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Title:
CSP successional age estimates based on stem diameter distribution and tree ring width
Access rights:
Free for public
Usage rights:
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: Bruelheide, H., von Oheimb, G., Nadrowski, K. and Baruffol, M. (2013): CSP successional age estimates based on stem diameter distribution and tree ring width. BEF-China data portal (Accessed through URL http://china.befdata.biow.uni-leipzig.de/datasets/197)
Published:
No information available
Abstract:
Comparative Study Plots of the BEF-China experiment were selected according to a gradient of successional age and a crossed gradient of tree diversity. This file describes measures of stem diameter distribution from the CSPs, as well as basal area measures, which can give quantitative insight into the structure of the plots at different successional ages as defined by Mr. Fang. Use the column max_5 for plot age.
Design:
CSPs were selected according to a successional age and a diversity gradient. There are 27 CSPs. Within each CSP, trees were sampled in a hierarchical design. Plot size is 30x30m, but the center 10x10m subplot was sampled in higher intensity than the other plots. In the outer plots, trees from 10cm diameter at breastheight were sampled, in the center trees and shrubs from 3cm on. We thus used 9* the data from small trees (<10cm) in the central subplot to reach plot scale. We additionally had to estimate the diameter at breastheight of some small trees which were only measured at the base, this is mentioned in more detaill in the methods. We additionally included the stems affected by the snowbreak to derive the conditions of the plots just before the snowbreak in Winter 2008.
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 and was initially established as a National Forest Reserve in 1975 and became a National Nature Reserve in 2001. The NNR comprises a large portion of broad-leaved forests of advanced successional stages (Hu & Yu 2008), which have not been managed since the beginning of the 1990ies, as well as young successional stages and conifer plantations, mainly of Cunninghamia lanceolata and Pinus massoniana. --- The vegetation is composed of different types of subtropical evergreen and mixed broad-leaved forests (Yu et al. 2001). Most of the stands are secondary forests, evidenced by maximum tree ages of 180 years, by agricultural terraces in almost all plots and by the presence of charcoal in almost all soil profiles. Around the Gutianshan NRR extensive deforestation has occurred during the Great Leap Forward in the 1950s, as in most parts of Southeast China. However, due to prevailing steep slopes, the Gutianshan area was only marginally usable for agricultural activities, and thus an exceptionally intact forest cover has been preserved. --- The climate at Gutianshan NNR is warm and temperate with a short dry season in November and December and with warm summers (Fig. 2). The climatic conditions are characteristic for the subtropics with an annual average temperature of 15.1°C, January minimum temperatures of -6.8°C, July maximum temperatures of 38.1°C and an accumulated temperature sum (≥ 5°C) of 5221.5 degree days.
Temporal extent:
data is the dbh data collected in 2008
Taxonomic extent:
The data aggregates stem diameters of tree and shrub species in the CSPs.
Measurement cirumstances:
No information available
Data analysis:
Use the column max_5 for plot age. This dataset collects numerous parameters that describe the stem diameter distribution of the CSPs. All of them can be used as characteristics of the CSPs.

Filter:
Dataset column

Name:
CSP
Definition:
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.
Unit:
No information available
Datagroup:
BEF research plot name
Keywords:
CSP
Values:
CSP03
CSP02
CSP01
CSP05
CSP04
Contributors:
No information available

Dataset column

Name:
min
Definition:
minimum stem diameter; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
2.307070259
2.310292415
2.304968363
1.181342814
2.309712675
Contributors:
No information available

Dataset column

Name:
qu25
Definition:
25 % quantile of stem diameters; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
2.625937425
2.554817365
2.4390301895
2.999192615
2.844246507
Contributors:
No information available

Dataset column

Name:
med
Definition:
median stem diameter; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
10.25
12.64
11.72
3.15
12.085
Contributors:
No information available

Dataset column

Name:
qu75
Definition:
75 % stem diameter; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
13.015
11.625
13.71421906
15.415
15
Contributors:
No information available

Dataset column

Name:
max
Definition:
maximum stem diameterSuccessional age of a forest plot
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
23.22
24.24
17.5
24.3
21.18
Contributors:
No information available

Dataset column

Name:
CSPageF
Definition:
concatenation of the CSP name and successional stage as defined by Mr. Fang at the time of plot selectionHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1_CSP22
1_CSP19
1_CSP24
1_CSP16
1_CSP20
Contributors:
No information available

