CSPs: Soil phosphorus neighbourhood effects: soil P fraction, pH, C/N in CSP 13, 14, 27

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Dataset Abstract

Soil phosphorous and pH in three-tree groups in the Comparative Study sites.
29°08'-29°17'N
118°02'-118°11'E

Dataset Design

Three trees are used as minimal neighborhood to study neighborhood effects on soil phosphorous

Spatial Extent

Comparative Study Sites
29°08'-29°17'N
118°02'-118°11'E

Taxonomic Extent

Soil samples are later related to the tree species of the three trees making up the three tree group.

Data columns available in the raw data part of this dataset

Triangle_ID
Triangle ID used for determination of soil chemical parameters
Data group: Helper
Keywords: Tree Triangle, Soil P, Hedley fractions
Values
205
203
201
204
202
Pos
Individual position within triangle
Data group: Helper
Keywords: CSP
Values
c
a
d
b
CSP
Number of Comparative Study Plot
Data group: BEF research plot name
Keywords: CSP
Values
CSP13
CSP27
CSP14
Plot species
Composition of species and central position within triangle
Data group: Helper
Values
Castanopsis eyrei
CP
Pinus massoniana
CPS
CCC
Lab_ID_Freiburg
Identifier for sample in the Freiburg Lab database
Data group: Laboratory number of Laboratory of Silviculture in Freiburg
Values
h04204
h04202
h04205
h04203
h04201
PH_H20
pH of sample determined in H2O
Unit: µg/g
Data group: pH value
Keywords: Phosphorous
Values
3.94
3.9
3.87
3.78
3.47
PH_CaCl2
pH of sample determined in CaCl2
Unit: µg/g
Data group: pH value
Keywords: Phosphorous
Values
3.19
3.24
3.27
2.98
3.15
Pi_resin
Inorganic P extracted with Resin bags in 20ml H20 for 16hrs, measured in 0.5M HCL
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
13.36435579762397
11.509626246576214
10.975490202369246
11.379354674371191
11.022049144444974
Pi_HCO3
Inorganic P measured in Extract which was shaken in 25ml NaHCO3 for 16hrs
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
0.16172094609693877
0.047200690125581264
0.2930606684092306
0.14133876074174584
0.2718157763840702
Po_HCO3
Organic P measured in Extract which was shaken in 25ml NaHCO3 for 16hrs
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
0.16895366520516553
10.036106479252766
10.049779635735291
0.9226600429686442
0.8076338687968789
Pi_NaOH
Inorganic P measured in Extract which was shaken in 25ml NaOH for 16hrs
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
1.952287142404649
1.9926302252788144
10.894330061432925
11.672117379767663
10.292311151552825
Po_NaOH
Organic P measured in Extract which was shaken in 25ml NaOH for 16hrs
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
11.735363599046371
10.764571952072323
10.200239964904918
11.487959894335777
11.561803493384472
Pi_S-NaOH
Inorganic P measured in Extract which was sonicated in 20ml NaOH for 20min
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
0.10327303179427763
0.11471825873919654
0.027833586897677034
0.07900314092230648
0.119113933564015
Po_S-NaOH
Organic P measured in Extract which was sonicated in 20ml NaOH for 20min
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
10.217791584073202
10.009586731785896
10.164205632518298
10.10034562219117
10.275161555737984
Pi_HCl 1M
Inorganic P extracted with 20ml 1m HCL for 16hrs
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
0
0.040020961904109496
0.009214323723918756
0.024812197017355604
0.013574520336767938
TP_HClconc
Total P measured in Extract which was cooked with 10ml concentrated HCL at 85°C for 20min, after that added an extra 5ml concentrated HCL
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
10.255973769244802
10.034562357845964
10.296002384984433
10.066740058617913
10.05152122594097
TP_residual
Total residual P extracted with HNO3-Pressure-Extraction method
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
10.325302174121083
10.079085028012503
10.817124461842802
10.790607903153832
10.40974955711681
P_lab
Labile P-Pool as the sum of P_resin, Pi_HCO3 and Po_HCO3
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
10.473379367998604
10.374767855315259
10.446468368985222
10.217194968888554
10.1545587624394
P_mod
Moderately labile P-Pool as the sum of Pi_NaOH, Po_NaOH, Pi_S-NaOH, Po_S-NaOH and Pi_HCL 1M
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
16.204145879911614
15.091390792618695
16.58181462340107
13.61824335010444
12.01648530093531
P_sta
Stable P-Pool as the sum of TP_HClconc and TP_residual
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
13.253912867001791
13.576192101195339
12.306110570989745
13.349589608883143
12.693819670745532
Sum_Frac
Sum of all P fractions
Unit: µg/g
Data group: Phosphorus
Keywords: Phosphorous
Values
101.10639012212219
101.1273340996093
101.71057500455136
101.96996517613637
101.83913138533643
P_t
Individually measured total P with HNO3 pressure extraction method as reference for the sum of all P fractions
Unit: µg/g
Data group: Phosphorus
Values
100.926453082139
100.297595174031
100.931401639612
101.12130306083
101.850133570408
C_t
Total Carbon in sample
Unit: %
Data group: Carbon
Keywords: carbon
Values
1.129
1.352
1.118
1.487
10.1899995803833
N_t
Total Nitrogen in sample
Unit: %
Data group: Nitrogen
Keywords: nitrogen
Values
0.0696
0.07049999999999998
0.0661
0.064
0.05639999999999999