Allometries: Basal area increment of harvested trees

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Dataset Abstract

Data on basal are increment of five year periods as counted from the rings of basal discs, of harvested trees by Martin Baruffol and Matteo Brezzi in autumn 2010. A total of 160 individuals were harvested and measured belonging to eight species. For some individuals it was not possible to see the rings, these individuals were left out and are thus not included in this table.

Dataset Design

Trees were cut and the volume of their woody parts measured up to 3 cm diameter, rest of it was fresh weightes. Samples of wood, branches and leaves were taken to calculate dry weight and estimate tree biomass. In this dataset, we focus on the tree growth out of tree ring analysis. We measured the area of growth during periods of five years for each individual when possible and counting backwards since 2010.

Spatial Extent

In a forest nearby to Xingangshan we harvested 160 trees out of eight species.

Published

The data has not yet been published

Temporal Extent

Trees were harvested in autumn 2010 and ring analysis was done autumn 2012

Taxonomic Extent

Eigth common species of the forest (coniferous: Cunninghamia lanceolata, Pinus massoniana. Evergreen: Castanopsis fargessi, C.sclerophylla, Schima superba. Deciduos Alniphylum fortunei, Liquidambar formosana, Sassafras tzumu)

Data Analysis

Basal area increment of series of five years is analyzed as a function of initial size, species identity, neighborhood competition and diversity, and geoform.

