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SP004: 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

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Status: irregular
Period: 1992-07-12 to 1993-07-07
Version: 6
Published: 2013-12-16
EDI Package ID: knb-lter-and.3167.6
Source XML: SP004_6.xml

Notice

"As Is" Basis: All content, including maps and forecasts, is provided without warranties. Users are advised to independently verify critical information.

Citation

Griffiths, R. 2013. 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 Long-Term Ecological Research Andrews Forest LTER Site. [Database]. Available: https://andrewsforest-stage.forestry.oregonstate.edu/data/fsdb-data-catalog/SP004 Accessed 2026-05-10.

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.

Coverage

Temporal coverage: 1992-07-12 to 1993-07-07

Geographic coverage: Andrews Experimental Forest

Spatial coverage:

Bounds: W -122.24405300, E -122.11766100, N 44.27792800, S 44.20821400

Purpose

No purpose entries listed in this EML file.

Project

Title: Long-Term Ecological Research

Personnel
  • Sherri L. Johnson - Principal Investigator
    US Forest Service ;Pacific NW Research Station ;3200 SW Jefferson Way, Corvallis, OR, 97331, USA
    Phone: 541-758-7771
    Email: sherri.johnson2@usda.gov, sherri.johnson@oregonstate.edu
  • Julia A. Jones - Principal Investigator
    Oregon State University;Department of Geosciences; Wilkinson Hall 104, Corvallis, OR, 97331-5506, USA
    Phone: (541) 737-1224
    Email: Julia.Jones@oregonstate.edu, geojulia@comcast.net
    ORCID: http://orcid.org/0000-0001-9429-8925
  • Matthew G Betts - Principal Investigator
    Department of Forest Ecosystems and Society; 201E Richardson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
    Phone: (541) 737-3841
    Email: matt.betts@oregonstate.edu
  • Michael P. Nelson - Principal Investigator
    Department of Forest Ecosystems and Society; 201K Richarson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
    Phone: 541-737-9221
    Email: mpnelson@oregonstate.edu
    ORCID: http://orcid.org/0000-0001-6917-4752
  • David Bell - Principal Investigator
    Email: david.bell@usda.gov, david.bell@oregonstate.edu
Abstract
  • The H.J. Andrews Experimental Forest is a living laboratory that provides unparalleled opportunities for the study of forest and stream ecosystems in the central Cascade Range of Oregon. Since 1980, as a part of the National Science Foundation Long Term Ecological Research (NSF-LTER) program, the Andrews Experimental Forest has become a leader in the analysis of forest and stream ecosystem dynamics.
  • Long-term field experiments and measurement programs have focused on climate dynamics, streamflow, water quality, and vegetation succession. Currently researchers are working to develop concepts and tools needed to predict effects of natural disturbance, land use, and climate change on ecosystem structure, function, and species composition.
  • The Andrews Experimental Forest is administered cooperatively by the USDA Forest Service Pacific Northwest Research Station, Oregon State University and the Willamette National Forest. Funding for the research program comes from the National Science Foundation (NSF), US Forest Service Pacific Northwest Research Station, Oregon State University, and other sources.
Funding

Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University. National Science Foundation: DEB1440409

Study Area Description
  • Long-Term Ecological Research
    The Andrews Forest is situated in the western Cascade Range of Oregon, and covers the entire 15,800-acre (6400-ha) drainage basin of Lookout Creek. Elevation ranges from 1350 to 5340 feet (410 to 1630 m). Broadly representative of the rugged mountainous landscape of the Pacific Northwest, the Andrews Forest contains excellent examples of the region's conifer forests and associated wildlife and stream ecosystems. These forests are among the tallest and most productive in the world, with tree heights of often greater than 250 ft (75 m). Streams are steep, cold and clean, providing habitat for numerous aquatic organisms.
Associated Party
  • Robert P. Griffiths
    Role: Principal Investigator
    Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-6559
    Email: bbgriff@peak.org, griff@for.orst.edu
  • Bruce A. Caldwell
    Role: Other Researcher
    Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-3674
    Email: bruce.caldwell@oregonstate.edu
  • Robert P. Griffiths
    Role: Abstractor
    Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-6559
    Email: bbgriff@peak.org, griff@for.orst.edu
  • Robert P. Griffiths
    Role: Creator
    Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-6559
    Email: bbgriff@peak.org, griff@for.orst.edu
Contact
  • Information Manager
    Andrews Forest LTER Program, US Forest Service Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR, 97331
    Email: hjaweb@fsl.orst.edu
  • Robert P. Griffiths
    Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-6559
    Email: bbgriff@peak.org, griff@for.orst.edu
Publisher
  • Andrews Forest LTER Site
    Role: Publisher
    Forest Ecosystems and Society Department in Forestry, Oregon State University, 201K Richardson Hall, Corvallis, OR, 97331-5752
    Phone: (541) 737-8480
    Email: lterweb@fsl.orst.edu
Study Description