Dataset column

Name:
ageF
Definition:
successional stage as defined by Mr. Fang at the time of plot selectionSuccessional age of a forest plot
Unit:
No information available
Datagroup:
Successional age of a forest plot
Keywords:
succession, successional age
Values:
2
5
1
3
4
Contributors:
No information available

Dataset column

Name:
mean
Definition:
mean stem diameter
Unit:
centimeter
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
11.1454731125955
10.591000911125
12.7357512107
11.4360259586356
10.3147972531535
Contributors:
No information available

Dataset column

Name:
interqur
Definition:
interquartile range of stem diametersStem diameter distribution
Unit:
centimeter
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
10.5759698105
11.205387226
11.435
10.61421906
1.095182635
Contributors:
No information available

Dataset column

Name:
skew
Definition:
skewness of the stem diameter distributionStem diameter distribution
Unit:
No information available
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0.636818515617448
1.10022812949078
1.08926293604376
0.816770673697502
0.925943518294786
Contributors:
No information available

Dataset column

Name:
kurt
Definition:
kurtosis of the stem diameter distributionStem diameter distribution
Unit:
No information available
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
12.2741342197205
10.417355980841
13.4629093791015
10.7456629160998
10.1345068989199
Contributors:
No information available

Dataset column

Name:
var
Definition:
variance of the stem diameter distributionStem diameter distribution
Unit:
centimeter squared
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
101.207249844238
115.791210409187
11.2729293152508
10.0397870228694
101.390759996732
Contributors:
No information available

Dataset column

Name:
sd
Definition:
standard deviation of the stem diameter distributionStem diameter distribution
Unit:
centimeter
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
11.1177732332656
10.9467997397343
10.069297889959
10.0601814021537
10.7606324353723
Contributors:
No information available

Dataset column

Name:
CV
Definition:
Coefficient of variation of the stem diameter distributionStem diameter distribution
Unit:
percent
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0.558677436511016
0.58121712805497
0.549984940160768
0.621059144393701
0.581256816342811
Contributors:
No information available

Dataset column

Name:
aF1
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageF: 1st age classHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1
0
Contributors:
No information available

Dataset column

Name:
aF2
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageF: 2nd age classHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
0
1
Contributors:
No information available

Dataset column

Name:
aF3
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageF: 3rd age classHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
0
1
Contributors:
No information available

Dataset column

Name:
aF4
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageF: 4th age classHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
0
1
Contributors:
No information available

Dataset column

Name:
aF5
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageF: 4th age classHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1
0
Contributors:
No information available

Dataset column

Name:
CSPageD
Definition:
concatenation of the CSP name and successional stage as defined by G. von OheimbHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1_CSP22
1_CSP16
1_CSP17
1_CSP20
1_CSP19
Contributors:
No information available

Dataset column

Name:
ageD
Definition:
successional stage as defined by G. von Oheimb based on stem diameter distribution and information provided by Mr. FangSuccessional age of a forest plot
Unit:
No information available
Datagroup:
Successional age of a forest plot
Keywords:
successional age
Values:
3
2to5
2
1
3to5
Contributors:
No information available

Dataset column

Name:
aD1
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageD: 1st age classHelper
Unit:
logical
Datagroup:
Helper
Keywords:
No information available
Values:
0
1
Contributors:
No information available

Dataset column

Name:
aD2
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageD: 2nd age classHelper
Unit:
logical
Datagroup:
Helper
Keywords:
No information available
Values:
1
0
Contributors:
No information available

Dataset column

Name:
aD3
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageD: 3rd age classHelper
Unit:
logical
Datagroup:
Helper
Keywords:
No information available
Values:
1
0
Contributors:
No information available

Dataset column

Name:
aD4
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageD: 4th age classHelper
Unit:
logical
Datagroup:
Helper
Keywords:
No information available
Values:
1
0
Contributors:
No information available

Dataset column

Name:
aD5
Definition:
indicating, whether the plot belongs to a specific successional age class as defined in ageD: 5th age classHelper
Unit:
logical
Datagroup:
Helper
Keywords:
No information available
Values:
1
0
Contributors:
No information available

