Measurements of gas flux (CO2, CH4, N2O) in canopy soils of NUMEX plots on four dates (Sept/Nov 2011 and Jan/April 2012). Measurements were taken in 3 of the 4 NUMEX blocks at each elevation; treatments measured included C, N, NP and P.
Additional Infos:
Gas fluxes were measured by incubating intact soil cores.<br/>
Gas samples were analyzed on a gas chromatograph with a FID and ECD.<br/>
Note that the units for CO2 are mg CO2-C m-2 h-1 (not g CO2-C).<br/>
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Plot ID in NUMEX
Description
:
Plot ID in NUMEX
datetime
--
Date and Time
not mapped
The date and time
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Date time (YYYY-MM-DD hh:mm:ss)
Description
:
Date time (YYYY-MM-DD hh:mm:ss)
PlotTreat
--
Treatment of the plot
no unit
Treatment of the plot with respect to experiments
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Nutrients added to the respective plot
Description
:
N, P or N + P are added to the 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
:
Named by the sampler
Description
:
This column shows whether samples come from an upper (U) or lower (L) position in the sampled tree.
mgCO2
--
mg CO2 field soil respiration measurement
Milligram of carbon dioxide per square meter and hour
mg CO2 field soil respiration measurement
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
trace gas concentrations are measured with a GC equipped with an ECD (for CO2 and N2O) and a FID (for CH4)
Description
:
trace gas concentrations are measured with a GC equipped with an ECD (for CO2 and N2O) and a FID (for CH4)
Instrumentation:
measurementheight=0.0
Instrument:
Description: equipped with FID and a benzenesulfonylpropyl
capillary column (30 m/0.25 mm BPX70)
|
Instrument: Gas chromatograph
|
Vendor: Shimadzu
|
Measurement:
Measurement type: CO2 emision of the soil
|
Unit: Gram of carbon dioxide per square meter and hour
|
Resolution: 0.0
|
Dimension: 0
|
Error: 0.0
|
Size:
|
CH4s
--
CH4 emission from soil
Microgram per square meter and hour
CH4 emission from soil
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
trace gas concentrations are measured with a GC equipped with an ECD (for CO2 and N2O) and a FID (for CH4)
Description
:
trace gas concentrations are measured with a GC equipped with an ECD (for CO2 and N2O) and a FID (for CH4)
Instrumentation:
measurementheight=0.0
Instrument:
Description: equipped with FID and a benzenesulfonylpropyl
capillary column (30 m/0.25 mm BPX70)
|
Instrument: Gas chromatograph
|
Vendor: Shimadzu
|
Measurement:
Measurement type: CO2 emision of the soil
|
Unit: Gram of carbon dioxide per square meter and hour
|
Resolution: 0.0
|
Dimension: 0
|
Error: 0.0
|
Size:
|
N2Os
--
N2O emission from soil
Microgram per square meter and hour
N2O emission from soil
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
trace gas concentrations are measured with a GC equipped with an ECD (for CO2 and N2O) and a FID (for CH4)
Description
:
trace gas concentrations are measured with a GC equipped with an ECD (for CO2 and N2O) and a FID (for CH4)
Instrumentation:
measurementheight=0.0
Instrument:
Description: equipped with FID and a benzenesulfonylpropyl
capillary column (30 m/0.25 mm BPX70)
|
Instrument: Gas chromatograph
|
Vendor: Shimadzu
|
Measurement:
Measurement type: CO2 emision of the soil
|
Unit: Gram of carbon dioxide per square meter and hour
|
Resolution: 0.0
|
Dimension: 0
|
Error: 0.0
|
Size:
|