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. Field Methods - SP004

Methods

Method Steps

Field Methods - SP004
  • There are 10 plots within each of the twenty sites. These consist of locations along a 50 meter transect 5 meters apart where the gas flux chambers are placed and soil samples taken. Soil respiration was measured using indicating soda lime with a mesh of 6/12 (Fisher #S201-3). The increase in weight is directly proportional to the amount of CO adsorbed during the incubation period. Thirty grams of soda lime was added to 8 oz glass jars fitted with gastight metal lids. They were heated uncovered for 8 hr at 100°C to remove moisture. At time 0 the jars were placed on metal mesh stands within a incubation chamber (3 gal plastic ice cream tubs with a 23.5 cm opening), the lids were removed and the chambers sealed into the soils. Twenty four hours later, the lids were placed back on the jars and returned to the laboratory where they were again dried (with lid off) at 100°C for 8 hr.
  • At each site, there was one control jar used to determine background CO levels and the uptake of CO during drying (jar was placed in a sealed incubation vessel). At every other location along the transect, about 800 g of soil was collected from the top 10 cm of mineral soil and put into plastic bags. These soils were sieved through a 2 mm sieve and used for the laboratory analyses. In the field, maximum and minimum 24 hr air temperatures were recorded using max-min thermometers or by traces using small portable thermographs in plastic bags. In addition, air and soil temperatures were taken at the beginning and end of each field respiration period.
  • : At each of 10 plots within each site, there were two chambers placed; one to measure total soil respiration as was the case in the monthly samplings and one next to it in which a plastic sheet was installed just above the mineral soil. The plastic sheets were installed 24 hr before the start of the actual experiment. By comparing the CO released by the total soil including both litter and mineral soil and litter alone, the contribution of mineral soil (and roots) could be calculated.
  • At each of the ten plots along the transect, 4.7 x 10 cm mineral soil cores were taken in the top 10 cm of mineral soil to measure bulk density. Another set of cores was used to estimate litter concentrations.
Laboratory Methods - SP004
  • a. For laboratory respirations, 5 gr (wet weight) of 2 mm sieved soil was added to a 25 mL Erlenmeyer flask and sealed with a serum bottle stopper. After the flask was sealed, the flask was preincubation for at least 1 hr at 15°C prior to taking the first headspace measurement. A sample of the headspace was then taken and analyzed using a gas chromatograph fitted with a TCD detector; two hours later, a second reading was taken. The resulting data were normalized to incubation time and g dry weight.
  • b. The methane oxidation experiments were conducted in much the same way as the respiration experiments except about 30 ppm methane was added to the incubation chambers and the flasks were incubated for one hour at 15°C. The reduction in methane was measured with a gas chromatograph fitted with a flame ionization detector. The same approach was taken with the nitrous oxide consumption but an electron capture detector was used. During the second July sampling denitrification potentials were measured by adding 5 g wet weight of sieved soil to a 25 mL Erlenmeyer flask which was stoppered and the headspace was purged with Ar for a minimum of 3 mins. at over 100 mL per min. Two mL of a sterile solution containing 10-3 M glucose and 10-3 M nitrate is injected through the stopper and an equal volume of headspace was removed. The flasks were incubated at 15°C for a least one hour before the first headspace sample is taken for NO analysis. The sample is then incubated at the same temperature for two hours and a second headspace sample is taken using the ECD detector. During the second July, methane production measurements were also taken by purging the headspace of the flask with Ar before methane production was measured after at least a 1 hr preincubation period.
  • c. Dissolved Organic Carbon (DOC) was determined by adding 10 gr of sieved soil to 30 mL DH20 within a 125 mL Erlenmeyer flask. The flasks were shaken on a rotary shaker for 1 hr at 22°C. The soil slurries were allowed to settle at 22°C for 1 hr and then 1.5 mL was removed and added to a 1.5 mL capped microfuge tube. The slurry was spun for 5 min. in a Beckman microfuge and 0.5 mL was removed and placed into a 0.5 mL microfuge tube and frozen for future analyses. DOC measurements were made on a Dormann Carbon Analyzer using 100 ppm standards to calibrate the instrument.
  • d. Ten gr. sieved soil samples were used to measure extractable ammonium and mineralizable nitrogen. The extractable ammonium was measured by adding 50 mL of 2 M KCl to the soil in a 250 mL Erlenmeyer flask and then shaken on a rotary shaker for 1 hour at which time ammonium concentrations were determined using an Orion ammonium electrode. The minerlizable nitrogen was measured by adding 10 g of soil to a large 53 mL test tube that was then filled with DH20, sealed and incubated for 7 days at 40°C. Ammonium concentrations were determined in incubate soil slurries to which an equal volume of 4 M KCl was added. All of the above measurements except the DOCs were done in duplicate.
  • e. Ten gr samples were dried for 8 hr at 80°C to determine dry wts. One of these was heated in a furnace to 280°C for at least 4 hr and reweighed to determine level of labile carbon present. They were then heated again to 550°C for a least 4 hr to determine SOM. The other dried sample was used to determine pHs by adding 10X wt./vol. water.