Dataset column

Name:
to5
Definition:
percent of stems having a diameter between 3 and 5 cmStem diameter distribution
Unit:
percent
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0.348387096774194
0.318897637795276
0.152542372881356
0.3375
0.321428571428571
Contributors:
No information available

Dataset column

Name:
to10
Definition:
percent of stems having a diameter between 5 and 10 cmStem diameter distribution
Unit:
percent
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0.0805084745762712
0.153333333333333
0.135
0
0.064516129032258
Contributors:
No information available

Dataset column

Name:
to20
Definition:
percent of stems having a diameter between 10 and 20 cmStem diameter distribution
Unit:
percent
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0.0543478260869565
0.0366666666666667
0.0695876288659794
0.0261569416498994
0.0212765957446809
Contributors:
No information available

Dataset column

Name:
to30
Definition:
percent of stems having a diameter between 30 and 60 cmStem diameter distribution
Unit:
percent
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0.003584229390681
0
0.00804828973843058
0.00588235294117647
0.00531914893617021
Contributors:
No information available

Dataset column

Name:
to60
Definition:
percent of stems having a diameter between 30 and 60 cmStem diameter distribution
Unit:
percent
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0.00337837837837838
0.00298953662182362
0
0.00603621730382294
0.00254777070063694
Contributors:
No information available

Dataset column

Name:
to80
Definition:
percent of stems having a diameter larger than 60 (maximum was below 80)Stem diameter distribution
Unit:
percent
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0
0.0169491525423729
0.00446428571428571
0.0176470588235294
0.00625
Contributors:
No information available

Dataset column

Name:
wbshape
Definition:
Weibull distribution shape parameter based on stem diametersStem diameter distribution
Unit:
No information available
Datagroup:
Stem diameter distribution
Keywords:
Weibull distribution, dbh
Values:
1.1892131402958
1.15491133575686
1.17963452588576
1.15895630811896
1.02703039555973
Contributors:
No information available

Dataset column

Name:
wbscale
Definition:
Weibull distribution scale parameter based on stem diametersStem diameter distribution
Unit:
No information available
Datagroup:
Stem diameter distribution
Keywords:
Weibull distribution, dbh
Values:
11.7670013768136
12.2139578455232
13.8071437226491
11.9736757523177
11.4449650948459
Contributors:
No information available

Dataset column

Name:
wbshapesd
Definition:
standard deviation of the Weibull distribution shape parameter based on stem diametersStem diameter distribution
Unit:
No information available
Datagroup:
Stem diameter distribution
Keywords:
Weibull distribution, dbh
Values:
0.044545907671126
0.0406604069044947
0.0414044796459589
0.0401074884847356
0.0393968746205962
Contributors:
No information available

Dataset column

Name:
wbscalesd
Definition:
standard deviation of the Weibull distribution scale parameter based on stem diametersStem diameter distribution
Unit:
No information available
Datagroup:
Stem diameter distribution
Keywords:
Weibull distribution, dbh
Values:
0.157997863562333
0.106912168500411
0.146706291146481
0.138390287866473
0.143871830892903
Contributors:
No information available

Dataset column

Name:
age_HB
Definition:
successional age of the CSP, by Helge BruelheideSuccessional age of a forest plot
Unit:
No information available
Datagroup:
Successional age of a forest plot
Keywords:
successional age
Values:
3
1
2
4
5
Contributors:
No information available

Dataset column

Name:
CSPageHB
Definition:
concatenating CSP identity with age estimate by HBHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
1_CSP16
1_CSP26
1_CSP20
1_CSP19
1_CSP22
Contributors:
No information available

Dataset column

Name:
dbh_10
Definition:
number of trees larger than 10cm in dbh, based on stems larger than 10 cm found 2008 in the CSPsStem diameter distribution
Unit:
count
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
107
20
11
25
12
Contributors:
No information available

Dataset column

Name:
dbh_15
Definition:
number of trees larger than 10cm in dbh, based on stems larger than 15 cm found 2008 in the CSPsStem diameter distribution
Unit:
count
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
15
16
17
13
19
Contributors:
No information available

Dataset column

Name:
dbh_20
Definition:
number of trees larger than 10cm in dbh, based on stems larger than 20 cm found 2008 in the CSPsStem diameter distribution
Unit:
count
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0
16
2
11
13
Contributors:
No information available