Data columns available in the raw data part of this dataset

tree_code
single code per tree; Datagroup description: http://159.226.89.107/datagroups/87; Datagroup description: allometry plant species name
Data group: Tree identifier for harvested trees
Keywords: tree, object
Values
101
108
107
110
11
Age
Total count of rings of the basal disc
Unit: nominalYear
Data group: Age, demographic state of an organism
Keywords: tree age, tree rings, age
Values
12
11
13
14
10
Age_unc
Estimated uncertainty of the Age
Unit: nominalYear
Data group: Age, demographic state of an organism
Keywords: age, tree age, tree rings, uncertainity estimate
Values
5
3
4
2
1
D1T
Basal disc diameter Nr 1 with bark. Diameters were taken one with the direction of the widest side of the disc and the second one in the widest orthogonal distance to the first one
Unit: cm
Data group: Basal area
Keywords: basal diameter, size, disc
Values
*
10.46
10.53
10.6
10.14
D2T
Basal disc diameter diameter Nr 2 with bark; Instrumentation: imageJ (software); Source: Schneider, C.A., Rasband, W.S., Eliceiri, K.W. "NIH Image to ImageJ: 25 years of image analysis". NatureMethods 9, 671-675, 2012.; Instrumentation: measured with a calliper (derived from datagroup)
Unit: cm
Data group: Basal area
Keywords: basal diameter, size, disc
Values
10.4
10.46
10.02
*
10.41
meanD
Mean of D1T and D2T;
Unit: cm
Data group: Basal area
Keywords: basal diameter, size, disc
Values
*
11.02
11.07
10.875
10.465
D1
Diameter 1 of the basal disc for the given year of growth. Diameters were taken one with the direction of the widest side of the disc and the second one in the widest orthogonal distance to the first one
Unit: cm
Data group: Basal area
Keywords: basal diameter, size, disc
Values
10.05
10.34
10.08
10.4
*
D2
Diameter 2 of the basal disc for the given year of growth
Unit: cm
Data group: Basal area
Keywords: basal diameter, size, disc
Values
10.34
10.23
10.33
*
10.11
TBA
Total basal Area
Unit: squareCm
Data group: Basal area
Keywords: size, basal area
Values
103.345
101.026
10.183
*
100.109
EBA
Basal area increment of the five last years to the given year of growth
Unit: squareCm
Data group: Basal area
Keywords: growth, basal area
Values
100.44
10.031
100.19
*
0.899
YearG
Year up to the measurements were taken, either 2010 or 2005 for the individuals which were older than ten years
Unit: nominalYear
Data group: Date time information
Keywords: date
Values
2005
2010
CD1
Diameter 1 from the basal area before 2005 for YearG 2010 or before 2000 for YearG 2005. Diameters were taken one with the direction of the widest side of the disc and the second one in the widest orthogonal distance to the first one
Unit: cm
Data group: Basal area
Keywords: basal diameter, size, disc
Values
0.32
0.28
0.11
*
0.24
CD2
Diameter 2 from the basal area before 2005 for YearG 2010 or before 2000 for YearG 2005
Unit: cm
Data group: Basal area
Keywords: basal diameter, size, disc
Values
0.18
0.24
0.21
*
0.11
CBA
TBA-EBA, Basal area of the tree not included in the emasurement of the five year increment
Unit: squareCm
Data group: Helper
Values
*
0.051
0.01
0.034
0.03
Richness
Richness of the five neighbours. If more than one individual was unknown the richness was not calculated; Datagroup description: Richness
Unit: Species number
Data group: Neighbourhood diverstiy
Keywords: species richness, neighbourhood, neighbourhood richness, competitive neighbourhood
Values
2
4
5
1
3
N_unk_n
Number of unkown neighbours; Datagroup description: Richness
Unit: Species number
Data group: Neighbourhood diverstiy
Keywords: species richness, uncertainity estimate
Values
0
2
4
3
1
CI1
Competition index Hegyi 1974. Sum (dbh neighbour/(dbh target * (distance target_neighbour + 1))); Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup); Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup)
Unit: rate
Data group: Competition index
Keywords: competition, competitive neighbourhood
Values
0.615166371952397
0.593080389412879
0.650940298796605
0.654941483329811
0.548299348633398
CI2
Competition index modified after Castagneri 2008. Sum((dbh neighbour/dbh target)**2/ (distance target_neighbour + 1))); Source: Competition index modified after Castagneri 2008. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507; Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup); Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup)
Unit: rate
Data group: Competition index
Keywords: competition, competitive neighbourhood
Values
0.319203905545132
0.280510077272819
0.305498472367175
0.315039396710459
0.247208180568601
CI3
Competition index Stoll 1994. Sum((dbh neighbour)**2/ (distance target_neighbour + 1))); Source: Competition index Stoll 1994. Stoll et al. 1994. Growth Variation in a Naturally Established Population of Pinus-Sylvestris. Ecology 75, Issue 3, pg 660-670; Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup); Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup)
Unit: rate
Data group: Competition index
Keywords: competition, competitive neighbourhood
Values
1398.30698439648
1052.3243657787
1519.15435406699
101.586930750178
1027.06339285714
CI4
Competition index modified after Stoll 1994. Sum((dbh neighbour)**3/ (distance target_neighbour + 1))); Source: Competition index modified after Stoll 1994. Stoll et al. 1994. Growth Variation in a Naturally Established Population of Pinus-Sylvestris. Ecology 75, Issue 3, pg 660-670; Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup); Source: Competition index Hegyi 1974. von Oheimb, G., A. C. Lang, et al. (2011). "Individual-tree radial growth in a subtropical broad-leaved forest: The role of local neighbourhood competition." Forest Ecology and Management 261(3): 499-507 (derived from datagroup)
Unit: rate
Data group: Competition index
Keywords: competition, competitive neighbourhood
Values
10080.6803350063
11687.6142036098
11384.5224983786
10470.4755166442
11759.3652071699
ba1.shannon
Shannon index based on the area of the trunk out of the dbh of the nieghbours. Not corrected when more than one individual was unknown; Source: vegan R package Version: 2.0-6
Unit: rate
Data group: Taxonomic biodiversity
Keywords: shannon diversity
Values
0.162454773442765
0.206807237034092
0.261270091984969
0.22692821918523
0.305551767450865
ba.shannon
Shanon index based on the area of the trunk out of the dbh of the nieghbours. Calculated with package Vegan; Source: vegan R package Version: 2.0-6
Unit: rate
Data group: Taxonomic biodiversity
Keywords: shannon diversity
Values
0.261270091984969
0.162454773442765
0.22692821918523
0.206807237034092
*
RGR
Relative growth rate log(TBA)-log(TBA-EBA)
Unit: rate
Data group: Relative growth rate
Keywords: growth, response variable
Values
0.123701965181579
*
0.0998051612923341
0.123485705757044
0.0800102830537677