Sampling

Study Extent
  • See http://andrewsforest.oregonstate.edu/data/studies/sp004/sp004_sitedescription.pdf
Sampling Description
  • These sites were selected to give a wide representation of different microclimates and vegetation types found at the HJA. The microclimate sites were selected along a rough N/S gradient from the top of a ridge to the North to another ridge to the South. Another set was selected along an roughly E/W gradient which gave representative sites of different elevations and aspects including sites that were hot and dry and those that are typically wet and cold. Also included were sites near streams that experience cooling. The vegetation sites included clearcut sites, and regenerated sites of different age classes. In addition, we included a Sitka alder and a broad-leave maple site.
  • Two types of studies were conducted; (1) monthly measurements of field respiration, temperature, moisture, laboratory respiration, soil organic matter by combustion to 550 C, labile carbon by combustion to 280 C, and dissolved organic carbon and (2) an extended measurements of other variables in addition to those normally measured during monthly studies. These were conducted at every other site along transects during the month of July 1992 and 1993. In July 1992, we measured mineralizable nitrogen, extractable ammonium, litter concentrations, litter respiration (separate from the normal total soil respirations taken monthly), and both nitrous oxide and methane consumption rates using gas concentrations approximately 10X ambient. In July 1993, we made the following changes from the 1992 protocol; bulk density was also measured as was denitrification potentials and methane production rates. The nitrous oxide and methane consumption experiments were dropped.
Spatial Sampling Units
  • Andrews Experimental Forest (HJA)
    W -122.26172200, E -122.10084700, N 44.28196400, S 44.19770400
    Altitude: 1631 to 1631 meter
Software

No software entries listed in this EML file.

