# Synoptic soil respiration of permanent forest sites in the Andrews Experimental Forest (1993 REU Study)

## Dataset

- **Database Code:** SP005

- **Title:** Synoptic soil respiration of permanent forest sites in the Andrews Experimental Forest (1993 REU Study)

- **Abstract:**

To examine soil respiration as influenced by temperature and moisture to determine the role of CO2 evolution rates in overall carbon dynamics.


- **Keywords:** soil temperature; soil moisture; soil respiration; gas flux; respiration; carbon cycling; inorganic nutrients; Long-Term Ecological Research (LTER); inorganic nutrients

- **Temporal coverage:** 1993-07-15 to 1993-07-15

- **Principal Investigator:** Robert P. Griffiths


## Data Entities

1. SP00501
2. SP00502
3. SP00503

## Entity 1: SP00501

### Attribute list

- **STCODE** — varchar, enum

FSDB Database Study code

  - **SP005** — FSDB Database Study Code SP005


- **FORMAT** — numeric(1.000000), range  1.0000  1.0000, number

Entity number


- **SITENUM** — numeric(1.000000), range  1.0000  170.0000, number

Site number


- **LAT** — numeric(0.001000), range  44.2080  44.2770, degrees latitude or longitude

Latitude


- **LONG** — numeric(0.001000), range  122.1120  122.2580, degrees latitude or longitude

Longitude


- **ELEV** — numeric(1.000000), range  424.0000  1406.0000, meters

Elevation


- **ASPECT** — varchar, enum

Aspect coded by 8 cardinal directions, flat, or top of ridge

  - **** — North
  - **1** — Northeast
  - **2** — East
  - **3** — Southeast
  - **4** — South
  - **5** — Southwest
  - **6** — West
  - **7** — Northwest
  - **8** — Flat
  - **9** — Top of ridge


- **STANDAGE** — varchar, enum

Coded vegetation description

  - **1** — Old growth
  - **2** — Mature stand
  - **3** — Young growth
  - **4** — Green tree retention
  - **5** — Clearcut
  - **9** — Not recorded


- **LOCATION** — varchar, freetext

Location of site


- **ROADPOSN** — varchar, freetext

Position of site relative to road


## Entity 2: SP00502

### Attribute list

- **STCODE** — varchar, enum

FSDB Database Study code

  - **SP005** — FSDB Database Study Code SP005


- **FORMAT** — numeric(1.000000), range  2.0000  2.0000, number

Entity number


- **SITENUM** — numeric(1.000000), range  1.0000  170.0000, number

Site number


- **DATE** — datetime, freetext

Date of sampling


- **RESP** — numeric(0.010000), range  0.0000  6.2500, grams per square meter

Soil respiration corrected for background and adsorbed CO2 (as C)


- **SOILTEMP** — numeric(0.100000), range  7.0000  17.0000, degrees Celsius

Mean soil temperature of beginning and ending soil temperature


- **AIRTEMP** — numeric(0.100000), range  8.0000  17.0000, degrees Celsius

Mean air temperature of beginning and ending air temperature


- **PMOIST** — numeric(0.100000), range  14.9000  189.9000, percent

Percent moisture; ((wet-dry)/dry)*100


- **MAXTEMP** — numeric(1.000000), range  11.0000  32.0000, degrees Celsius

Max 24-hour temperature


- **MINTEMP** — numeric(1.000000), range  6.0000  10.0000, degrees Celsius

Min 24-hour temperature


- **CONTROL** — varchar, enum

Indicates whether background co2 control is also run

  - **N** — No control placed at this site
  - **Y** — Control placed at this site to compensate for background and absorbed co2


