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Title:
Tree and shrub species functional traits in Dujiangyan
Access rights:
Private
Usage rights:
No information available
Published:
No information available
Abstract:
We studied the three leaf traits leaf half-life (LHL), leaf mass per area (LMA) and nitrogen concentration in green leaves (Ngreen) and the wood trait wood density (WD) in 295 individuals belonging to 45 tree or shrub species in a Chinese subtropical forest from September 2006 to January 2009. Using multilevel ANOVA and decomposition of sums of products, we estimated the amount of trait variation and covariation among taxa, functional types (deciduous vs. evergreen), growth forms (trees vs. shrubs), individuals and seasons. We also examined phylogenetic signal and, using phylogenetically independent contrasts, the evolutionary coordination of these traits.
Design:
(1) We extracted one soil core (10 cm deep, 3 cm diameter) beneath 132 individual plants from 12 deciduous and 24 evergreen species in August 2009. Soil samples were oven-dried, ground and analyzed for total N concentration and organic matter concentration.(2) wood density were collected both in September 2006 and April 2007 to determine seasonal change in wood density (WD). We used an increment borer (diameter 5.15 mm, Haglöf, Sweden) to obtain a 5 cm long core (without bark) and measured the fresh volume with a water-displacement method immediately after sampling the core in order to maintain the samples at a constant humidity. The cores were then dried at 60 °C for 72 h and weighed. Wood density was calculated as wood dry mass divided by fresh volume.(3) In September 2006, we randomly selected 3–6 individuals from each species and marked them with aluminum tags. We collected 5–8 fully expanded leaves from the middle of the leaf crown of each individual. For tall trees in which the middle of the crown could not be reached, leaves were collected from the bottom of the crown. Only current-season, fully expanded leaves at the edge of the crown were included in each sample. We used a LI-3100C Area Meter (LI-COR company, Lincoln, NE, USA) to determine the cumulative area of each sample of green leaves excluding petioles. The samples were dried at 60 °C for 72 h and weighed. Leaf mass per area (LMA) was calculated as the ratio between leaf dry mass and leaf area. Total nitrogen content (% dry mass, Ngreen) of leaves was determined with a CHN analyzer (Leco CHNS–932, Leco instruments, St. Joseph, MI, USA).In order to determine seasonal changes in traits, we repeated the sampling and measurements in April 2007.(4) Leaf half-life (LHL) was determined demographically by following the fate of marked leaf cohorts. In April 2007, we selected one or two healthy sunlit branches per individual, marked a terminal section with 5−20 young leaves (occasionally more than 20 leaves for deciduous trees) with colored thread and counted the number of leaves between the marks. We sequentially revisited these branches in August 2007, March 2008, August 2008 and January 2009, added an additional mark at the tip of each branch and counted the living leaves in each of the marked cohorts. Side branches that started growing during the examination period were not taken into account.
Spatial extent:
The study was conducted in a secondary broad-leaved and coniferous mixed subtropical forest in Dujiangyan, Sichuan province, SW China. With the rising slopes of the Qinghai-Tibet plateau to the west and the fertile agricultural plains of the Sichuan basin to the east, the Dujiangyan area is one of eleven biodiversity hotspots in China (Chen, 2000). The climatic conditions are typically subtropical with a dry winter (November–April) and a warm and rainy summer (May–October). The annual average temperature is 15.2 °C and July average temperature is 25 °C. The mean annual precipitation is 1341 mm and the annual average relative humidity is above 80 % (Chen, 2000).The study site covers approximately 22 ha (31°03’43”–31°04’03” N, 103°42’55”–103°43’52” E), within an altitude range of 693–830 m. Previous vegetation survey shows there are 158 species of broad-leaved evergreen, deciduous and coniferous trees and shrubs coexist in the forest (Du, unpublished data). The canopy is dominated by Castanopsis fargesii, Betula luminifera, Quercus serrata and Quercus variabilis. Species nomenclature follows “Flora of China” (ECCAS, 1974-1999). Camellia oleifera and Eurya alata are the most abundant shrub species. The dominant soil types are Leptosols, Regosols and Cambisols from loess-like material, with an average nitrogen concentration of 0.29 % and organic matter concentration of 8.56 %.
Temporal extent:
September 2006 to January 2009.
Taxonomic extent:
We selected 295 individuals that belong to 45 woody angiosperm species representing 19 families, which were commonly found in the forest community. They were classified by functional type: deciduous (20 species) and evergreen (25 species) and by growth form: trees (34 species) and shrubs (11 species).
Measurement cirumstances:
No information available
Data analysis:
No information available

Filter:
Dataset column

Name:
no
Definition:
serial number of individuum in Dujiangyan; Datagroup description: Individual Identifier
Unit:
No information available
Datagroup:
Helper
Keywords:
object
Values:
1
101
100
10
102
Contributors:
No information available

Dataset column

Name:
cens
Definition:
consecutive number of the respective census
Unit:
No information available
Datagroup:
Time series
Keywords:
date
Values:
1
2
3
Contributors:
No information available