Keywords
  • LTER controlled vocabulary: meteorology (theme), soil chemistry (theme), microclimate (theme), soil respiration (theme), respiration (theme), carbon cycling (theme), inorganic nutrients (theme), carbon (theme)
  • Andrews Experimental Forest site thesaurus: Long-Term Ecological Research (LTER) (theme)
  • LTER core research areas: inorganic nutrients (theme)
Taxonomic Hierarchy
  • All Organisms: All Organisms
  • Highest common category (ca. kingdom): Plantae
  • Division or Phylum: Magnoliophyta
  • Class: Magnoliopsida
  • Subclass: Rosidae
  • Order: Sapindales
  • Family: Aceraceae
  • Genus: Acer
  • Species: Acer macrophyllum
  • Subclass: Hamamelididae
  • Order: Fagales
  • Family: Betulaceae
  • Genus: Alnus
  • Species: Alnus sinuata
  • Division or Phylum: Coniferophyta
  • Class: Pinopsida
  • Order: Pinales
  • Family: Pinaceae
  • Genus: Pseudotsuga
  • Species: Pseudotsuga menziesii
  • Genus: Abies
  • Species: Abies procera
Data Entities
# Entity Metadata Data
1 SP00401
SP00401
Soil Characteristics and Microbial Variables - Full set:
 METADATA DATA
2 SP00402
SP00402
Soil Characteristics and Microbial Variables - Routine set:
 METADATA DATA
3 SP00403
SP00403
Field Respiration:
 METADATA DATA
4 SP00404
SP00404
Air and Soil Temperature:
 METADATA DATA
5 SP00405
SP00405
Site Location and Description:
 METADATA DATA
Metadata
SP00401 - SP00401

Object name: SP00401.csv

Records: 200

Attributes: 24

File size: 23987 byte

Checksum (MD5): 2a239ce1f79ada82d929e32c4ebfac2a

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    SP00401.DATE, SP00401.SAMPLOCA, SP00401.SITE
  • notNullConstraint: NOTNULL
    SP00401.DATE, SP00401.FORMAT, SP00401.SAMPLOCA, SP00401.SITE, SP00401.STCODE
Attributes (24)
STCODE - char(10) (nominal)

ID: SP00401.STCODE

Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • SP004
    FSDB Database Study Code
FORMAT - numeric(1,0) (interval)

ID: SP00401.FORMAT

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=1.0000 (exclusive=false), max=1.0000 (exclusive=false)

SITE - char(5) (nominal)

ID: SP00401.SITE

Permanent trace gas sites

Type system: Microsoft SQL Server 2008

Code definitions (20)
  • 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
DATE - datetime (dateTime)

ID: SP00401.DATE

Date samples collected (yyyymmdd)

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

SAMPLOCA - char(2) (nominal)

ID: SP00401.SAMPLOCA

Location along transect where sample is taken

Type system: Microsoft SQL Server 2008

PH - numeric(5,2) (ratio)

ID: SP00401.PH

pH

Type system: Microsoft SQL Server 2008

Unit: pH units

Precision: 0.010000

Numeric domain: type=real, min=3.6000 (exclusive=false), max=5.9400 (exclusive=false)

P_MOIST - numeric(5,1) (ratio)

ID: SP00401.P_MOIST

Percent moisture (wet-dry/dry)x100

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=17.6000 (exclusive=false), max=200.3000 (exclusive=false)

F_DRY_WT - numeric(5,3) (ratio)

ID: SP00401.F_DRY_WT

Wt fraction dry/wet wt soil

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 0.001000

Numeric domain: type=real, min=0.3330 (exclusive=false), max=0.8500 (exclusive=false)

SOM - numeric(5,1) (ratio)

ID: SP00401.SOM

Percent soil organic matter in mineral soil (by combustion at 550 C)

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=7.4000 (exclusive=false), max=89.3000 (exclusive=false)

EXTR_AMM - numeric(6,3) (ratio)

ID: SP00401.EXTR_AMM

Concentration of ammonium n extracted with 2m KCl

Type system: Microsoft SQL Server 2008

Unit: micrograms per gram

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=4.9650 (exclusive=false)

MIN_N - numeric(6,2) (ratio)

ID: SP00401.MIN_N

Concentration ammonium n after incubation at 40 deg. C for 7 days

Type system: Microsoft SQL Server 2008

Unit: micrograms per gram

Precision: 0.010000

Numeric domain: type=real, min=2.5000 (exclusive=false), max=147.8200 (exclusive=false)

DOC_SOIL - numeric(6,1) (ratio)

ID: SP00401.DOC_SOIL

Dissolved organic carbon extracted from soils (as C)

Type system: Microsoft SQL Server 2008

Unit: micrograms per gram

Precision: 0.100000

Numeric domain: type=real, min=0.3000 (exclusive=false), max=787.2000 (exclusive=false)

LAB_RESP - numeric(6,3) (ratio)

ID: SP00401.LAB_RESP

CO2 released from soils incubated at 15 deg. C

Type system: Microsoft SQL Server 2008

Unit: micromoles per gram per hour

Precision: 0.001000

Numeric domain: type=real, min=0.0030 (exclusive=false), max=1.8530 (exclusive=false)

N2OCONS - numeric(6,3) (ratio)

ID: SP00401.N2OCONS

Nitrous oxide consumed by soils

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per day

Precision: 0.001000

Numeric domain: type=real, min=-0.4380 (exclusive=false), max=3.5800 (exclusive=false)

METHCONS - numeric(5,2) (ratio)

ID: SP00401.METHCONS

Methane consumption rates from soils

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per hour

Precision: 0.010000

Numeric domain: type=real, min=-0.0600 (exclusive=false), max=7.3600 (exclusive=false)

DENITPOT - numeric(6,3) (ratio)

ID: SP00401.DENITPOT

Denitrification potential

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per hour

Precision: 0.001000

Numeric domain: type=real, min=0.0300 (exclusive=false), max=127.2900 (exclusive=false)

METHPROD - numeric(5,2) (ratio)

ID: SP00401.METHPROD

Methane production

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per hour

Precision: 0.010000

Numeric domain: type=real, min=0.1200 (exclusive=false), max=5.0500 (exclusive=false)

FLD_RESP - numeric(5,2) (ratio)

ID: SP00401.FLD_RESP

Forest floor respiration (g CO2)

Type system: Microsoft SQL Server 2008

Unit: grams per square meter per day

Precision: 0.010000

Numeric domain: type=real, min=0.0900 (exclusive=false), max=3.3500 (exclusive=false)

LIT_RESP - numeric(5,2) (ratio)

ID: SP00401.LIT_RESP

Litter respiration (g CO2)

Type system: Microsoft SQL Server 2008

Unit: grams per square meter per day

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=2.1800 (exclusive=false)

LIT_RESP_P - numeric(6,2) (ratio)

ID: SP00401.LIT_RESP_P

Percent litter respiration

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=140.0600 (exclusive=false)

BULKDENS - numeric(5,2) (ratio)

ID: SP00401.BULKDENS

Bulk density of soil

Type system: Microsoft SQL Server 2008

Unit: grams per cubic centimeter

Precision: 0.010000

Numeric domain: type=real, min=0.0800 (exclusive=false), max=1.0200 (exclusive=false)

MASS_LIT - numeric(5,2) (ratio)

ID: SP00401.MASS_LIT

Mass of litter on a square meter basis

Type system: Microsoft SQL Server 2008

Unit: kilograms per square meter

Precision: 0.010000

Numeric domain: type=real, min=0.6600 (exclusive=false), max=25.8000 (exclusive=false)

AIRTEMP - numeric(5,1) (interval)

ID: SP00401.AIRTEMP

Mean of air temperatures taken at the start and end of field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=5.5000 (exclusive=false), max=31.0000 (exclusive=false)

SOILTEMP - numeric(5,1) (ratio)

ID: SP00401.SOILTEMP

Mean of soil temperatures taken at the start and end of field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=8.5000 (exclusive=false), max=19.5000 (exclusive=false)

SP00402 - SP00402

Object name: SP00402.csv

Records: 1395

Attributes: 12

File size: 80575 byte

Checksum (MD5): c9f81cd6951ad2c83f77ece7f7fc2148

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    SP00402.DATE, SP00402.SAMPLOCA, SP00402.SITE
  • notNullConstraint: NOTNULL
    SP00402.DATE, SP00402.FORMAT, SP00402.SAMPLOCA, SP00402.SITE, SP00402.STCODE
Attributes (12)
STCODE - char(10) (nominal)

ID: SP00402.STCODE

Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • SP004
    FSDB Database Study Code
FORMAT - numeric(1,0) (interval)

ID: SP00402.FORMAT

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=2.0000 (exclusive=false), max=2.0000 (exclusive=false)

SITE - char(5) (nominal)

ID: SP00402.SITE

Permanent trace gas sites

Type system: Microsoft SQL Server 2008

Code definitions (20)
  • 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
DATE - datetime (dateTime)

