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Title:
Main Experiment: Wood stubs of Site A and B: quantity, density, position and decomposition class
Access rights:
Free within projects
Usage rights:
members of the project
Published:
No information available
Abstract:
The measurements for this piece of data were taken between 2012.08.28 and 2012.11.15. Measured was every piece of wood (most of the times that had been tree stubs) which scope had been bigger than 14 cm in a sub plot in all VIP on both sites. The sub plot was defined as the inner square that is stretched by the planted trees of positions: 06:06, 06:14, 14:06 and 14:14,which is approximately a square with a side length of 10.4 meters. Every piece of wood was categorised into one of 6 DC (decomposition classes). Also the size of the wood had been measured. The position of the wood had been noted, as a position in a coordination system which was stretched by the trees. Besides I noted the species of the stub if possible. Most of the times this was easy because most of the trees had been either Pinus massoniana or Cunninghamia lanceolata. In case the tree stub re sprouted I took samples of the leaves to determine the species later. Further other variables had been noted e.g. fungi bodies present/ absent. Roughly half of the data had been taking by Chinese workers. Also for every DC two wood samples (one with a scope over 63 cm and one witch a scope under 63 cm) had been taken, if these DC with the sizes existed. A hole was drilled with the length of the radius of the stub. The actual depth of the hole was measured. The saw dust was collected and dried at 60 degree celsius. With the weight and the calculated volume of the hole the wood density was measured. The measurements were taken to match topographic and biotic parameters to decomposition classes. Furthermore, with the data it is possible to get an approximation of the amount of wood that had been left over after exploitation. Also it was intended to repeat the measurements to obtain chronological coarse woody debris (CWD) decomposition approximations for the experimental study sites.
Design:
Measured was every piece of wood (most of the times that had been tree stubs) which scope had been bigger than 14 cm in a sub plot in all VIP on both sites. The sub plot was defined as the inner square that is stretched by the planted trees of positions: 06:06, 06:14, 14:06 and 14:14,which is approximately a square with a side length of 10.4 meters. Also for every DC two wood samples (one with a scope over 63 cm and one witch a scope under 63 cm) had been taken, if these DC with the sizes existed. For sampling always the first stub that did accure on the plot were chosen.
Spatial extent:
Main Experiment Site A&B 29°08'-29°11'N 117°90'-117°93'E Measured was every piece of wood (most of the times that had been tree stubs) which scope had been bigger than 14 cm in a sub plot in all VIP on both sites A and B. The sub plot was defined as the inner square that is stretched by the planted trees of positions: 06:06, 06:14, 14:06 and 14:14,which is approximately a square with a side length of 10.4 meters. Also for every DC two wood samples (one with a scope over 63 cm and one witch a scope under 63 cm) had been taken, if these DC with the sizes existed. A hole was drilled with the length of the radius of the stub. The actual depth of the hole was measured. The saw dust was collected and dried at 60 degree celsius. With the weight and the calculated volume of the hole the wood density was measured in two ways. The Density was measured in to ways in the assumption that the hole is shaped like a conus or as a cylinder. The fromula for them was: Conus = depth of the hole*radius of the driller^2*pi Cylinder= ((depth of the hole*pi)/3) * (radius of the hole ^2 + radius of the driller* radius of the hole + radius of the driller^2) As unit for the density g/cm^3 was used. density = g/cm
Temporal extent:
08-11/2012
Taxonomic extent:
No information available
Measurement cirumstances:
No information available
Data analysis:
For the analysis the dependent variable is DC and the explenatory variable are: scbase Insects Fungi resprout burned 50% lost freebranch dens_cone dens_cyl

Filter:
Dataset column

Name:
Nr
Definition:
Nr of woody item (either stub or debris) per plot; Datagroup description: Nr,
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1
12
13
11
10
Contributors:
No information available

Dataset column

Name:
DC
Definition:
decomposition class of the stub
Unit:
No information available
Datagroup:
Decomposition class
Keywords:
decomposition
Values:
1
3
0
4
2
Contributors:
No information available

Dataset column

Name:
scbase
Definition:
Base diameter of the wood stub
Unit:
centimeter
Datagroup:
Sample diameter
Keywords:
basal diameter
Values:
103
105
100
104
102
Contributors:
No information available

Dataset column

Name:
sctop
Definition:
Top diameter of the wood stub
Unit:
centimeter
Datagroup:
Sample diameter
Keywords:
diameter
Values:
102
10
100
101
103
Contributors:
No information available

Dataset column

Name:
Species
Definition:
species of the stub; Datagroup description: y
Unit:
No information available
Datagroup:
Scientific plant species name
Keywords:
Scientific plant species name
Values:
Camellia spec.
Castanea henryi
Albizia kalkora
Camellia oleifera
Adinandra millettii
Contributors:
No information available

Dataset column

Name:
Position_X
Definition:
Position of the tree in east west direction, using the position numbers of the planted trees
Unit:
No information available
Datagroup:
Position within Main experiment plots
Keywords:
No information available
Values:
08:07
03:14
0
06:07
07:08
Contributors:
No information available

Dataset column

Name:
Position_Y
Definition:
Position of the tree in north south direction, using the position numbers of the planted trees
Unit:
No information available
Datagroup:
Position within Main experiment plots
Keywords:
No information available
Values:
06:07
01:11
01:12
07:08
0
Contributors:
No information available

