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Title:
Main Experiment: Cation exchange capacity, base saturation and soil fertility attributes of depth increments on Site A (2010-2011)
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Free for members
Usage rights:
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Published:
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Abstract:
Soil chemical laboratory analyses of VIPs and selected plots on Site A. Cation exchange capacity, base saturation and soil fertility attributes of six depth increments per plot.
Design:
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). Samples were air-dried, sieved < 2mm, grinded using a ball mill. Cation exchange capacity (CEC) and concentrations of Na, K, Mg, Ca, Mn, Fe, Al and H were measured with an ICP-OES (Perkin Elmer DV 5300 ICP OES). The soil samples were percolated with an unbuffered 1 M NH4Cl solution (effective cation exchange capacity). Base saturation percentage (BS) was calculated as proportion of the CEC accounted for by exchangeable bases Na, K, Mg and Ca.
Spatial extent:
Experimental Site A 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:
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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:
E30
C32
D32
C33
D33
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:
EXPA-S-C32-4
EXPA-S-C32-3
EXPA-S-C32-2
EXPA-S-C32-1
EXPA-S-C32-5
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:
4861
4859
4858
4860
4862
Contributors:

Dataset column

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

Dataset column

Name:
IE_Na
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
Na
Values:
< 0.26
0.2611815500077173
0.2612422645781036
0.2620021720748152
0.26267272508742934
Contributors:

Dataset column

Name:
IE_K
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
K
Values:
< 0.30
0.3697566537581411
0.4599932501892583
0.45575031830647394
0.4586955913113962
Contributors:

Dataset column

Name:
IE_Mg
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
Mg
Values:
0.6130066321160043
0.5422097333552631
0.537203068478751
0.6081353893338816
0.44489230095394733
Contributors:

Dataset column

Name:
IE_Ca
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
Ca
Values:
0.45231390801075017
0.45304201805552247
0.48997592088550185
0.4695122987492757
0.47512160758483035
Contributors:

Dataset column

Name:
IE_Mn
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
Mn
Values:
0.3074381090644339
0.30665400327630143
0.29967945199689056
0.24651171394248272
0.29175011820196695
Contributors:

Dataset column

Name:
IE_Fe
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
Fe
Values:
0.09330577774039228
0.09059460967062792
< 0.09
0.0925340870784103
0.09123086853194291
Contributors:

Dataset column

Name:
IE_Al
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
Al
Values:
10.108233695595107
12.361256010952339
11.385404138675625
11.405609508958133
11.296795040711903
Contributors:

Dataset column

Name:
IE_H
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
H
Values:
0.28039595828137726
0.05284743713290507
0.29563444991717625
0.20363372308551467
0.12068117345596172
Contributors:

Dataset column

Name:
CECeff
Definition:
effective cation exchange capacity
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
cation exchange capacity
Values:
104.60119920277177
100.22757035571178
105.2077225089176
103.05554701194639
104.63124575042924
Contributors:

Dataset column

Name:
BS
Definition:
base saturation, ratio between 0 and 100 %, sum of IEs(Na, K, Mg, Ca); as percentage of CECeff
Unit:
%
Datagroup:
Base saturation
Keywords:
base saturation
Values:
10.06646881933301
10.061952942770716
10.037708563464186
10.062393657230633
10.00681292781883
Contributors:

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