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Title:
Pilot experiment: sapling biomass of 4 tree species in 2009-2010
Access rights:
Private
Usage rights:
No information available
Published:
No information available
Abstract:
In order to develop species-specific allometric equations , the biomass of four species (species pool 1) used by SP5 were measured in parallel with our 15N labelling campaigns (summer and autum 2009, winter and spring 2010). The allometric equations will be used to link 15N uptake to indivual tree biomass. 20 individuals per species were harvested in each season and dry weight of leaves, aboveground woody parts (stem and twigs) and roots were measured.
Design:
Tree saplings of four species (Castanea henryi, Quercus serrata, Schima suberba and Elaeocarpus decipiens) were harvested in the Pilot Experiment on plots used by SP5. Harvesting was performed at the end of each 15N labelling campaing in four seasons: Summer 2009 (beginning of September), autum 2009 ( mid November), winter 2010 (beginning of March) and spring 2010 (mid May). In every season, 20 indivuals per species were harvested and stem diameter (at about 2 cm), height (uppermost leaf bud) and rooting depth were recorded. Roots, aboveground woody parts (stem and twigs) and leaves were cut, dried to constant mass and weighed. 10 of the 20 tree samplings per species were harvested in the monocultures and the other 10 in the four species mixtures. Sampling was distributed more or less equally among the four blocks of the experiment and plots were selected randomly. Only one indivual per monoculture was selected whereas in mixtures up to four sapling of different species were sampled in one plot. Exceptions from the random sampling have been done when mortality rate in the plot was high or the selected tree sapling was heavily damaged by herbivores or pathogens. In the mixtures, the central plant individuals were already harvested for 15N samples so that for biomass determination only marginal plants were available. Whereas in monocultures, plants were selected randomly from the centre and the edges. In spring 2010, young leaves (from 2010) and old leaves (from 2009 or older) were collected separately for the evergreen species.
Spatial extent:
Pilot Experiment, Xingangshan, China 29°06'29''N 117°55'28''
Temporal extent:
Four seasons: Summer 2009 (beginning of September), autum 2009 ( mid November), winter 2010 (beginning of March) and spring 2010 (mid May)
Taxonomic extent:
Castanea henryi, Quercus serrata, Schima suberba and Elaeocarpus decipiens
Measurement cirumstances:
No information available
Data analysis:
species-specific allometric equations

Filter:
Dataset column

Name:
Block
Definition:
Block number in the Pilot ExperimentBlock code in the pilot experiment
Unit:
No information available
Datagroup:
Block code in the pilot experiment
Keywords:
Pilot experiment, block, location
Values:
B3
B1
B2
B4
Contributors:
No information available

Dataset column

Name:
Div
Definition:
Diversity level; Taxonomic biodiversity;
Unit:
No information available
Datagroup:
Taxonomic biodiversity
Keywords:
biodiversity
Values:
Mix Pilot
Mono Pilot
Contributors:
No information available

Dataset column

Name:
Plot_old
Definition:
Plot number in the Pilot ExperimentWithin Block community code of the Pilot experiment
Unit:
No information available
Datagroup:
Helper
Keywords:
Pilot experiment, location
Values:
AA1
AA3
AA11
AA4
AA2
Contributors:
No information available

Dataset column

Name:
plot_id
Definition:
The community code combines the block number (numbers with _), plot tree community (as numbers) and the plot allocation to a subgroup (as letters)
Unit:
No information available
Datagroup:
BEF research plot name
Keywords:
Pilot experiment, location
Values:
pilot1AA01
pilot1AB11
pilot1AA11
pilot1AB03
pilot1AB04
Contributors:
No information available

Dataset column

Name:
Species
Definition:
sampled Species; Scientific plant species name;
Unit:
No information available
Datagroup:
Scientific plant species name
Keywords:
species, sapling
Values:
Schima superba
Quercus serrata
Elaeocarpus decipiens
Castanea henryi
Contributors:
No information available

Dataset column

Name:
Season
Definition:
Season in which the harvest was conducted
Unit:
No information available
Datagroup:
Season
Keywords:
season, harvest
Values:
summer
winter
spring
autumn
Contributors:
No information available

Dataset column

Name:
Year
Definition:
Year in which harvest was conducted
Unit:
No information available
Datagroup:
Date time information
Keywords:
season, harvest
Values:
2009
2010
Contributors:
No information available

Dataset column

Name:
Season_x_Year
Definition:
Combined information on season and year
Unit:
No information available
Datagroup:
Season
Keywords:
season, harvest
Values:
Win10
Aut09
Spr10
Sum09
Contributors:
No information available

Dataset column

Name:
BM_L
Definition:
Leaf biomass; Above-ground biomass measurement
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
biomass, leaf, biomass allocation
Values:
10.1
10.2
10
10.6
10.4
Contributors:
No information available

Dataset column

Name:
BM_LO
Definition:
Biomass of old leaves in evergreen species (Schima and Elaeocarpus); Above-ground biomass measurement
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
biomass, leaf
Values:
10.7
11.6
11.4
10.6
10.9
Contributors:
No information available

Dataset column

Name:
BM_S
Definition:
Woody aboveground biomass (stem and twigs)Above-ground biomass measurement
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
biomass, twig, stem, biomass allocation
Values:
10
10.08
10.1
10.3
10.2
Contributors:
No information available

Dataset column

Name:
BM_R
Definition:
Root biomass
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
biomass allocation, root, belowground biomass
Values:
10.21
10.25
10.66
10.1
10.6
Contributors:
No information available

Dataset column

Name:
BM_total
Definition:
Sum of sampled biomass components
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
biomass, tree, sapling
Values:
104.2
101.4
105.25
105.2
102.9
Contributors:
No information available

Dataset column

Name:
Dia
Definition:
stem diameter (at about 2 cm)Basal diameter
Unit:
cm
Datagroup:
Basal diameter
Keywords:
tree, basal diameter, size
Values:
0.5
0.4
0.45
0.55
0.35
Contributors:
No information available

Dataset column

Name:
Height
Definition:
Height; Plant height;
Unit:
cm
Datagroup:
Plant height
Keywords:
height, tree, size
Values:
103
104
102
100
105
Contributors:
No information available

Dataset column

Name:
Root_depth
Definition:
Rooting Depth
Unit:
cm
Datagroup:
Rooting depth
Keywords:
rooting depth, root
Values:
13
11
14
10
12
Contributors:
No information available

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5 scherer lorenzen medium

Michael
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Stefan
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