Dataset column

Name:
dbh_25
Definition:
number of trees larger than 10cm in dbh, based on stems larger than 25 cm found 2008 in the CSPsStem diameter distribution
Unit:
count
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
10
13
1
11
0
Contributors:
No information available

Dataset column

Name:
dbh_30
Definition:
number of trees larger than 10cm in dbh, based on stems larger than 30 cm found 2008 in the CSPsStem diameter distribution
Unit:
count
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
0
1
12
10
11
Contributors:
No information available

Dataset column

Name:
dbh_35
Definition:
number of trees larger than 10cm in dbh, based on stems larger than 35 cm found 2008 in the CSPsStem diameter distribution
Unit:
count
Datagroup:
Stem diameter distribution
Keywords:
dbh
Values:
10
0
1
18
11
Contributors:
No information available

Dataset column

Name:
age_HB_comments
Definition:
comments by Helge Bruelheide on his age classificationof the CSPsHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
18 trees with dbh>25 cm
16 trees with dbh>20 cm
14 trees with dbh>30cm
19 trees with dbh>25 cm
19 trees with dbh>15 cm
Contributors:
No information available

Dataset column

Name:
max_1
Definition:
dbh of the largest tree in a CSP; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
24.24
24.3
17.5
21.18
23.22
Contributors:
No information available

Dataset column

Name:
max_2
Definition:
dbh of the 2nd largest tree in a CSP; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
21.75
17.1
20.54
21.4
23.82
Contributors:
No information available

Dataset column

Name:
max_3
Definition:
dbh of the 3rd largest tree in a CSP; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
20.51
19.84
20.54
16.27
18.66
Contributors:
No information available

Dataset column

Name:
max_4
Definition:
max_4; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
20
19.17
12.74
19.49
17.64
Contributors:
No information available

Dataset column

Name:
max_5
Definition:
max_5; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
13.54
16.88
12.32
18.73
17.74
Contributors:
No information available

Dataset column

Name:
max_6
Definition:
max_6; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
12.2
17.07
13.54
17.52
16.21
Contributors:
No information available

Dataset column

Name:
max_7
Definition:
max_7; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
15.76
17.32
11.85
11.46
16.91
Contributors:
No information available

Dataset column

Name:
max_8
Definition:
max_8; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
16.72
11.15
10.99
15.13
17.01
Contributors:
No information available

Dataset column

Name:
max_9
Definition:
max_9; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
10.51
14.3
15.48
11.02
16.34
Contributors:
No information available

Dataset column

Name:
max_10
Definition:
max_10; Diameter at breast height;
Unit:
centimeter
Datagroup:
Diameter at breast height
Keywords:
dbh
Values:
10.71
10.25
14.65
14.08
16.31
Contributors:
No information available

Dataset column

Name:
tree_age_max5
Definition:
correlated age of the 5th largest tree, based on stem cores taken in the CSPs; taken as estimate for the plot successional ageSuccessional age of a forest plot
Unit:
year
Datagroup:
Successional age of a forest plot
Keywords:
tree age, successional age
Values:
106.200269215238
115.542037959348
105.769524835106
21.7205276618657
101.300551891237
Contributors:
No information available

Dataset column

Name:
Distr_GvOheimb_comments
Definition:
comments by Goddert von Oheimb to the age classification by him and by Mr. FangHelper
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
clear
belongs to 5
clear, relatively many in 15cm class (12-17cm)
could fit into 1
belongs to 3
Contributors:
No information available

Dataset column

Name:
ageFang2008
Definition:
successional age in years as provided by Mr. FangSuccessional age of a forest plot
Unit:
No information available
Datagroup:
Successional age of a forest plot
Keywords:
successional age
Values:
2008 - (15)
2008 - (100)
2008 - (12-15)
1998
2008 - (12)
Contributors:

Dataset column

Name:
MrFang
Definition:
information on land use history and successional age of the Comparative study plot
Unit:
No information available
Datagroup:
Land use
Keywords:
successional age, land use history
Values:
30 years ago selective cutting, some old trees remained
40 years, ridge, slow growing
40 years ago logged, then free succession
40-50 years ago cut, then Cunninghamia planted, cut again, succession
About 100 years old, natural fire, no cutting.
Contributors:

No information available


No information available
No information avialable

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8 bruelheide medium

Helge
Bruelheide

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Goddert
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