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TN021 – Simplified metadata
Dataset
- Database Code
- TN021
- Title
- Soil solution chemistry in Detrital Input and Removal Treatments (DIRT) from the Andrews Experimental Forest, 1999-2019
- Abstract
- The Detrital Input and Removal Treatment (DIRT) Project was established to assess how rates and sources of plant litter inputs influence accumulations or losses of organic matter in forest soils. DIRT employs chronic additions and exclusions of aboveground litter inputs and exclusion of root ingrowth to permanent plots at eight forested and two shrub/grass sites in the northern hemisphere to investigate how soil organic matter (SOM) dynamics are influenced by plant detrital inputs across ecosystem and soil types. The long-term DIRT study at the H.J. Andrews Experimental Forest was established in an old-growth forest stand on the valley floor and aims to address how detrital quality and quantity control soil organic matter accumulation and stabilization. The DIRT plots consist of treatments that double leaf litter, double woody debris inputs, exclude aboveground litter inputs, remove root inputs via trenching, or remove all organic matter inputs. We measured changes in soil solution chemistry with depth, and conducted long-term incubations of bulk soils from different treatments in order to elucidate effects of detrital inputs on the relative amounts and lability of different soil C pools. These data include various properties of the DIRT plots obtained during re-measurements at various intervals. C and N concentrations and content in soil, CO2 efflux, and soil solution chemistry are measured from bulk samples to 1 m depth, field respiration measurements, and lysimeters at 2 depths, respectively, and assessed at Oregon State University.
- Keywords
- biogeochemistry; decomposition; carbon cycling; litterfall; nutrients; terrestrial ecosystems
- Date begin
- 1999-12-01
- Date end
- 2011-04-15
- Principal Investigator
- Kate Lajtha
Entities
- TN02101
- TN02102
- TN02103
- TN02104
- TN02105
1. TN02101 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1) | range | 1.0000 | 1.0000 | number |
| YEAR | numeric(1) | range | 1999.0000 | 1999.0000 | year (yyyy) |
| FRACTION | varchar | enum | |||
| SAMPLE_NO | numeric(1) | range | 1.0000 | 18.0000 | number |
| PLOT | varchar | enum | |||
| TREAT | varchar | enum | |||
| SOIL_MASS_WET | numeric(1) | range | 50.0000 | 50.0900 | grams |
| SOIL_MASS_DRY | numeric(1) | range | 0.0000 | 46.4600 | grams |
| PCT_C_ALL | numeric(1) | range | 0.0000 | 100.0000 | percent |
| PCT_N_ALL | numeric(1) | range | 0.0000 | 100.0000 | percent |
| SOIL_MASS_FRACTION | numeric(1) | range | 0.8000 | 28.9000 | grams |
| PCT_C_FRACTION | numeric(1) | range | 0.0000 | 100.0000 | percent |
| PCT_N_FRACTION | numeric(1) | range | 0.0000 | 100.0000 | percent |
| MGC_GSOIL_FRACTION | numeric(1) | range | 0.0100 | 53.5000 | milligrams |
| MGC_FRACTION_GSOIL_ALL | numeric(1) | range | 0.2400 | 1160.3500 | milligrams per gram |
| MGN_GSOIL_FRACTION | numeric(1) | range | 0.0800 | 42.8200 | milligrams |
| MGN_FRACTION_GSOIL_ALL | numeric(1) | range | 0.0200 | 934.4400 | milligrams per gram |
2. TN02102 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1) | range | 2.0000 | 2.0000 | number |
| SAMPLE | numeric(1) | range | 1.0000 | 18.0000 | number |
| YEAR | numeric(1) | range | 1999.0000 | 1999.0000 | year (yyyy) |
| SOIL_MASS_WET | numeric(1) | range | 4.9000 | 5.9000 | grams |
| SOIL_MASS_50C | numeric(1) | range | 4.4000 | 5.5800 | grams |
| MOISTURE_50C | numeric(1) | range | 0.0500 | 0.1400 | number |
| SOIL_MASS_100C | numeric(1) | range | 4.3000 | 5.4600 | grams |
| MOISTURE_100C | numeric(1) | range | 0.0700 | 0.2000 | number |
3. TN02103 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1) | range | 3.0000 | 3.0000 | number |
| YEAR | numeric(1) | range | 1999.0000 | 1999.0000 | year (yyyy) |
| FRACTION | varchar | enum | |||
| TREAT | varchar | enum | |||
| AVG_C | numeric(1) | range | 0.4400 | 37.0200 | milligrams per gram |
| AVG_N | numeric(1) | range | 0.0200 | 0.8200 | milligrams per gram |
4. TN02104 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1) | range | 4.0000 | 4.0000 | number |
| COLLDATE | datetime | freetext | |||
| DEPTH | varchar | enum | |||
| TREAT | varchar | enum | |||
| DON | numeric(1) | range | 0.0000 | 2.5500 | milligrams per liter |
| TDN | numeric(1) | range | 0.0000 | 6.1800 | milligrams per liter |
