CSPs: Soil CNS and pH analyses of depth increments in the Comparative Study Plots

Usage Rights

This data is Free for public.

Permission is granted to anybody to access, use and publish all open for public data freely. The commercial use of any data is prohibited. The quality and completeness of data cannot be guaranteed. Users employ these data at their own risk. In order to make attribution of use for owners of the data possible, the identifier of ownership of data must be retained with every data record. Users must publicly acknowledge, in conjunction with the use of the data, the data owners. Cite the data as follows: Geißler, C., Scholten, T. and Kühn, P. (2009): CNS and pH analyses of soils: depth increments of 27 Comparative Study Plots . BEF-China data portal (Accessed through URL http://china.befdata.biow.uni-leipzig.de/datasets/82)

Dataset Abstract

Soil chemical laboratory analyses of all 27 comparative study plots. Contents of carbon, nitrogen and sulphur as well as pH-values (H2O and KCl) of six depth increments per CSP. Total depth is 50 cm.

Dataset Design

Depth increments were taken from systematic corings: 1 coring per subplot means 9 corings per CSP. Soil cores had a diameter of 3cm². Samples were bulked from the 9 corings to one sample per depth increment (0-5, 5-10, 10-20, 20-30, 30-40, 40-50 cm.), so that 6 samples exist per CSP. samples were air-dried, sieved < 2mm, ground using a ball mill, using around 40 mg for measurement with vario EL III (Elementar)

Spatial Extent

The Gutianshan National Nature Reserve (NNR) is located in the western part of Zhejiang Province (29º8'18" – 29º17'29" N, 118º2'14" – 118º11'12" E, Fig. 1). The Gutianshan NNR has an area of approximately 81 km2. From 27 comparative study plots (CSPs) soil samples were taken in 6 depth increments per CSP

Published

doi:10.1890/09-2172.1

Temporal Extent

Samples were collected 2008 and 2009. Lab analyses were carried from 2009 to 2011

Taxonomic Extent

no organisms

Data Analysis

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

Paper proposal submissions

Published

2012

Data columns available in the raw data part of this dataset

lab_num
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
3378
3380
3382
3379
3381
* Flaiz, S. also contributed to this column.
CSP
name of the CSP in the Nature ReserveBEF research plot nameReasearch plots of the Biodiversity - Ecosystem functioning experiment (BEF-China). There are three main sites for research plots in the BEF Experiment: Comparative Study Plots (CSP) in the Gutianshan Nature Reserve, having a size of 30x30m^2, measured on the ground.
Data group: BEF research plot name
Keywords: CSP
Values
CSP03
CSP01
CSP04
CSP02
CSP05
sample_num
field name of the sample
Data group: Helper
Keywords: soil base
Values
CSP01-S-1-1
CSP01-S-1-4
CSP01-S-1-5
CSP01-S-1-2
CSP01-S-1-3
depth_lb
depth (lower boundary) of the sample
Unit: cm
Data group: Soil depth
Keywords: soil, soil depth
Values
20
30
5
10
40
pH_H2O
pH value, mean from two values determined by H20 method. solutionH20 : soil = 2.5:1
Unit: pH
Data group: pH value
Keywords: pH
Values
3.9
4.2
4.1
4.3
4.4
* Flaiz, S. also contributed to this column.
pH_KCl
pH value, mean from two values determined in 1 M KCL
Unit: pH
Data group: pH value
Keywords: pH
Values
3.6
3.4
3.7
3.5
3.3
* Flaiz, S. also contributed to this column.
N_t
total organic nitrogen content
Unit: Mass-%
Data group: Nitrogen
Keywords: SON, nitrogen
Values
<0.02
0.02
0.04
0.03
0.05
* Flaiz, S. also contributed to this column.
C_t
total soil organic carbon content
Unit: Mass-%
Data group: Carbon
Keywords: SOC, carbon
Values
0.23
0.27
0.21
0.2
0.25
* Flaiz, S. also contributed to this column.
S_t
total sulphur content
Unit: Mass-%
Data group: Sulphur
Keywords: S
Values
< 0.05
0.06
0.05
0.05481838807463646
0
* Flaiz, S. also contributed to this column.
C_N
ratio organic carbon/organic nitrogen
Unit: ratio
Data group: Carbon Nitrogen ratio
Keywords: C/N ratio
Values
10.6
10.3
10.8
10.7
10
* Flaiz, S. also contributed to this column.