Title:
Main Experiment: Tree inventory Main experiment Site B 2013
Access rights:
Free for members
Usage rights:
No information available
Published:
No information available
Abstract:
This data documents the tree growth parameters in 2013 for site B, belonging to the annual inventory taking place for both site A and site B. Individual-tree growth is a function of stand attributes, local neighbors, plant size, plant damage, genotype, and local abiotic site conditions. Given a certain time phase (combing further data along the timeline), the following scientific questions will be investigated: a) How does the within-plot individual-tree growth vary within and among species as a function of species richness? b) Wheather diversity reduces competition by quantifying local neighbour interactions in terms of growth rates and branch demography? c) What are the ecological importance of phenotypic plasticity of tree individuals in relation to competition, species richenss, and local terrain conditions? d) How the individual-tree growth is affected by soil feed-backs (mycorrhiza, pedogenetic processes,soil chemistry and nutrient cycle)? The overall objective with the data to be achieved is to test the hypothesis that the diversity effect at the plot level is the overall result of the diversity effects at the local neighbourhood level. This data as a basis can also be linked to other abiotic and biotic factors for investigating the interactions between the tree growth performance and abiotic and biotic factors. Measurement for this data took place in October 2010. Measurements were conducted in the central part (extended core area) of all 1mu-plots in site A. Extended core area is the central 6 * 6 trees in the monoculture and 2-species mixtures ( total 36 tree positions per 1mu-plot), the central 12 * 12 trees in the 4-,8-,16-,24-species mixtures (total 144 tree positions per 1 mu-plot). By applying the conventional measuring methods direct in the field, tree position, tree species, total height, stem diameter 5 cm above ground height (gd), the diameter at breast height (dbh), the distance up to the first branch, the distance up to the longest branch, the diameter, the length, the azimuth and the angle of the longest branch, the crown diameters (N-S and E-W) were measured and the number of branches were counted.
Design:
The tree positions in the so called extended core area for each 1mu-plot were surveyed. The extended core area is the central 6 * 6 tree positions in the monocultres and 2-species mixtures (36 tree positions per 1mu-plot) and the central 12 * 12 tree positions in the 4-, 8-, 16- or 24- species mixtures (144 tree positions per 1mu-plot).
Spatial extent:
This data was collected from site B within the BEF-China experiment, which is located in a hilly subtropical region near Xingangshan Township, Jiangxi Province (29.08-29.11 N, 117.90- 117.93 E), China. The mean annual temperature is 16.7 celsius degrees and the mean annual average precipitation 1821 mm. The natural vegetation of this region is subtropical broad-leaved forest with dominance in abundance of evergreen species (Bruelheide et al. 2011). Site B was planted in 2010 and covers a total area of 26.6 ha, ranging in altitude from 105 to 190 m.
Temporal extent:
No information available
Taxonomic extent:
No information available
Measurement cirumstances:
The measurements were conducted after the weeding in autumn and before the deciduous trees leaved off. Choosing this season is because a) weeded plots shorten the time consumed for identifying the tree positions; b) during this period, trees reach their highest height for this growing season (Pilot Experiment approved, unpublished data); c) Leaf-on gives a more accurate estimation on crown diameter.
Data analysis:
Castanopsis sclerophylla
Cyclobalanopsis glauca
Castanopsis eyrei
Lithocarpus glaber
Schima superba
Cinnamomum camphora
Daphniphyllum oldhamii
Diospyros japonica
Betula luminifera
Castanopsis fargesii
Celtis biondii
Elaeocarpus japonicus
Michilus grijsii
Machilus leptophylla
Manglietia fordiana
Quercus phillyreoides
Alanthus altissima
Alniphyllum fortunei
Elaeocarpus chinensis
Elaeocarpus glabripetalus
Idesia omeiensis
Machilus thunbergii
Meliosma flexuosa
Phoebe bournei
Filter:
Dataset column
Name:
TAG
Definition:
code for planting locations, 12 digits with "t" in front; Datagroup description: Tree or shrub tags consist of 12 digits: The first 6 are the site plot name: _1_ site _2/3_ row, counting from North _4/5_ column, counting from west _6_ is the plot moved? Is it a quarter plot? The next 6 digits describe the tree individual _7/8_ type of individual (01 planned tree, 02 other tree than planted but in a given plot somewhere, 03 planned shrub, 04 other shrub within this plot) _9/10_ x grid position within plot, starting from southwest northwards _11/12 y grid position, starting from southwest eastwards.