ID: SP00402.DATE

Date samples collected (yyyymmdd)

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

SAMPLOCA - char(2) (nominal)

ID: SP00402.SAMPLOCA

Location along transect where sample is taken

Type system: Microsoft SQL Server 2008

P_MOIST - numeric(5,1) (ratio)

ID: SP00402.P_MOIST

Percent moisture (wet-dry/dry)x100

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=3.5000 (exclusive=false), max=408.8000 (exclusive=false)

F_DRY_WT - numeric(5,3) (ratio)

ID: SP00402.F_DRY_WT

Wt fraction dry/wet wt soil

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 0.001000

Numeric domain: type=real, min=0.3150 (exclusive=false), max=0.9660 (exclusive=false)

SOM - numeric(5,1) (ratio)

ID: SP00402.SOM

Percent soil organic matter in mineral soil (by combustion at 550 C)

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=89.4000 (exclusive=false)

DOC_SOIL - numeric(6,1) (ratio)

ID: SP00402.DOC_SOIL

Dissolved organic carbon extracted from soils (as C)

Type system: Microsoft SQL Server 2008

Unit: micrograms per gram

Precision: 0.100000

Numeric domain: type=real, min=-3.0000 (exclusive=false), max=4053.0000 (exclusive=false)

LAB_RESP - numeric(6,3) (ratio)

ID: SP00402.LAB_RESP

CO2 released from soils incubated at 15 deg. C

Type system: Microsoft SQL Server 2008

Unit: micromoles per gram per hour

Precision: 0.001000

Numeric domain: type=real, min=-0.2600 (exclusive=false), max=4.5560 (exclusive=false)

AIRTEMP - numeric(5,1) (interval)

ID: SP00402.AIRTEMP

Mean of air temperatures taken at the start and end of field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=-0.7000 (exclusive=false), max=31.8000 (exclusive=false)

SOILTEMP - numeric(5,1) (ratio)

ID: SP00402.SOILTEMP

Mean of soil temperatures taken at the start and end of field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=-0.2000 (exclusive=false), max=19.8000 (exclusive=false)

SP00403 - SP00403

Object name: SP00403.csv

Records: 2500

Attributes: 7

File size: 109341 byte

Checksum (MD5): 0995f3e89f83d72ecc9d59e6954e0dd1

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    SP00403.RESPDATETIME, SP00403.SAMPLE, SP00403.SITE
  • notNullConstraint: NOTNULL
    SP00403.RESPDATETIME, SP00403.FORMAT, SP00403.SAMPLE, SP00403.SITE, SP00403.STCODE
Attributes (7)
STCODE - char(10) (nominal)

ID: SP00403.STCODE

Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • SP004
    FSDB Database Study Code
FORMAT - numeric(1,0) (interval)

ID: SP00403.FORMAT

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=3.0000 (exclusive=false), max=3.0000 (exclusive=false)

SITE - char(5) (nominal)

ID: SP00403.SITE

Permanent trace gas sites

Type system: Microsoft SQL Server 2008

Code definitions (20)
  • 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
RESPDATETIME - datetime (dateTime)

ID: SP00403.RESPDATETIME

Date and time respiration started

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD hh:mm:ss

SAMPLE - char(2) (nominal)

ID: SP00403.SAMPLE

Sample location number along transect at each site

Type system: Microsoft SQL Server 2008

TREATMNT - char(1) (nominal)

ID: SP00403.TREATMNT

Treatment code: N=no treatment P=mineral soil respiration eliminated by plastic sheet between mineral soil and litter

Type system: Microsoft SQL Server 2008

Code definitions (2)
  • N
    Total respiration from soil and litter: no treatment
  • P
    Respiration from litter only
NET_RESP - numeric(5,2) (ratio)

ID: SP00403.NET_RESP

Net respiration rate (as C)

Type system: Microsoft SQL Server 2008

Unit: grams per square meter per day

Precision: 0.010000

Numeric domain: type=real, min=-0.9700 (exclusive=false), max=18.4400 (exclusive=false)

