Main Experiment: Soil lipid fractions from the main experiment Site B 2013 - preliminary

Usage Rights

This data is Private.

Dataset Abstract

Individual soil lipid fractions from site B from the Main Experiment.

Dataset Design

Plots in the Main Experiment of the BEF-China experiment are planted with trees in distinct diversity levels with the same tree individual density. Soil samples were taken between individual trees… Soil was analysed using machine x and procedure y.

Spatial Extent

Main Experiment of the BEF-China Experiment, site B, Xingangshan, China.
29°08'-29°11'N
117°90'-117°93'E

Taxonomic Extent

bacterial or fungal communities based on lipid indicators, the fungal to bacterial ratio, or total microbial biomass (lipid biomass). See column descriptions for more detail about individual lipid indicators.

Data Analysis

Microbial biomass: all lipids less than 20 carbons in length were summed to give the total biomass. Lipids were otherwise used according to specific microbial indicator groups and either the abundance (nmol lipid g dry wt-1) or in relative abundance (abundance divided by total lipid biomass). Data were then analyzed in R using multivariate (NMDS) or univariate (co-variate regressions and ANOVA) methods. The columns of CSP name, depth, and horizon name are explanitory variables, the response columns are the lipid biomass, fungal to bacterial ratio, and the individual fatty acid indicators --- note that the age classes analyzed here are not the most current age classes. They were changed, but analysis was already deep underway on the paper at that point.

Data columns available in the raw data part of this dataset

TAG
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.
Data group: t or s TAG Main Experiment
Keywords: GIS, tree individual, location
Values
t208290010717
t208290010716
t208290010714
t208290010715
PTAG
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.
Data group: BEF research plot name
Keywords: Main Experiment, Site B, location
Values
p208290
PLOT_NO
name of each plot, coded with letters and numbers
Data group: Plot name Main experiment (letter, number code)
Keywords: Main Experiment, Site B, location
Values
H29
CELL_X
within plot x grid position starting at 0 and ending at 19, starting at south west corner
Unit: number
Data group: Tree or shrub position within experimental plot
Keywords: location
Values
07
CELL_Y
within plot y grid position starting at 0 and ending at 19, starting at south west corner
Unit: number
Data group: Tree or shrub position within experimental plot
Keywords: location
Values
15
16
14
17
SPEC_N_
species name, originally planned species; Source: Flora of China, Helge Bruelheide (derived from datagroup)
Data group: Scientific plant species name
Keywords: species
Values
Alniphyllum fortunei
depth
approximate soil depth from which the sample originates, compare the lipid overview dataset for a lookup to combine the sample with the soil base in Tübingen
Data group: Soil depth
Keywords: soil depth
Values
10-20cm
0-10cm
0-5cm
10-30cm
20-30cm
lipid
Lipid type; ; Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup); Source: Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup)
Data group: Phospholipid fatty acid profiles (PLFA)
Keywords: fungi, soil lipids, fatty acid, actinomycetes, bacteria, Gram-positive bacteria, Gram-negative bacteria, AMF, arbuscular mycorrhizal fungi
Values
12:0
Abundance
abundance of the fatty acid, fatty acid class is saturated, not a specific microbial indicator; ;; ; Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup); Source: Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup)
Unit: nmol g dry soil-1
Data group: Abundance
Keywords: biomass, abundance
Values
0
0.066
0.024
0.044
0.032