| Attribute Name -- Attribute Label |
Unit |
Attribute definition |
Site_name
--
Site name
|
no unit |
Site name |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
Name of the sampled site |
|
Description
:
|
Name of the sampled site |
|
|
PlotID
--
ID of the plot
|
no unit |
ID of the plot |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
RESPECT core plots |
|
Description
:
|
Predefined RESPECT core plots |
|
|
subplot_id
--
ID of the subplot
|
no unit |
ID of the subplot |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
RESPECT core plots - subplots |
|
Description
:
|
RESPECT core plots - subplots |
|
|
org-layer-depth
--
Depth of the soil organic layer
|
Centimeter |
Depth of the soil organic layer. |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
organic layer depth |
|
Description
:
|
We measured the depth of the soil organic layers in a forest plot. The value is a mean of 4 measurements in the same plot/subplot. |
|
|
PHs_H2O
--
pH of soil H2O
|
Unitless |
pH of soil measured in water |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
soil pH(H2O) |
|
Description
:
|
The pH was measured in a suspension of 10 g sieved soil in 25 mL deionized water. |
|
|
soil_C_perc
--
Carbon in soil
|
Percent |
Percentage of carbon (C) in the soil |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
CN analyzer |
|
Description
:
|
Leaf dry mass was analyzed for its C and N content with a CN analyzer (Vario EL III, Hanau, Germany) |
|
Instrumentation:
|
Instrument:
Description: CNS analysis with high temperature combustion of organic and inorganic solid samples and detection of the gaseous products with WLD
|
Instrument: CNS-Analyser HERAEUS
|
Vendor: HERAEUS
|
|
|
|
soil_N_perc
--
Nitrogen in soil
|
Percent |
Percentage of nitrogen (N) in the soil |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
CN analyzer |
|
Description
:
|
Leaf dry mass was analyzed for its C and N content with a CN analyzer (Vario EL III, Hanau, Germany) |
|
Instrumentation:
|
Instrument:
Description: CNS analysis with high temperature combustion of organic and inorganic solid samples and detection of the gaseous products with WLD
|
Instrument: CNS-Analyser HERAEUS
|
Vendor: HERAEUS
|
|
|
|
CN_ratio
--
C/N ratio
|
Ratio |
Carbon/Nitrogen ratio |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
C/N ratio |
|
Description
:
|
C/N ratio in the soil. |
|
|
P_resin
--
plant-available phosphorus
|
Micromol per gram |
plant-available phosphorus |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
plant-available P |
|
Description
:
|
P availability was estimated as resin-exchangeable P, i.e., the exchange of phosphate ions by anion exchange resin, which may give a minimum estimate of plant-available P. |
|
|
extr_Al
--
Extractable Al (mineral soil)
|
Micromol per gram |
Extractable Al (mineral soil) |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
Extractable Al (mineral soil) |
|
Description
:
|
extractable Al by 0.2 N BaCl2 solution (µmol/g) |
|
|
extr_Ca
--
Extractable Ca (mineral soil)
|
Micromol per gram |
Extractable Ca (mineral soil) |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
Extractable Ca (mineral soil) |
|
Description
:
|
extractable Ca by 0.2 N BaCl2 solution (µmol/g) |
|
|
extr_K
--
Extractable K (mineral soil)
|
Micromol per gram |
Extractable K (mineral soil) |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
Extractable K (mineral soil) |
|
Description
:
|
extractable K by 0.2 N BaCl2 solution (µmol/g) |
|
|
extr_Mg
--
Extractable Mg (mineral soil)
|
Micromol per gram |
Extractable Mg (mineral soil) |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
Extractable Mg (mineral soil) |
|
Description
:
|
extractable Mg by 0.2 N BaCl2 solution (µmol/g) |
|
|
CEC
--
Cation exchange capacity of soil
|
Microequivalent per gram |
Cation exchange capacity of soil |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
mineral soil CEC |
|
Description
:
|
In the mineral soil the salt-exchangeable base cations were determined by extraction with 0.2 M BaCl2 solution and subsequent ICP-OES-measurements. |
|
|
BS
--
Base saturation of soil
|
Percent |
Base saturation of soil |
|
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
|
--- Step
1
---
|
|
Title
:
|
Calculation of base saturation |
|
Description
:
|
Base saturation is calculated from the ratio of exchangeable cations to the CEC |
|
|