SP00404 - SP00404

Object name: SP00404.csv

Records: 247

Attributes: 8

File size: 10169 byte

Checksum (MD5): 9ff7164295be8ba3faa0035faee962fb

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    SP00404.DATE, SP00404.SITE
  • notNullConstraint: NOTNULL
    SP00404.DATE, SP00404.FORMAT, SP00404.SITE, SP00404.STCODE
Attributes (8)
STCODE - char(10) (nominal)

ID: SP00404.STCODE

Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • SP004
    FSDB Database Study Code
FORMAT - numeric(1,0) (interval)

ID: SP00404.FORMAT

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=4.0000 (exclusive=false), max=4.0000 (exclusive=false)

SITE - char(5) (nominal)

ID: SP00404.SITE

Permanent trace gas sites

Type system: Microsoft SQL Server 2008

Code definitions (20)
  • 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
DATE - datetime (dateTime)

ID: SP00404.DATE

Date samples collected (yyyymmdd)

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

AIRTEMP - numeric(5,1) (interval)

ID: SP00404.AIRTEMP

Mean of air temperatures taken at the start and end of field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=-0.7000 (exclusive=false), max=32.5000 (exclusive=false)

SOILTEMP - numeric(5,1) (ratio)

ID: SP00404.SOILTEMP

Mean of soil temperatures taken at the start and end of field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=-0.2000 (exclusive=false), max=26.0000 (exclusive=false)

AIRMAX - numeric(5,1) (interval)

ID: SP00404.AIRMAX

Maximum air temperature during field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=0.6000 (exclusive=false), max=36.7000 (exclusive=false)

AIRMIN - numeric(5,1) (interval)

ID: SP00404.AIRMIN

Minimum air temperature during field respiration

Type system: Microsoft SQL Server 2008

Unit: degrees Celsius

Precision: 0.100000

Numeric domain: type=real, min=-1.1000 (exclusive=false), max=17.2000 (exclusive=false)

SP00405 - SP00405

Object name: SP00405.csv

Records: 20

Attributes: 11

File size: 2328 byte

Checksum (MD5): 6b85ffd682156b146f6b61cd6f7839f6

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    SP00405.SITE
  • notNullConstraint: NOTNULL
    SP00405.ASPECT, SP00405.COMMENTS, SP00405.FORMAT, SP00405.LATITUDE, SP00405.LONGITUDE, SP00405.MAP_ELEV, SP00405.SITE, SP00405.STCODE, SP00405.VEG
Attributes (11)
STCODE - char(10) (nominal)

ID: SP00405.STCODE

Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • SP004
    FSDB Database Study Code
FORMAT - numeric(1,0) (interval)

ID: SP00405.FORMAT

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=5.0000 (exclusive=false), max=5.0000 (exclusive=false)

SITE - char(5) (nominal)

ID: SP00405.SITE

Permanent trace gas sites

Type system: Microsoft SQL Server 2008

Code definitions (20)
  • 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
CONTROL - char(10) (nominal)

ID: SP00405.CONTROL

Control site for given site code - if any

Type system: Microsoft SQL Server 2008

ASPECT - char(10) (nominal)

ID: SP00405.ASPECT

Aspect description

Type system: Microsoft SQL Server 2008

Code definitions (5)
  • High flat
    High flat
  • North
    North
  • North-flat
    North-flat
  • South
    South
  • South-flat
    South-flat
MAP_ELEV - numeric(4,0) (ratio)

ID: SP00405.MAP_ELEV

Site elevation from gis map

Type system: Microsoft SQL Server 2008

Unit: meters

Precision: 1.000000

Numeric domain: type=natural, min=473.0000 (exclusive=false), max=1433.0000 (exclusive=false)

LATITUDE - numeric(13,6) (interval)

ID: SP00405.LATITUDE

Site latitude decimal degrees

Type system: Microsoft SQL Server 2008

Unit: degrees latitude or longitude

Precision: 1.000000

Numeric domain: type=real, min=44.2000 (exclusive=false), max=44.2800 (exclusive=false)

LONGITUDE - numeric(13,6) (interval)

