Header logo

Title:
NILEx tracer (wood): wood samples N measurements via mass spectrometry
Access rights:
Private
Usage rights:
-
Published:
-
Abstract:
These data were complied related to the question: Is there evidence for lateral N-transport from leaf litter to dead wood? Wood slices of different species (Pinus massonina, Schima superba, Quercus serrata) placed at different divers 15N labeled leaf litter mixture layers (of tree differenzt species: Schima superba, Quercus acutissima, Sapindus mukorossi). Two different decomposition periods were observed. Afterwards the decomposed wood slices were analysed via mass spectrometry regarding to their total N content and their 15N content.
Design:
The 15N transport from leaf litter to dead wood of three different wood species were analysed. It was tested if there were differences in N transport related to decomposition period, wood species, diversity level of leaf mixtures and to the combination of wood species and leaf species.
Spatial extent:
Subtropical China, near site A, Xingangshan, Jiangxi
Temporal extent:
Wood slices were placed at 16./17.04.2012 in the field and were harvested at 16.07.2012 (after 3 months) and 07.10.2012 (after 6 months). The analysis of wood samples via mass spectrometer took place from March to June 2016.
Taxonomic extent:
Wood species: Pinus massoniana, Quercus serrata, Schima superba
Measurement cirumstances:
Are there circumstances that explain the precision of your measurements? Could it be that a sandstorm destroyed part of the plots in a given year?
Data analysis:
Parameters of interest were total N content (%) and 15N content (Δ vs. air) of wood samples. Both were analysed by mass spectrometry (Delta V Advantage, 0.7 mg sample in tin capsules 9x15mm)

Filter:
Dataset column

Name:
sample-ID
Definition:
sample-ID to identify a respective sample (e.g. for further use of the physical sample in a lab analysis). The first five digits show the laboratory number, the letter show the wood species (Pinus massonina (P), Quercus serrata (Q), Schima superba (S)) and the last digit shows the tree number.
Unit:
No information available
Datagroup:
Identifier
Keywords:
No information available
Values:
00008 P6
00004 P5
00010 P6
00002 P5
00006 P5
Contributors:
No information available

Dataset column

Name:
species
Definition:
species anes according to the Flora of China
Unit:
No information available
Datagroup:
Scientific plant species name
Keywords:
No information available
Values:
Quercus serrata
Pinus massoniana
Schima superba
Contributors:
wood species from which the sample has arisen category

Dataset column

Name:
tree
Definition:
Tree individual of which the sample has arisen (tree number 1-4 for Schima superba, tree number 5-6 for Pinus massoniana and tree number 7-10 for Quercus serrata).
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
Ind_4
Ind_2
Ind_3
Ind_1
Ind_10
Contributors:
tree individual of which the sample has originated (tree number 1-10) category

Dataset column

Name:
harvest
Definition:
t0: samples of wood slices which have never been exposed in the field (undecomposed samples) t1: samples which have been collected at the first sampling period (see respective date). t2: samples which have been collected at the first sampling period (see respective date).
Unit:
No information available
Datagroup:
time of decomposition
Keywords:
No information available
Values:
t1
t0
t2
Contributors:
point of time when the sample was taken out of testing field (t0, t1, t2) category

Dataset column

Name:
mesh
Definition:
c:samples of wood slices which were packed into coarse meshed bags (7mm mesh size) f:samples of wood slices which were packed into fine meshed bags (0.25 mm mesh size)
Unit:
No information available
Datagroup:
Treatment
Keywords:
No information available
Values:
f
c
Contributors:
gaze treatment - slices were packed in fine (025mm) or coarse (7mm) meshed gaze (f or c) category

Dataset column

Name:
block-plot
Definition:
Information on the position of the respective sample within the randomized design of the TracerNILEx. First digit indicates Blick, second digit indicates plot within the respective block
Unit:
No information available
Datagroup:
Tracer NILEx Plot
Keywords:
No information available
Values:
1-15
1-11
1-14
1-2
1-20
Contributors:
No information available

Dataset column

Name:
diversity
Definition:
1.0, leaf litter mixture containing one leaf species (monoculture) 2.0, leaf litter mixture containing two leaf species 3.0, leaf litter mixture containing three leaf species
Unit:
No information available
Datagroup:
Tracer NILEx Diversity
Keywords:
No information available
Values:
2
1
3
Contributors:
diversity of leaves species mixtures (1, 2 or 3 species in mixture) category

Dataset column

Name:
labeled
Definition:
Indicates, which of the leaf litter species in the mixture was labelled with 15N
Unit:
No information available
Datagroup:
TracerNILEx Treatment (15N Labeling)
Keywords:
No information available
Values:
Sch
Que
Sap
Contributors:
leaf species in mixture which is labeled by the heavy isotope 15N category

Dataset column

Name:
N
Definition:
Content of Nitrogen (total nitrogen) in the sample
Unit:
%
Datagroup:
Nitrogen
Keywords:
nitrogen, nutrients
Values:
0.0629889134033267
0.0596447512457592
0.060181150262763
0.0618670225575025
0.0567553411618887
Contributors:
No information available

Dataset column

Name:
15N
Definition:
Delta 15N of the respecitve sample (using natural 15N abundances in the air as reference)
Unit:
No information available
Datagroup:
Stable isotope
Keywords:
d15N
Values:
-0.0439263617546626
-0.090081569321886
-0.0384228473835548
-0.168744021389691
0.11534129151212
Contributors:
No information available

No information available


No information available
No information avialable

Filter:
54 pietsch medium

Katherina
Pietsch

Owner of:
16 Datasets

Involved in:
2 Projects

E-Mail Profile
14 wirth medium

Christian
Wirth

Owner of:
18 Datasets

Involved in:
6 Projects

E-Mail Profile
No information available

No information available
No information available

No information available
No information available