| NO3 | numeric(1) | range | 0.0000 | 14.1400 | milligrams per liter |
| NH4 | numeric(1) | range | 0.0000 | 0.5800 | milligrams per liter |
| DOC | numeric(1) | range | 0.0000 | 16.9000 | milligrams per liter |
5. TN02105 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1) | range | 5.0000 | 5.0000 | number |
| YEAR | numeric(1) | range | 2006.0000 | 2010.0000 | year (yyyy) |
| PLOT | varchar | enum | |||
| TREAT | varchar | enum | |||
| ENZYME | varchar | enum | |||
| ACTIVITY | numeric(1) | range | 0.0000 | 35.0000 | millimol per hour per gram |
Attribute definitions
- ACTIVITY
- millimols enzyme activity per gram*hour
- AVG_C
- average mg C per gram of soil
- AVG_N
- average mg N per gram of soil
- COLLDATE
- date of collection
- DBCODE
- Database Code (assigned by FSDB data manager)
- DEPTH
- Lysimeter depth
- DOC
- dissolved organic carbon
- DON
- dissolved organic nitrogen
- ENTITY
- Entity number (data table number)
- ENZYME
- Enzyme measured using ester based assays
- FRACTION
- Density fraction of carbon in g/cm3
- MGC_FRACTION_GSOIL_ALL
- milligrams of C in fraction per gram of bulk soil
- MGC_GSOIL_FRACTION
- millgrams of C per gram of subsample fraction
- MGN_FRACTION_GSOIL_ALL
- milligrams of N in fraction per gram of bulk soil
- MGN_GSOIL_FRACTION
- milligrams of N per gram of subsample fraction
- MOISTURE_50C
- moisture of the soil sample dried at 50 degrees C (soil_mass_wet - soil_mass_50c/soil_mass_50c)
- MOISTURE_100C
- moisture of the soil sample dried at 100 degrees C (soil_mass_wet - soil_mass_100c/soil_mass_100c)
- NH4
- ammonium
- NO3
- nitrate
- PCT_C_ALL
- Average %C in all soil fractions of the soil sample
- PCT_C_FRACTION
- Percent C in the dried subsample fraction
- PCT_N_ALL
- Average %N in all soil fractions of the soil sample
- PCT_N_FRACTION
- Percent N in the dried subsample fraction
- PLOT
- Plot Code
- SAMPLE
- randomly assigned sample number to determine uniqueness of dataset
- SAMPLE_NO
- Sample Code
- SOIL_MASS_50C
- mass of the soil sample dried at 50 degrees C
- SOIL_MASS_100C
- mass of the soil sample dried at 100 degrees C
- SOIL_MASS_DRY
- Dry mass of soil sample at 50 degrees celcius
- SOIL_MASS_FRACTION
- Dry mass of soil subsample fraction at 50 degrees celcius
- SOIL_MASS_WET
- Mass of soil sample prior to drying
- TDN
- total dissolved nitrogen
- TREAT
- Treatment
- YEAR
- Year of sampling
Enumerated domains
Enumerated domain for attribute: DBCODE
| Code | Description |
|---|---|
| TN021 | FSDB database code TN021 |
Enumerated domain for attribute: FRACTION
| Code | Description |
|---|---|
| 1.65 | 1.65 g/cm3 density fraction of carbon |
| 1.85 | 1.85 g/cm3 density fraction of carbon |
| 2.4 | 2.4 g/cm3 density fraction of carbon |
| 2.65 | 2.65 g/cm3 density fraction of carbon |
| >2.65 | >2.65 g/cm3 density fraction of carbon |
| 2.0 | 2.0 g/cm3 density fraction of carbon |
Enumerated domain for attribute: PLOT
| Code | Description |
|---|---|
| DIRT_01 | HJA DIRT Plot 01 |
| DIRT_02 | HJA DIRT Plot 02 |
| DIRT_03 | HJA DIRT Plot 03 |
| DIRT_04 | HJA DIRT Plot 04 |
| DIRT_05 | HJA DIRT Plot 05 |
| DIRT_06 | HJA DIRT Plot 06 |
| DIRT_07 | HJA DIRT Plot 07 |
| DIRT_08 | HJA DIRT Plot 08 |
| DIRT_10 | HJA DIRT Plot 10 |
| DIRT_11 | HJA DIRT Plot 11 |
| DIRT_12 | HJA DIRT Plot 12 |
| DIRT_13 | HJA DIRT Plot 13 |
| DIRT_14 | HJA DIRT Plot 14 |
| DIRT_16 | HJA DIRT Plot 16 |
| DIRT_17 | HJA DIRT Plot 17 |
| DIRT_19 | HJA DIRT Plot 19 |
| DIRT_49 | HJA DIRT Plot 49 |
| DIRT_69 | HJA DIRT Plot 69 |
Enumerated domain for attribute: TREAT
| Code | Description |
|---|---|
| 2x litter | Double litter - aboveground inputs are doubled by adding litter from No Litter plots. |
| 2x wood | Double wood - woody inputs are doubled by dding shredded course woody debris. |
| control | Control - normal litter inputs are allowed. |
| no input | No Inputs - combined treatments from No Litter and No Roots treatments. |
| no root | NoRoots - roots are excluded by inserting barriers around plots in backfilled trenches. |
| no litter | No Litter - Aboveground inputs are prevented by seasonal removals. |
Enumerated domain for attribute: DEPTH
| Code | Description |
|---|---|
| 30 | 30 cm depth |
| 100 | 100 cm depth |
Enumerated domain for attribute: ENZYME
| Code | Description |
|---|---|
| Phosph | Phosphatase |
| BetaGlucos | Beta Glucose |
| PhenolOxy | Phenol Oxidase |
| Proteinase | Proteinase (also termed protease or peptidase) |