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SP004 – Simplified metadata

← Back to SP004 detail

Dataset

Database Code
SP004
Title
Seasonal relationships between soil respiration and water-extractable carbon as influenced by soil temperature and moisture in forest soils of the Andrews Experimental Forest, 1992-1993
Abstract
The overall objective of this study is to model trace gas emissions from forest soils of the H. J. Andrews Experimental Forest. This is to be accomplished by studying trace gas emissions and related variable at a set of 20 permanent plots at the HJA.
Keywords
meteorology; soil chemistry; microclimate; soil respiration; respiration; carbon cycling; inorganic nutrients; carbon; Long-Term Ecological Research (LTER); inorganic nutrients
Date begin
1992-07-12
Date end
1993-07-07
Principal Investigator
Robert P. Griffiths

Entities

  1. SP00401
  2. SP00402
  3. SP00403
  4. SP00404
  5. SP00405

1. SP00401 - Attribute list

SP00401 - attributes
Attribute Type Domain Minimum Maximum Unit
STCODE varchar enum
FORMAT numeric(1.000000) range 1.0000 1.0000 number
SITE varchar enum
DATE datetime freetext
SAMPLOCA varchar freetext
PH numeric(0.010000) range 3.6000 5.9400 pH units
P_MOIST numeric(0.100000) range 17.6000 200.3000 percent
F_DRY_WT numeric(0.001000) range 0.3330 0.8500 number
SOM numeric(0.100000) range 7.4000 89.3000 percent
EXTR_AMM numeric(0.001000) range 0.0000 4.9650 micrograms per gram
MIN_N numeric(0.010000) range 2.5000 147.8200 micrograms per gram
DOC_SOIL numeric(0.100000) range 0.3000 787.2000 micrograms per gram
LAB_RESP numeric(0.001000) range 0.0030 1.8530 micromoles per gram per hour
N2OCONS numeric(0.001000) range -0.4380 3.5800 nanomoles per gram per day
METHCONS numeric(0.010000) range -0.0600 7.3600 nanomoles per gram per hour
DENITPOT numeric(0.001000) range 0.0300 127.2900 nanomoles per gram per hour
METHPROD numeric(0.010000) range 0.1200 5.0500 nanomoles per gram per hour
FLD_RESP numeric(0.010000) range 0.0900 3.3500 grams per square meter per day
LIT_RESP numeric(0.010000) range 0.0000 2.1800 grams per square meter per day
LIT_RESP_P numeric(0.010000) range 0.0000 140.0600 percent
BULKDENS numeric(0.010000) range 0.0800 1.0200 grams per cubic centimeter
MASS_LIT numeric(0.010000) range 0.6600 25.8000 kilograms per square meter
AIRTEMP numeric(0.100000) range 5.5000 31.0000 degrees Celsius
SOILTEMP numeric(0.100000) range 8.5000 19.5000 degrees Celsius

2. SP00402 - Attribute list

SP00402 - attributes
Attribute Type Domain Minimum Maximum Unit
STCODE varchar enum
FORMAT numeric(1.000000) range 2.0000 2.0000 number
SITE varchar enum
DATE datetime freetext
SAMPLOCA varchar freetext
P_MOIST numeric(0.100000) range 3.5000 408.8000 percent
F_DRY_WT numeric(0.001000) range 0.3150 0.9660 number
SOM numeric(0.100000) range 0.0000 89.4000 percent
DOC_SOIL numeric(0.100000) range -3.0000 4053.0000 micrograms per gram
LAB_RESP numeric(0.001000) range -0.2600 4.5560 micromoles per gram per hour
AIRTEMP numeric(0.100000) range -0.7000 31.8000 degrees Celsius
SOILTEMP numeric(0.100000) range -0.2000 19.8000 degrees Celsius

3. SP00403 - Attribute list

SP00403 - attributes
Attribute Type Domain Minimum Maximum Unit
STCODE varchar enum
FORMAT numeric(1.000000) range 3.0000 3.0000 number
SITE varchar enum
RESPDATETIME datetime freetext
SAMPLE varchar freetext
TREATMNT varchar enum
NET_RESP numeric(0.010000) range -0.9700 18.4400 grams per square meter per day

4. SP00404 - Attribute list

SP00404 - attributes
Attribute Type Domain Minimum Maximum Unit
STCODE varchar enum
FORMAT numeric(1.000000) range 4.0000 4.0000 number
SITE varchar enum
DATE datetime freetext
AIRTEMP numeric(0.100000) range -0.7000 32.5000 degrees Celsius
SOILTEMP numeric(0.100000) range -0.2000 26.0000 degrees Celsius
AIRMAX numeric(0.100000) range 0.6000 36.7000 degrees Celsius
AIRMIN numeric(0.100000) range -1.1000 17.2000 degrees Celsius