## Entity 3: SP00503

### Attribute list

- **STCODE** — varchar, enum

FSDB Database Study code

  - **SP005** — FSDB Database Study Code SP005


- **FORMAT** — numeric(1.000000), range  3.0000  3.0000, number

Entity number


- **SITENUM** — numeric(1.000000), range  1.0000  170.0000, number

Site number


- **SPECIES** — varchar, enum

Tree and shrub species on plot, codes according to Garrison et al., 1972

  - **ABAM** — Abies amabilis
  - **ACCI** — Acer circinatum
  - **ACMA** — Acer macrophyllum
  - **ALRU** — Alnus rubra
  - **ALSI** — Alnus sinuata
  - **BENE** — Berberis nervosa
  - **CEVE** — Ceanothus velutinus
  - **GASH** — Gaultheria shallon
  - **LU** — Lupinus
  - **OXOR** — Oxalis oregana
  - **POTR** — Populus tremuloides
  - **PSME** — Pseudotsuga menziesii
  - **PTAQ** — Pteridium aquilinum
  - **RHMA** — Rhododendron macrophyllum
  - **RUUR** — Rubus ursinus
  - **SCSE** — Scirpus setaceus
  - **TABR** — Taxus brevifolia
  - **THPL** — Thuja plicata
  - **TSHE** — Tsuga heterophylla
  - **TSME** — Tsuga mertensiana
  - **VAUL** — Vaccinium uliginosum
  - **CACH** — Castanopsis chrysophylla
  - **EPAN** — Epilobium angustifolium
  - **GRASS** — Gramin


## Attribute Definitions

**AIRTEMP**

Mean air temperature of beginning and ending air temperature


**ASPECT**

Aspect coded by 8 cardinal directions, flat, or top of ridge


**CONTROL**

Indicates whether background co2 control is also run


**DATE**

Date of sampling


**ELEV**

Elevation


**FORMAT**

Entity number


**LAT**

Latitude


**LOCATION**

Location of site


**LONG**

Longitude


**MAXTEMP**

Max 24-hour temperature


**MINTEMP**

Min 24-hour temperature


**PMOIST**

Percent moisture; ((wet-dry)/dry)*100


**RESP**

Soil respiration corrected for background and adsorbed CO2 (as C)


**ROADPOSN**

Position of site relative to road


**SITENUM**

Site number


**SOILTEMP**

Mean soil temperature of beginning and ending soil temperature


**SPECIES**

Tree and shrub species on plot, codes according to Garrison et al., 1972


**STANDAGE**

Coded vegetation description


**STCODE**

FSDB Database Study code


## Enumerated Domains

### STCODE

- **SP005** — FSDB Database Study Code SP005

### ASPECT

- **** — North

- **1** — Northeast

- **2** — East

- **3** — Southeast

- **4** — South

- **5** — Southwest

- **6** — West

- **7** — Northwest

- **8** — Flat

- **9** — Top of ridge

### STANDAGE

- **1** — Old growth

- **2** — Mature stand

- **3** — Young growth

- **4** — Green tree retention

- **5** — Clearcut

- **9** — Not recorded

### CONTROL

- **N** — No control placed at this site

- **Y** — Control placed at this site to compensate for background and absorbed co2

### SPECIES

- **ABAM** — Abies amabilis

- **ACCI** — Acer circinatum

- **ACMA** — Acer macrophyllum

- **ALRU** — Alnus rubra

- **ALSI** — Alnus sinuata

- **BENE** — Berberis nervosa

- **CEVE** — Ceanothus velutinus

- **GASH** — Gaultheria shallon

- **LU** — Lupinus

- **OXOR** — Oxalis oregana

- **POTR** — Populus tremuloides

- **PSME** — Pseudotsuga menziesii

- **PTAQ** — Pteridium aquilinum

- **RHMA** — Rhododendron macrophyllum

- **RUUR** — Rubus ursinus

- **SCSE** — Scirpus setaceus

- **TABR** — Taxus brevifolia

- **THPL** — Thuja plicata

- **TSHE** — Tsuga heterophylla

- **TSME** — Tsuga mertensiana

- **VAUL** — Vaccinium uliginosum

- **CACH** — Castanopsis chrysophylla

- **EPAN** — Epilobium angustifolium

- **GRASS** — Gramin