Dataset column

Name:
tag
Definition:
tag number; Datagroup description: Individual Identifier
Unit:
No information available
Datagroup:
Dujiangyan Individual Identifier
Keywords:
object
Values:
321380
100000
330966
330975
331508
Contributors:
No information available

Dataset column

Name:
date
Definition:
date
Unit:
No information available
Datagroup:
Date time information
Keywords:
date
Values:
2006-09-21
2006-09-25
2006-09-24
2006-09-20
2006-09-22
Contributors:
No information available

Dataset column

Name:
long
Definition:
longitude of GPS location
Unit:
No information available
Datagroup:
Longitude
Keywords:
location
Values:
103.7153916
103.7153163
103.7151468
103.7150766
103.7150413
Contributors:
No information available

Dataset column

Name:
lat
Definition:
latitude of GPS location
Unit:
No information available
Datagroup:
Latitude
Keywords:
location
Values:
31.04479112
31.0447485
31.04478464
31.04480386
31.04480712
Contributors:
No information available

Dataset column

Name:
interval
Definition:
days between two sequential census
Unit:
day
Datagroup:
Duration
Keywords:
time
Values:
14
13
1
11
10
Contributors:
No information available

Dataset column

Name:
fam
Definition:
family
Unit:
No information available
Datagroup:
Plant family name
Keywords:
plant family, Taxonomic family of species, taxonomy
Values:
Anacardiaceae
Ebenaceae
Cornaceae
Aquifoliaceae
Araliaceae
Contributors:
No information available

Dataset column

Name:
gen
Definition:
genus; Source: Flora of China, Helge Bruelheide (derived from datagroup) (derived from datagroup)
Unit:
No information available
Datagroup:
Plant genus name
Keywords:
Taxonomic genus of species, taxonomy
Values:
Castanopsis
Celtis
Camellia
Aralia
Betula
Contributors:
No information available

Dataset column

Name:
spec
Definition:
species; Datagroup description: The scientific species fullnames are based on the "Flora of China" identified by Teng Fang and verified by Helge Bruelheide (trees) and Alexandra Efmeier (herbs). Scientific species names consist of epithet and genus. For identification, the Author name and the year of the publications of the description are required.; Source: Flora of China, Helge Bruelheide (derived from datagroup) (derived from datagroup)
Unit:
No information available
Datagroup:
Scientific plant species name
Keywords:
species, taxon
Values:
Aralia chinensis
Betula luminifera
Camellia oleifera
Castanopsis fargesii
Castanopsis carlesii
Contributors:
No information available

Dataset column

Name:
ed
Definition:
evergreen or deciduous; Datagroup description: Leaf habit
Unit:
No information available
Datagroup:
Plant functional group or life form
Keywords:
explanatory, functional trait
Values:
d
e
Contributors:
No information available

Dataset column

Name:
gf
Definition:
growth form
Unit:
No information available
Datagroup:
Plant functional group or life form
Keywords:
explanatory, functional trait
Values:
smalltree
s
t
Contributors:
No information available

Dataset column

Name:
Organic
Definition:
organic matter in the soil
Unit:
g/kg
Datagroup:
Soil organic matter
Keywords:
explanatory, soil organic matter
Values:
106.9340365
107.1951426
110.6272863
109.1101082
104.4676985
Contributors:
No information available

Dataset column

Name:
Nsoil
Definition:
soil nitrogen content
Unit:
g/kg
Datagroup:
Nitrogen
Keywords:
explanatory
Values:
0.8
0.85
1.06
0.93
0.84
Contributors:
No information available

Dataset column

Name:
halflife
Definition:
leaf half life
Unit:
day
Datagroup:
Leaf half life
Keywords:
response variable, leaf
Values:
1043.7
1005
1044.6
105
1024
Contributors:
No information available

Dataset column

Name:
caconc
Definition:
carbon centration in alive leaves
Unit:
%
Datagroup:
Carbon
Keywords:
response variable
Values:
35.58
37.33
37.04
37.29
36.72
Contributors:
No information available

Dataset column

Name:
haconc
Definition:
hydrogen centration in alive leaves
Unit:
%
Datagroup:
Chemical elements
Keywords:
response variable
Values:
5.201
4.964
5.208
5.289
5.341
Contributors:
No information available

Dataset column

Name:
naconc
Definition:
Nitrogen centration in alive leaves; Instrumentation: CHN analyzer (Leco CHNS–932, Leco instruments, St. Joseph, MI, USA)
Unit:
%
Datagroup:
Nitrogen
Keywords:
response variable
Values:
0.859
0.864
0.805
0.809
0.825
Contributors:
No information available

Dataset column

Name:
csconc
Definition:
carbon centration in senesced leaves
Unit:
%
Datagroup:
Carbon
Keywords:
response variable
Values:
33.43
35.8
33.77
35.28
34.52
Contributors:
No information available

Dataset column

Name:
hsconc
Definition:
Hydrogen centration in senesced leaves
Unit:
%
Datagroup:
Chemical elements
Keywords:
response variable
Values:
5.06
4.963
4.783
5.102
4.982
Contributors:
No information available