Unit:
No information available
Datagroup:
t or s TAG Main Experiment
Keywords:
tree individual, location, object
Values:
t203270010405 |
t203270010408 |
t203270010404 |
t203270010406 |
t203270010407 |
Contributors:
No information available
Dataset column
Name:
plot
Definition:
plot code, BEF research plot name, 6 digits with "p" in front; Datagroup description: Research plots of the Biodiversity - Ecosystem functioning experiment (BEF-China). Main Experiment plots have a size of 1 mu, which is about 25x25m^2 in horizontal projection. Pilot Study Plots have a size of 1x1 m^2. Research plots on the main experiment have a "p" in front of their IDs and then a 6 digit code: Plots in the main sites A and B are named according to their position in the original spreadsheet, in which they were designed. They consist of 6 digits: _1st digit_: Site (1:A, 2:B), _digit 2and3_: southwards row: as in spreadsheets the rows are named from the top to the bottom; _digit 4 and 5_: westward column: as in the original spreadsheet, but the letters are converted to numbers (A=01, B=02); _6th digit_: indicator, if the plot has been shifted a quarter mu. Example: "p205260": "p" means that this is a plot that is specified. "2" means, that we are at site B. Now the coordinates of the south - west corner: "0526". Since "e" is the fifth letter of the alphabet, this is Plot E26. The last digit "0" means that this plot was not moved by a quarter of a Mu, as some sites in Site B. The 6th digit can also indicate the subplot within the plot. "5", "6", "7", "8" indicate the northwest, northeast, southeast, and southwest quarter plot respectively.
Unit:
No information available
Datagroup:
BEF research plot name
Keywords:
Main Experiment, Site A
Values:
p204260 |
p205240 |
p204250 |
p204270 |
p203270 |
Contributors:
No information available
Dataset column
Name:
id_2013
Definition:
the grid position of the individual according to SP2 label
Unit:
No information available
Datagroup:
IdTree SP2
Keywords:
No information available
Values:
id0407 |
id0404 |
id0408 |
id0405 |
id0406 |
Contributors:
No information available
Dataset column
Name:
barcodePos
Definition:
the grid position of the individual according to Z1/Z2 label
Unit:
No information available
Datagroup:
Individual position within plot in Site A or B (given by SP1/SP2)
Keywords:
No information available
Values:
pos0000 |
pos0066 |
pos0203 |
pos0204 |
pos0002 |
Contributors:
No information available
Dataset column
Name:
sppcode
Definition:
the species code surveyed in 2011
Unit:
No information available
Datagroup:
Species codes (Species numbers in the Main experiment)
Keywords:
No information available
Values:
11 |
12 |
13 |
14 |
15 |
Contributors:
No information available
Dataset column
Name:
height_2013
Definition:
the total tree height; Instrumentation: linear tape
Unit:
centimeter
Datagroup:
Plant height
Keywords:
height, response variable
Values:
102 |
101 |
10 |
100 |
1 |
Contributors:
No information available
Dataset column
Name:
cbh_2013
Definition:
the crown base height; Instrumentation: linear tape
Unit:
centimeter
Datagroup:
Crown architecture
Keywords:
crown. Crown architecture
Values:
10 |
0 |
101 |
1 |
100 |
Contributors:
No information available
Dataset column
Name:
llong_2013
Definition:
the length of the longest branch
Unit:
centimeter
Datagroup:
Crown architectural parameters
Keywords:
branch, crown, crown architecture
Values:
102 |
100 |
101 |
10 |
1 |
Contributors:
No information available
Dataset column
Name:
hlong_2013
Definition:
the height of the longest branch
Unit:
centimeter
Datagroup:
Crown architectural parameters
Keywords:
branch, crown, crown architecture
Values:
1 |
100 |
10 |
0 |
101 |
Contributors:
No information available
Dataset column
Name:
anlong_2013
Definition:
the angle of the longest branch
Unit:
degrees
Datagroup:
Branch demography
Keywords:
branch, crown, crown architecture
Values:
20 |
10 |
17 |
15 |
0 |
Contributors:
No information available
Dataset column
Name:
azlong_2013
Definition:
the azimuth of the longest branch
Unit:
degrees
Datagroup:
Branch demography
Keywords:
branch, crown, crown architecture
Values:
105 |
10 |
100 |
1 |
0 |
Contributors:
No information available
Dataset column
Name:
dlong_2013
Definition:
the diameter of the longest branch
Unit:
centimeter
Datagroup:
Branch demography
Keywords:
branch, crown architecture
Values:
0.4 |
0.1 |
0.2 |
0.3 |
0 |
Contributors:
No information available
Dataset column
Name:
gdew_2013
Definition:
the stem diameter at 5 cm aboveground, measured along the E-W direction
Unit:
centimeter
Datagroup:
Basal diameter
Keywords:
basal diameter, response variable
Values:
0.3 |
0.1 |
0.5 |
0.4 |
0.2 |
Contributors:
No information available
Dataset column
Name:
gdns_2013
Definition:
the stem diameter at 5 cm aboveground, measured along the N-S direction
Unit:
centimeter
Datagroup:
Basal diameter
Keywords:
basal diameter, response variable
Values:
0.2 |
0.3 |
0.4 |
0.1 |
0 |
Contributors:
No information available
Dataset column
Name:
dbh1_2013
Definition:
the diameter at breast height ( 130 cm aboveground )
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh, response variable
Values:
0.3 |
0.2 |
0.5 |
0.4 |
0.6 |
Contributors:
No information available
Dataset column
Name:
dbh2_2013
Definition:
the diameter at breast height ( 130 cm aboveground ) provided by multistems
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
branch, response variable
Values:
0.4 |
0.5 |
0.3 |
0.6 |
0.7 |
Contributors:
No information available
Dataset column
Name:
EW_2013
Definition:
the crown diameter measured along the E-W direction
Unit:
centimeter
Datagroup:
Crown architectural parameters
Keywords:
crown architecture
Values:
10 |
101 |
0 |
100 |
1 |
Contributors:
No information available
Dataset column
Name:
NS_2013
Definition:
the crown diameter measured along the N-S direction
Unit:
centimeter
Datagroup:
Crown architectural parameters
Keywords:
crown architecture
Values:
101 |
10 |
100 |
1 |
0 |
Contributors:
No information available
Dataset column
Name:
BrDead_2013
Definition:
number of dead branches
Unit:
No information available
Datagroup:
Branch demography
Keywords:
branch, response variable
Values:
1 |
11 |
12 |
0 |
10 |
Contributors:
No information available
Dataset column
Name:
BrAlive_2013
Definition:
number of living branches
Unit:
No information available
Datagroup:
Branch demography
Keywords:
branch, response variable
Values:
101 |
0 |
10 |
1 |
100 |
Contributors:
No information available
Dataset column
Name:
broken_2013
Definition:
1/0, inidcating if tree stem was broken or not
Unit:
No information available
Datagroup:
Helper
Keywords:
tree, census, dead
Values:
NA |
1 |
7 |
0 |
4 |
Contributors:
No information available
Dataset column
Name:
team
Definition:
census team
Unit:
No information available
Datagroup:
Helper
Keywords:
census
Values:
t1 |
t3 |
t10 |
t2 |
t11 |
Contributors:
No information available
Dataset column
Name:
Date
Definition:
Date of census (d/dd/mm/yyyy)
Unit:
No information available
Datagroup:
Date time information
Keywords:
date
Values:
d02102013 |
d05102013 |
d06102013 |
d03102013 |
d04102013 |
Contributors:
No information available
Dataset column
Name:
comment_2013
Definition:
comments on the respective tree individual
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
a not-planted tree 3 on this position |
another spp14 on the same position might be measured in the previous years |
a not-planted tree on this position |
a not-planted tree |
extra for matching the tree individual from year2012 |
Contributors:
No information available
Dataset column
Name:
match1312
Definition:
logical; indicating wether the respective tree could be matched with the same individual measured in 2012
Unit:
No information available
Datagroup:
Helper
Keywords:
census, match
Values:
y |
n |
Contributors:
No information available
Dataset column
Name:
gd_mean_2013
Definition:
the mean stem diameter at 5 cm aboveground, calcualted based on gdew and gdns
Unit:
square centimeters
Datagroup:
Basal diameter
Keywords:
basal diameter
Values:
0.1 |
0.25 |
0.15 |
0.3 |
0.2 |
Contributors:
No information available
No information available
No information available
No information avialable
Filter:
No information available
Filter:
No information available
No information available
No information available
No information available
No information available