5. SP00405 - Attribute list

SP00405 - attributes
Attribute Type Domain Minimum Maximum Unit
STCODE varchar enum
FORMAT numeric(1.000000) range 5.0000 5.0000 number
SITE varchar enum
CONTROL varchar freetext
ASPECT varchar enum
MAP_ELEV numeric(1.000000) range 473.0000 1433.0000 meters
LATITUDE numeric(1.000000) range 44.2000 44.2800 degrees latitude or longitude
LONGITUDE numeric(1.000000) range -122.2400 -122.1200 degrees latitude or longitude
VEG varchar enum
STANDAGE varchar enum
COMMENTS varchar freetext

Attribute definitions

AIRMAX
Maximum air temperature during field respiration
AIRMIN
Minimum air temperature during field respiration
AIRTEMP
Mean of air temperatures taken at the start and end of field respiration
ASPECT
Aspect description
BULKDENS
Bulk density of soil
COMMENTS
Site description and comments
CONTROL
Control site for given site code - if any
DATE
Date samples collected (yyyymmdd)
DENITPOT
Denitrification potential
DOC_SOIL
Dissolved organic carbon extracted from soils (as C)
EXTR_AMM
Concentration of ammonium n extracted with 2m KCl
FLD_RESP
Forest floor respiration (g CO2)
FORMAT
Entity number
F_DRY_WT
Wt fraction dry/wet wt soil
LAB_RESP
CO2 released from soils incubated at 15 deg. C
LATITUDE
Site latitude decimal degrees
LIT_RESP
Litter respiration (g CO2)
LIT_RESP_P
Percent litter respiration
LONGITUDE
Site longitude decimal degrees
MAP_ELEV
Site elevation from gis map
MASS_LIT
Mass of litter on a square meter basis
METHCONS
Methane consumption rates from soils
METHPROD
Methane production
MIN_N
Concentration ammonium n after incubation at 40 deg. C for 7 days
N2OCONS
Nitrous oxide consumed by soils
NET_RESP
Net respiration rate (as C)
PH
pH
P_MOIST
Percent moisture (wet-dry/dry)x100
RESPDATETIME
Date and time respiration started
SAMPLE
Sample location number along transect at each site
SAMPLOCA
Location along transect where sample is taken
SITE
Permanent trace gas sites
SOILTEMP
Mean of soil temperatures taken at the start and end of field respiration
SOM
Percent soil organic matter in mineral soil (by combustion at 550 C)
STANDAGE
Standage description, OG=old-growth, CC=clearcut, or age in years
STCODE
Database code
TREATMNT
Treatment code: N=no treatment P=mineral soil respiration eliminated by plastic sheet between mineral soil and litter
VEG
Primary tree vegetation

Enumerated domains

Enumerated domain for attribute: STCODE

Codes for STCODE
Code Description
SP004 FSDB Database Study Code

Enumerated domain for attribute: SITE

Codes for SITE
Code Description
10C Mid-elevation (south slope)
11C Riparian area
1C 1v control + high hot dry mc
1V High hot dry microclimate (mc)
2C North facing
2V North facing clear cut (mid-elevation)
2VC Control for 2v and 3v
3C Valley site near stream (no slope)
3V 15 year old doug-fir stand
4C Cool-wet high elevation (north slope) control for 6v.
4V 35 year old doug-fir stand
4VC Control for 4v
5C Site similar to 3c but higher
5V Big-leaf maple site
5VC Control for 5v
6C High-moisture site (north facing)
6V Sitka alder veg. site
7C Moisture mid-elevation (north facing veg. site)
8C High dry hot site (south facing ridge top)
9C Low elevation (north slope) cool moisture

Enumerated domain for attribute: TREATMNT

Codes for TREATMNT
Code Description
N Total respiration from soil and litter: no treatment
P Respiration from litter only

Enumerated domain for attribute: ASPECT

Codes for ASPECT
Code Description
High flat High flat
North North
North-flat North-flat
South South
South-flat South-flat

Enumerated domain for attribute: VEG

Codes for VEG
Code Description
BL maple Broad-leaf maple
Clearcut Clearcut
Douglas-fir Douglas-fir
Noble fir Noble fir
Sitka alder Sitka alder

Enumerated domain for attribute: STANDAGE

Codes for STANDAGE
Code Description
YS young stand
MS mature stand
OG old growth
CC Clearcut