Dataset column

Name:
nsconc
Definition:
nitrogen centration in senesced leaves
Unit:
%
Datagroup:
Nitrogen
Keywords:
response variable
Values:
0.528
0.574
0.615
0.584
0.566
Contributors:
No information available

Dataset column

Name:
larea
Definition:
leaf area; Instrumentation: LI-3100C Area Meter (LI-COR company, Lincoln, NE, USA) (derived from datagroup)
Unit:
cm2
Datagroup:
Leaf area
Keywords:
response variable
Values:
100.206
100.16
101.279
101.621
101.18
Contributors:
No information available

Dataset column

Name:
h
Definition:
plant height
Unit:
m
Datagroup:
Plant height
Keywords:
response variable
Values:
1
0.8
10.1
0.6
10
Contributors:
No information available

Dataset column

Name:
dia
Definition:
diameter at 1 m height
Unit:
cm2
Datagroup:
Basal diameter
Keywords:
response variable
Values:
0.3
0.7
0.6
0.5
0.2
Contributors:
No information available

Dataset column

Name:
cdiam
Definition:
crown diameter
Unit:
m
Datagroup:
Crown architecture
Keywords:
response variable
Values:
0.4
1
0.5
10
0.8
Contributors:
No information available

Dataset column

Name:
ctrans
Definition:
crown transparency
Unit:
%
Datagroup:
Crown architecture
Keywords:
response variable
Values:
10
30
20
15
25
Contributors:
No information available

Dataset column

Name:
shv
Definition:
shoot volume
Unit:
cm3
Datagroup:
Volume of an object
Keywords:
No information available
Values:
10
0.6
0.7
1.1
1
Contributors:
No information available

Dataset column

Name:
shm
Definition:
shoot biomass
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
response variable, aboveground biomass
Values:
0.828
0.574
1.236
1.088
0.56
Contributors:
No information available

Dataset column

Name:
bthick
Definition:
bark thickness
Unit:
mm
Datagroup:
Bark thickness
Keywords:
response variable
Values:
0.4
0.5
0.1
0.2
0.3
Contributors:
No information available

Dataset column

Name:
wvol
Definition:
wood volume
Unit:
cm3
Datagroup:
Volume of an object
Keywords:
No information available
Values:
0.2083
0.21
0.2
0.17
0.25
Contributors:
No information available

Dataset column

Name:
wm
Definition:
wood dry mass
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
response variable, wood, aboveground biomass
Values:
0.133
0.1234
0.1387
0.117
0.142
Contributors:
No information available

Dataset column

Name:
wwm
Definition:
wood fresh mass
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
No information available
Values:
0.3863
0.355
0.1917
0.207
0.288
Contributors:
No information available

Dataset column

Name:
lleng
Definition:
leaf length
Unit:
cm
Datagroup:
Leaf architecture
Keywords:
response variable
Values:
10.4
10.5
10.8
10
10.3
Contributors:
No information available

Dataset column

Name:
lwid
Definition:
leaf width
Unit:
cm
Datagroup:
Leaf architecture
Keywords:
response variable
Values:
0.8
13.3
10.5
10.3
13.9
Contributors:
No information available

Dataset column

Name:
ldm
Definition:
leaf dry mass
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
response variable, leaf, aboveground biomass
Values:
0.1705
0.1862
0.0706
0.1376
0.1424
Contributors:
No information available

Dataset column

Name:
lwm
Definition:
leaf wet mass
Unit:
g
Datagroup:
Above and below ground biomass measurement
Keywords:
No information available
Values:
0.877
1.137
1.37
1.304
0.805
Contributors:
No information available

Dataset column

Name:
damage
Definition:
Number of damaged leaves; Instrumentation: my eyes (derived from datagroup); Source: BACCARA herbivory record of 2009 (derived from datagroup)
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
10
1
11
12
0
Contributors:
No information available

Dataset column

Name:
lno
Definition:
total number of censored leaves; Instrumentation: my eyes (derived from datagroup); Source: BACCARA herbivory record of 2009 (derived from datagroup)
Unit:
No information available
Datagroup:
Sample size
Keywords:
No information available
Values:
11
0
13
10
12
Contributors:
No information available

Dataset column

Name:
dperc
Definition:
damage percentage; Instrumentation: my eyes (derived from datagroup); Source: BACCARA herbivory record of 2009 (derived from datagroup)
Unit:
%
Datagroup:
Herbivore damage
Keywords:
response variable
Values:
15
10
12
1
0
Contributors:
No information available

No information available


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Attachment:

File name:
adult_data_workbook_original_from_Chinese_portal.xls
Description:
file as downloaded from the Chinese portal
Uri:
No information available
Is essential:
No information available
Content type:
application/vnd.ms-excel
File size:
437 KB
Created at:
2013-09-18
Updated at:
2013-09-18

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15 schmid medium

Bernhard
Schmid

Owner of:
29 Datasets

Involved in:
2 Projects

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125 li medium

Xuefei
Li

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4 Datasets

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0 Projects

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