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Title:
CSPs: Tree species Carbon (C) and Nitrogen (N) Concentration (Root, Stem, Twig, Leaf) of 8 target species in the CSPs
Access rights:
Private
Usage rights:
No information available
Published:
No information available
Abstract:
Leaf, twig, stem and root samples were taken from eight “target” species (four trees, two deciduous: Castanea henryi, Quercus serrata and two evergreen: Castanopsis eyrei, Schima superba; four shrubs, one deciduous: Rhododendron simsii and three evergreen: Loropetalum chinense, Camellia fraterna, Eurya muricata) in autumn 2008. Furthermore, leaf samples from the target species were collected in spring 2009, summer 2009 and winter 2010 to detect seasonal variation in N concentration. Species were sampled in all CSPs where they were present. For the seasonal patterns, always the same tree individuals were sampled. Total C+N pools in tree and shrub biomass will further be calculated based on the C+N concentration measurements.
Design:
Leaf samples were taken with telescope pruning shears (lenght: up to 6.5m) from the lower outer and preferentially sun exposed canopy when possible. Leaves of shrub species were sampled in upper canopy. One year old twigs, and roots which a diameter between 1 and 3mm were taken for C and N analysis. All samples were dried at 70°C, ground and analyzed for C and N using an elemantal analyzer available at Peking University (Prof. Jin-Sheng He).
Spatial extent:
CSPs of the BEF China Experiment, Gutianshan Nature Reserve 29°08'-29°17'N 118°02'-118°11'E
Temporal extent:
2008 to 2010
Taxonomic extent:
Castanea henryi, Quercus serrata and two evergreen: Castanopsis eyrei, Schima superba; four shrubs, one deciduous: Rhododendron simsii and three evergreen: Loropetalum chinense, Camellia fraterna, Eurya muricata
Measurement cirumstances:
No information available
Data analysis:
No leaf samples were collected for Castanea henryi and Quercus serrata in winter 2010 since these species are deciduous. Rhododendron simsii can be classified as semi-deciduous because it sheds the big leaves in autumn but keeps small ones the whole winter which were also sampled.

Filter:
Dataset column

Name:
Number_ST
Definition:
Sample NumberHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1
1001
10
100
1000
Contributors:
No information available

Dataset column

Name:
Species
Definition:
Species name; ;
Unit:
No information available
Datagroup:
Scientific plant species name
Keywords:
species
Values:
Castanopsis eyrei
Eurya muricata
Camellia fraterna
Castanea henryi
Loropetalum chinense
Contributors:
No information available

Dataset column

Name:
Date
Definition:
Sampling dateDate time information
Unit:
No information available
Datagroup:
Date time information
Keywords:
date
Values:
2008-10-12
2008-03-30
2008-10-14
2008-04-30
2008-10-15
Contributors:
No information available

Dataset column

Name:
Organ
Definition:
Sampled plant partPlant organ sampled
Unit:
No information available
Datagroup:
Plant organ sampled
Keywords:
twig, leaf, stem, root, plant organ
Values:
T
Leaf
R
S
Contributors:
No information available

Dataset column

Name:
ID
Definition:
Identification number of the individualCSP tree tag number
Unit:
No information available
Datagroup:
CSP metal tag number (trees, woody debris)
Keywords:
tree individual
Values:
1311081
0911082
0911081
1911081
1111081
Contributors:
No information available

Dataset column

Name:
CSP
Definition:
name of the CSP in the Nature ReserveBEF research plot name Reasearch 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.
Unit:
No information available
Datagroup:
BEF research plot name
Keywords:
CSP
Values:
CSP02
CSP01
CSP04
CSP03
CSP05
Contributors:
No information available

Dataset column

Name:
Age_3
Definition:
Age class, classification system using three classes, defined in the CSP age fileHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
succession
Values:
3
1
2
Contributors:
No information available

Dataset column

Name:
Age_5
Definition:
Age class, classification system using five classes, defined in the CSP age fileHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
2
1
5
4
3
Contributors:
No information available

Dataset column

Name:
Season
Definition:
Season; Autumn 2008: Samples were taken between 23.10.- 22.11. Spring 2009: Samples were taken between 30.03. - 10.05. Summer 2009: Samples were taken between 26.07.-09.08. Winter 2010: Samples were taken between 08.02.-20.02.
Unit:
No information available
Datagroup:
Season
Keywords:
season
Values:
Spr09
Win10
Sum09
Aut08
Contributors:
No information available

Dataset column

Name:
Carbon
Definition:
Carbon concentration; ; Elemental Analyzer
Unit:
percent
Datagroup:
Carbon
Keywords:
carbon
Values:
41.59
42.74
40.99
42.54
42.67
Contributors:
No information available

Dataset column

Name:
Hydrogen
Definition:
Hydrogen concentration
Unit:
percent
Datagroup:
Chemical elements
Keywords:
hydrogen
Values:
5.79
5.8
5.84
5.83
5.82
Contributors:
No information available

Dataset column

Name:
Nitrogen
Definition:
Nitrogen concentration
Unit:
percent
Datagroup:
Nitrogen
Keywords:
nitrogen
Values:
0.05
0.08
0.06
0.09
0.07
Contributors:
No information available

Dataset column

Name:
CN_ratio
Definition:
CN-Ratio
Unit:
ratio
Datagroup:
Carbon Nitrogen ratio
Keywords:
C/N ratio
Values:
100.06122448979592
100.52
101.25
100.125
100.76086956521739
Contributors:
No information available

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5 scherer lorenzen medium

Michael
Scherer-Lorenzen

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Stefan
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