Dataset column

Name:
h1
Definition:
first height of the stub
Unit:
centimeter
Datagroup:
Length of an Object
Keywords:
snag height
Values:
10
0
1
102
100
Contributors:
No information available

Dataset column

Name:
h2
Definition:
second height of the stub;
Unit:
centimeter
Datagroup:
Length of an Object
Keywords:
snag height
Values:
10
0.5
10.2
1
102
Contributors:
No information available

Dataset column

Name:
h3
Definition:
third height of the stub
Unit:
centimeter
Datagroup:
Length of an Object
Keywords:
snag height
Values:
10
100
0
102
1
Contributors:
No information available

Dataset column

Name:
h4
Definition:
fourth height of the stub;
Unit:
centimeter
Datagroup:
Length of an Object
Keywords:
snag height
Values:
100
10
0.5
1
0
Contributors:
No information available

Dataset column

Name:
Sub._sample
Definition:
number of wood sample for density measurement within plot (unique per plot); Datagroup description: Sub._sample
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
0
1
2
4
3
Contributors:
No information available

Dataset column

Name:
Fungi
Definition:
Occurrence of fungi fruit bodies on the stub yes(1)/no(0)
Unit:
No information available
Datagroup:
Fungi occurrence
Keywords:
fungi
Values:
0
1
Contributors:
No information available

Dataset column

Name:
Termites
Definition:
Occurrence of insects (termites) on the stub yes(1)/no(0)
Unit:
No information available
Datagroup:
Organisms found on or in specimen
Keywords:
insect
Values:
1
0
Contributors:
No information available

Dataset column

Name:
Person_recording
Definition:
Person_recording
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
Bing
unknown
John
Contributors:
No information available

Dataset column

Name:
resprout
Definition:
did the tree stub resprout yes (1)/ no (0)
Unit:
No information available
Datagroup:
Resprout
Keywords:
No information available
Values:
0
1
Contributors:
No information available

Dataset column

Name:
mulitstem
Definition:
mulitstem, number of stems more than one
Unit:
No information available
Datagroup:
Multistem
Keywords:
multistems
Values:
14
1
0
13
10
Contributors:
No information available

Dataset column

Name:
burned
Definition:
was the tree stub burned yes (1)/no(0); Datagroup description: indication if the sample has been burned
Unit:
No information available
Datagroup:
Burned
Keywords:
burning
Values:
1
0
Contributors:
No information available

Dataset column

Name:
lost_50
Definition:
is more (1) or less (0) than 50% of the stub decomposed
Unit:
No information available
Datagroup:
Decomposition class
Keywords:
decomposition
Values:
1
0
Contributors:
No information available

Dataset column

Name:
free_branch
Definition:
is it a stub or a free branch (1) or not (0)
Unit:
No information available
Datagroup:
Woody debris type
Keywords:
coarse woody debris
Values:
1
10
0
Contributors:
No information available

Dataset column

Name:
fallen_down
Definition:
does the stub stand upright (0) or does it lay on the ground (0)
Unit:
No information available
Datagroup:
Woody debris type
Keywords:
No information available
Values:
0
1
Contributors:
No information available

Dataset column

Name:
Plot
Definition:
plot code where the tree stub was measured; Datagroup description: y
Unit:
No information available
Datagroup:
Plot name Main experiment (letter, number code)
Keywords:
plot
Values:
C32
E31
E33
E27
D29
Contributors:
No information available

Dataset column

Name:
Date
Definition:
this is a date column; We provide three different types of dates: dates recognized in Excel are given to other software usually in the form "date(2009-07-14)", but you can also use the form "date(14.07.2009)" or just a 4 digit year, then specifying "year" in Data type; Datagroup description: y
Unit:
No information available
Datagroup:
Date time information
Keywords:
date
Values:
03.10.2012
01.09.2012
02.10.2012
02.09.2012
03.09.2012
Contributors:
No information available

Dataset column

Name:
ID_Code
Definition:
identification code of stubs, not unique in case of multistem individuals; Datagroup description: Helper column to understand other columns in this data set
Unit:
No information available
Datagroup:
Identifier
Keywords:
No information available
Values:
Site_A_C32_1
Site_A_C32_13
Site_A_C32_12
Site_A_C32_10
Site_A_C32_11
Contributors:
No information available

Dataset column

Name:
Site
Definition:
Site
Unit:
No information available
Datagroup:
Experimental Site
Keywords:
Site A, Site B
Values:
Site_B
Site_A
Contributors:
No information available

Dataset column

Name:
Class
Definition:
the phylogenetic class of the plant
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
gymnosperms
angiosperms
Contributors:
No information available

Dataset column

Name:
dens_cone
Definition:
wood density calculated with the approximation of cone
Unit:
g per cubic centimeter
Datagroup:
Wood density
Keywords:
wood density
Values:
0.0455401084
0.037189291900000004
0.0488750207
0.0557357834
0.053070159000000006
Contributors:
No information available

Dataset column

Name:
dens_cycl
Definition:
wood density calculated with the approximation of cylinder
Unit:
g per cubic centimeter
Datagroup:
Wood density
Keywords:
No information available
Values:
0.0325494181
0.044566479000000006
0.038371758000000006
0.0531238268
0.050583122
Contributors:
No information available

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54 pietsch medium

Katherina
Pietsch

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Christian
Wirth

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