Main Experiment: Soil CNS and pH analyses of depth increments on Site B (2010-2011)

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Cite the data as follows:

Kühn, P., Scholten, T., and Seitz, S. (2016): Main Experiment: Soil CNS and pH analyses of depth increments on Site B (2010-2011). (Accessed through URL: http://china.befdata.biow.uni-leipzig.de/datasets/332)

Dataset Abstract

Soil chemical laboratory analyses of all plots on Site B. Contents of carbon, nitrogen and sulphur as well as pH-values (in H2O and KCl) of depth increments per plot.

Dataset Design

At the beginning, six depth increments were taken from systematic corings: Nine corings per plot were pooled to one sample per depth increment (0-5, 5-10, 10-20, 20-30, 30-40, 40-50 cm). Sampling was then reduced to five depth increments (0-5, 5-10, 10-20, 20-30, 30-50 cm). Samples were air-dried, sieved < 2mm, grinded using a ball mill. Subsamples of 40 mg were used for measurements with an elemental analyzer (Vario EL III, Elementar, Hanau, Germany).

Spatial Extent

Experimental Site B
29°08'-29°11'N
117°90'-117°93'E

Temporal Extent

Samples were collected from 2010 to 2011. Lab analyses were carried out from 2010 to 2012.

Taxonomic Extent

No organisms

Data Analysis

pH (KCl) is the maximum potential acidity under present soil conditions.
pH (H2O) is the current acidity.

Paper proposal submissions

Published

2013

Data columns available in the raw data part of this dataset

plot_number
Plot Letter Code; Datagroup description: Plot name (letter, number code)
Data group: Plot name Main experiment (letter, number code)
Keywords: Site A, location
Values
D26
D25
D27
D28
C27
sample_num
field name of the sample; Datagroup description: Helper
Data group: Identifier
Keywords: soil base
Values
EXPB-S-C27-4
EXPB-S-C27-5
EXPB-S-C27-2
EXPB-S-C27-1
EXPB-S-C27-3
* Geißler, C., Goebes, P. also contributed to this column.
lab_num
laboratory number of laboratory of soil science and geoecology in Tübingen; Datagroup description: Laboratory number of Laboratory of Soil Science and Geoecology in Tübingen
Data group: Laboratory number of Laboratory of Soil Science and Geoecology in Tübingen
Keywords: soil base
Values
21027
21026
21028
21030
21029
* Flaiz, S. also contributed to this column.
depth_lb
depth (lower boundary) of the sample; Datagroup description: Soil depth
Unit: cm
Data group: Soil depth
Keywords: soil, soil depth
Values
20
5
10
30
40
pH_H2O
pH value, mean from two values determined by H20 method. solutionH20 : soil = 2.5:1; Datagroup description: pH value; Instrumentation: electrodes Sentix 81 and WTW pH-meter (derived from datagroup); Instrumentation: electrodes Sentix 81 and WTW pH-meter (derived from datagroup)
Unit: pH
Data group: pH value
Keywords: pH, response variable
Values
3.8
3.83
3.73
3.79
3.74
* Flaiz, S. also contributed to this column.
pH_KCl
pH value, mean from two values determined in 1 M KCL; Datagroup description: pH value; Instrumentation: electrodes Sentix 81 and WTW pH-meter (derived from datagroup); Instrumentation: electrodes Sentix 81 and WTW pH-meter (derived from datagroup)
Unit: pH
Data group: pH value
Keywords: pH, response variable
Values
3.18
3.13
3.15
3.19
3.17
* Flaiz, S. also contributed to this column.
N_t
total organic nitrogen content; Datagroup description: Nitrogen; Instrumentation: Elemental Analyzer (derived from datagroup); Instrumentation: Elemental Analyzer (derived from datagroup)
Unit: Mass-%
Data group: Nitrogen
Keywords: SON, nitrogen, response variable
Values
0.05356123298406601
0.04040925204753876
0.053823698312044144
0.05206064134836197
0.05353284627199173
C_t
total soil organic carbon content; Datagroup description: Carbon content
Unit: Mass-%
Data group: Carbon
Keywords: SOC, carbon, response variable
Values
0.2849503457546234
0.2734487056732178
0.31280672550201416
0.277434766292572
0.24051223695278168
S_t
total sulphur content; Datagroup description: Sulphur; Instrumentation: heat combustion and thermal conductivity detection using a CNS-Elementar analyser, varioEL III from Elementar (derived from datagroup); Instrumentation: heat combustion and thermal conductivity detection using a CNS-Elementar analyser, varioEL III from Elementar (derived from datagroup); Datagroup description: S content
Unit: Mass-%
Data group: Sulphur
Keywords: S, response variable
Values
0.05101203918457031
< 0.05
0.054978176951408386
0.053225964307785034
C_N
ratio organic carbon/organic nitrogen
Unit: ratio
Data group: Carbon Nitrogen ratio
Keywords: response variable, C/N ratio
Values
10.019732949941789
10.008020580047221
10.016668757359367
10.016111466926203
10.01477380829771