Main Experiment: Cation exchange capacity, base saturation and soil fertility attributes of depth increments on Site A (2010-2011)

Usage Rights

This data is Free for members.

Dataset 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.

Dataset 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

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
C32
E30
D33
D32
C33
sample_num
field name of the sample; Datagroup description: Helper
Data group: Identifier
Keywords: soil base
Values
EXPA-S-C32-2
EXPA-S-C32-5
EXPA-S-C32-1
EXPA-S-C32-4
EXPA-S-C32-3
* 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
4859
4861
4858
4862
4860
* Flaiz, S. also contributed to this column.
depth_lb
depth (lower boundary) of the sample
Unit: cm
Data group: Soil depth
Keywords: soil, soil depth
Values
5
30
20
10
40
IE_Na
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: Na
Values
0.26267272508742934
0.2612422645781036
0.2620021720748152
0.2611815500077173
< 0.26
* Flaiz, S. also contributed to this column.
IE_K
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: K
Values
0.4586955913113962
0.3697566537581411
0.4599932501892583
0.45575031830647394
< 0.30
* Flaiz, S. also contributed to this column.
IE_Mg
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: Mg
Values
0.6130066321160043
0.44489230095394733
0.537203068478751
0.5422097333552631
0.6081353893338816
* Flaiz, S. also contributed to this column.
IE_Ca
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: Ca
Values
0.4695122987492757
0.45304201805552247
0.48997592088550185
0.47512160758483035
0.45231390801075017
* Flaiz, S. also contributed to this column.
IE_Mn
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: Mn
Values
0.3074381090644339
0.30665400327630143
0.24651171394248272
0.29175011820196695
0.29967945199689056
* Flaiz, S. also contributed to this column.
IE_Fe
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: Fe
Values
0.0925340870784103
0.09330577774039228
0.09059460967062792
< 0.09
0.09123086853194291
* Flaiz, S. also contributed to this column.
IE_Al
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: Al
Values
11.296795040711903
11.385404138675625
10.108233695595107
11.405609508958133
12.361256010952339
* Flaiz, S. also contributed to this column.
IE_H
ion equivalent (IE) of element
Unit: µmolc/g
Data group: Exchangable cations
Keywords: H
Values
0.29563444991717625
0.28039595828137726
0.05284743713290507
0.12068117345596172
0.20363372308551467
* Flaiz, S. also contributed to this column.
CECeff
effective cation exchange capacity
Unit: µmolc/g
Data group: Exchangable cations
Keywords: cation exchange capacity
Values
105.2077225089176
104.63124575042924
100.22757035571178
103.05554701194639
104.60119920277177
* Flaiz, S. also contributed to this column.
BS
base saturation, ratio between 0 and 100 %, sum of IEs(Na, K, Mg, Ca); as percentage of CECeff
Unit: %
Data group: Base saturation
Keywords: base saturation
Values
10.062393657230633
10.06646881933301
10.061952942770716
10.00681292781883
10.037708563464186
* Flaiz, S. also contributed to this column.