ID: SP00405.LONGITUDE

Site longitude decimal degrees

Type system: Microsoft SQL Server 2008

Unit: degrees latitude or longitude

Precision: 1.000000

Numeric domain: type=real, min=-122.2400 (exclusive=false), max=-122.1200 (exclusive=false)

VEG - char(10) (nominal)

ID: SP00405.VEG

Primary tree vegetation

Type system: Microsoft SQL Server 2008

Code definitions (5)
  • BL maple
    Broad-leaf maple
  • Clearcut
    Clearcut
  • Douglas-fir
    Douglas-fir
  • Noble fir
    Noble fir
  • Sitka alder
    Sitka alder
STANDAGE - char(10) (nominal)

ID: SP00405.STANDAGE

Standage description, OG=old-growth, CC=clearcut, or age in years

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • YS
    young stand
  • MS
    mature stand
  • OG
    old growth
  • CC
    Clearcut
COMMENTS - varchar(60) (nominal)

ID: SP00405.COMMENTS

Site description and comments

Type system: Microsoft SQL Server 2008

Units
grams per cubic centimeter g/cm3 massDensity gramPerCentimeterCubed kilogramPerMeterCubed 1000 grams per cubic centimeter
kilograms per square meter kg/m2 arealMassDensity kilogramPerMeterSquared kilogramPerMeterSquared 1 kilograms per square meter
nanomoles per gram per hour nmol/g*hr amountOfSubstanceWeightFlux nanomolePerGramPerHour molePerKilogramPerSecond 0.0036 nanomoles per gram per hour
nanomoles per gram per day nmol/g*day amountOfSubstanceWeightFlux nanomolePerGramPerDay molePerKilogramPerSecond 0.0864 nanomoles per g per day
pH units ph undefined pH unknown N/A Scale used for pH measurements
micrograms per gram ug/g massPerMass microgramPerGram gramPerGram 0.000001 micrograms per gram
micromoles per gram per hour umol/g*hr amountOfSubstanceWeightFlux micromolePerGramPerHour molePerKilogramPerSecond 3.6 micromoles per g per hour
percent % dimensionless number dimensionless 100 percent; a number
grams per square meter per day g/m2*day arealMassDensityRate gramPerMeterSquaredPerDay kilogramPerMeterSquaredPerSecond 86.4 grams per square meter per day
degrees Celsius deg c temperature celsiusDegree kelvin 1 Degrees Celsius; a common unit of temperature; constantToSI=273.18
number number dimensionless number dimensionless 1 dimensionless number, i.e., ratio, count
degrees latitude or longitude deg lat-lon latitudeLongitude degree unknown N/A degrees; latitude (parallel) or longitude (meridian)
meters m length meter meter 1 meter; SI unit of length
Related Datasets

No related dataset codes found in the EML text fields.

Related Publications

No publication citations found in this EML file.

Related Files
Intellectual Rights

Data Use Agreement:

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. This Data Set is released under the Creative Commons license CC BY "Attribution" (see: https://creativecommons.org/licenses/by/4.0/). Creative Commons license CC BY - Attribution is a license that allows others to distribute, remix, tweak, and build upon your work (even commercially), as long as you are credited for the original creation. This license accommodates maximum dissemination and use of licensed materials.

It is considered professional conduct and an ethical obligation to acknowledge the work of other scientists. The Data User is asked to provide attribution of the original work if this data package is shared in whole or by individual parts or used in the derivation of other products. A recommended citation is provided for each Data Set in the Andrews LTER data catalog (see: http://andlter.forestry.oregonstate.edu/data/catalog/datacatalog.aspx). A generic citation is also provided for this Data Set on the website https://portal.edirepository.org in the summary metadata page. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed and all data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data.

General acknowledgement: Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.

Licensed

License: N/A

Maintenance

Maintenance update frequency: irregular

Description

  • An update history is logged and maintained with each new version of every dataset.

Change History

  • Version1 (1992-12-01)
    Original metadata creation.
  • Version2 (2002-04-04)
    Metadata restructured and moved into SQLServer metadata database LTERMETA. Data moved into SQLServer database FSDBDATA.
  • Version6 (2013-12-16)
    Updated dates to truetype and stcode to enumerated. Reran createcsv to recreated delimiter for uploading into PASTA.