograms (kg)
11 Dry_foliage_mass_top_third kg floating-point Dry foliage mass of the top third of the crown; kilograms (kg)
12 Specific_leaf_area_top_third cm^2/g floating-point Specific leaf area of the top third of the crown; (cm2g-1)
13 Foliage_area_top_third m^2 floating-point Foliage area of the top third of the crown; meters squared (m^2)
14 Dry_branch_mass_mid_third kg floating-point Dry branch mass of the middle third of the crown; kilograms (kg)
15 Dry_foliage_mass_mid_third kg floating-point Dry foliage mass of the middle third of the crown; kilograms (kg)
16 Specific_leaf_area_mid_third cm^2/g floating-point Specific leaf area of the middle third of the crown; (cm2g-1)
17 Foliage_area_middle_third_crown m^2 floating-point Foliage area of the middle third of the crown; meters squared (m^2)
18 Dry_branch_mass_bottom_third kg floating-point Dry branch mass of the bottom third of the crown; kilograms (kg)
19 Dry_foliage_mass_bottom_third kg floating-point Dry foliage mass of the bottom third of the crown; (kg)
20 Specific_leaf_area_bottom_third cm^2/g floating-point Specific leaf area of the bottom third of the crown; (cm^2)(g^-1)
21 Foliage_area_bottom_third m^2 floating-point Foliage area of the bottom third of the crown; meters squared (m^2)
22 Total_branch_mass kg floating-point Total branch mass for the tree (kg)
23 Total_foliage_mass kg floating-point Total foliage mass for the tree (kg)
24 Mean_specific_leaf_area_tree cm^2/g floating-point Mean specific leaf area for the tree (cm^2)(g^-1)
25 Total_foliage_area m^2 floating-point Total foliage area for the tree (m^2)
26 Stem_mass kg floating-point Stem mass [branch and stem wood] (kg)
27 Bark_mass kg floating-point Mass of bark only (kg)
28 Wood_mass kg floating-point Mass of wood only (kg)
29 Stem_surface_area m^2 floating-point Surface area of the stem (m^2)
30 Stem_volume m^3 floating-point Volume of the stem (m^3)
31 Total_volume_of_stem_branches m^3 floating-point Volume of the stem and branches (m^3)
32 Stem_branch_foliage_mass kg floating-point Stem mass, branch mass, and foliage mass/ biomass (kg)
33 Stem_sapwood_branch_volume m^3 floating-point Stem sapwood volume and branch volume (m^3)
34 Cross_sec_sapwood_area cm^2 floating-point Cross sectional sapwood area breast height (1.37m) (cm^2)
35 Calc_wood_spec_gravity none floating-point Calculated wood specific gravity from the study
36 Pub_wood_spec_gravity none floating-point Published wood specific gravity (Clark and Schroeder 1986)
37 Pub_branch_spec_gravity none floating-point Published branch specific gravity (Clark and Schroeder 1986)
38 N_of_foliage_branch_top_third none floating-point [N] of the foliage from branches originating in top one third of crown
39 N_of_foliage_branches_mid none floating-point [N] of the foliage from branches originating in middle one third of crown
40 N_of_foliage_branches_bottom_third none floating-point [N] of the foliage from branches originating in bottom one third of crown
41 N_of_branches_top_third none floating-point [N] of the branches originating in top one third of crown
42 N_of_branches_mid none floating-point [N] of the branches originating in the middle of the crown
43 N_of_branches_bottom_third none floating-point [N] of the branches originating in bottom one third of crown
44 N_of_stem_bark none floating-point [N] of the stem bark
45 N_of_sapwood_1996_1997 none floating-point [N] of sapwood from the last two years of growth (1996-1997)
46 N_of_heartwood_remain none floating-point [N] of the heartwood from the remaining wood wedge
47 Height_BLC m floating-point
48 Length_crown m floating-point