BEF-China | Main Experiment: Soil CNS and pH analyses of depth increments on Site A (VIPs and VIPReps 2014)

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Title:

Main Experiment: Soil CNS and pH analyses of depth increments on Site A (VIPs and VIPReps 2014)

Access rights:

Free within projects

Usage rights:

No information available

Published:

No information available

Abstract:

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

Design:

Five 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, 30-50 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 A 29°08'-29°11'N 117°90'-117°93'E

Temporal extent:

Samples were collected 2014. Lab analyses were carried out from 2014 to 2015.

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.

Filter:

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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:

E23
E31
C32
E24
E33

Contributors:

No information available

Dataset column

Name:

sample_num

Definition:

field name of the sample; Datagroup description: Helper

Unit:

No information available

Datagroup:

Helper

Keywords:

soil base

Values:

2014_A-C32-5
2014_A-C32-4
2014_A-C32-3
2014_A-C32-1
2014_A-C32-2

Contributors:

Geißler, C., Goebes, P.

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:

22873
22874
22875
22877
22876

Contributors:

Flaiz, S.

Dataset column

Name:

depth_lb

Definition:

depth (lower boundary) of the sample; Datagroup description: Soil depth

Unit:

Datagroup:

Soil depth

Keywords:

soil, soil depth

Values:

20
30
5
50
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:

Datagroup:

pH value

Keywords:

Values:

4.4
4.27
4.24
4.34
4.37

Contributors:

No information available

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:

Datagroup:

pH value

Keywords:

Values:

3.5
3.47
3.49
3.53
3.52

Contributors:

No information available

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

Values:

0.05503406748175621
0.05155109986662865
0.05111108347773552
0.04841114953160286
0.05626979097723961

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

Values:

0.3647175431251526
0.37357622385025024
0.3713761866092682
0.3539162874221802
0.3712614178657532

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:

Values: