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Title:
Main Experiment: Soil CNS and pH analyses of depth increments on Site B (2010-2011)
Access rights:
Free for public
Usage rights:
No information available
Published:
No information available
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.
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
Measurement cirumstances:
No information available
Data analysis:
pH (KCl) is the maximum potential acidity under present soil conditions. pH (H2O) is the current acidity.

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Dataset column

Name:
plot_number
Definition:
Plot Letter Code; Datagroup description: Plot name (letter, number code)
Unit:
No information available
Datagroup:
Plot name Main experiment (letter, number code)
Keywords:
Site A, location
Values:
D27
D26
C27
D28
D25
Contributors:
No information available

Dataset column

Name:
sample_num
Definition:
field name of the sample; Datagroup description: Helper
Unit:
No information available
Datagroup:
Identifier
Keywords:
soil base
Values:
EXPB-S-C27-2
EXPB-S-C27-4
EXPB-S-C27-3
EXPB-S-C27-5
EXPB-S-C27-1
Contributors:

Dataset column

Name:
lab_num
Definition:
laboratory number of laboratory of soil science and geoecology in Tübingen; Datagroup description: Laboratory number of Laboratory of Soil Science and Geoecology in Tübingen
Unit:
No information available
Datagroup:
Laboratory number of Laboratory of Soil Science and Geoecology in Tübingen
Keywords:
soil base
Values:
21029
21030
21026
21028
21027
Contributors:

Dataset column

Name:
depth_lb
Definition:
depth (lower boundary) of the sample; Datagroup description: Soil depth
Unit:
cm
Datagroup:
Soil depth
Keywords:
soil, soil depth
Values:
40
20
30
5
10
Contributors:
No information available

Dataset column

Name:
pH_H2O
Definition:
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
Datagroup:
pH value
Keywords:
pH, response variable
Values:
3.73
3.83
3.8
3.79
3.74
Contributors:

Dataset column

Name:
pH_KCl
Definition:
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
Datagroup:
pH value
Keywords:
pH, response variable
Values:
3.19
3.17
3.13
3.15
3.18
Contributors:

Dataset column

Name:
N_t
Definition:
total organic nitrogen content; Datagroup description: Nitrogen; Instrumentation: Elemental Analyzer (derived from datagroup); Instrumentation: Elemental Analyzer (derived from datagroup)
Unit:
Mass-%
Datagroup:
Nitrogen
Keywords:
SON, nitrogen, response variable
Values:
0.05353284627199173
0.05206064134836197
0.053823698312044144
0.05356123298406601
0.04040925204753876
Contributors:
No information available

Dataset column

Name:
C_t
Definition:
total soil organic carbon content; Datagroup description: Carbon content
Unit:
Mass-%
Datagroup:
Carbon
Keywords:
SOC, carbon, response variable
Values:
0.31280672550201416
0.277434766292572
0.2849503457546234
0.24051223695278168
0.2734487056732178
Contributors:
No information available

Dataset column

Name:
S_t
Definition:
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-%
Datagroup:
Sulphur
Keywords:
S, response variable
Values:
0.054978176951408386
0.05101203918457031
< 0.05
0.053225964307785034
Contributors:
No information available

Dataset column

Name:
C_N
Definition:
ratio organic carbon/organic nitrogen
Unit:
ratio
Datagroup:
Carbon Nitrogen ratio
Keywords:
response variable, C/N ratio
Values:
10.016111466926203
10.016668757359367
10.008020580047221
10.019732949941789
10.01477380829771
Contributors:
No information available

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Peter
Kühn

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