Definition: | Sampling year | Experimental site (BEF, HBEF, or JB) | Stand name | Stand age (Young, Mid-aged, or Mature) | Nutrient addition regime (Control, N, P, or NP) | Plots 1-4 were randomly assigned a N, P, NP, or Control Treatment. | Respiration collar label. | Core number for each subplot. 2 cores were taken at each respiration collar | Depth range of soil profile roots were taken from. | Root diameter class. Roots were separated based on diameters of <1 mm, 1-5 mm, and 5+ mm groups. | Oven-dry root mass. |
Measurement Values Domain: | | Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | Bartlett | Definition | Bartlett Experimental Forest | Source | |
| Code Definition | Code | JB | Definition | Jeffers Brook | Source | |
| Code Definition | Code | HB | Definition | Hubbard Brook Experimental Forest | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | C1 | Definition | Stand C1 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C2 | Definition | Stand C2 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C3 | Definition | Stand C3 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C4 | Definition | Stand C4 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C5 | Definition | Stand C5 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C6 | Definition | Stand C6 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C7 | Definition | Stand C7 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C8 | Definition | Stand C8 Bartlett Experimental Forest | Source | |
| Code Definition | Code | C9 | Definition | Stand C9 Bartlett Experimental Forest | Source | |
| Code Definition | Code | HBM | Definition | Hubbard Brook Watershed 101 mid-aged stand | Source | |
| Code Definition | Code | HBO | Definition | Hubbard Brook Watershed 101 mature stand | Source | |
| Code Definition | Code | JBM | Definition | Jeffers Brook mid-aged stand | Source | |
| Code Definition | Code | JBO | Definition | Jeffers Brook mature stand | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | Young | Definition | Young stand | Source | |
| Code Definition | Code | Mid | Definition | Mid-aged stand | Source | |
| Code Definition | Code | Old | Definition | Mature stand | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | Control | Definition | Control plot | Source | |
| Code Definition | Code | N | Definition | Nitrogen addition | Source | |
| Code Definition | Code | NP | Definition | Nitrogen and Phosphorous addition | Source | |
| Code Definition | Code | P | Definition | Phosphorous addition | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | 1 | Definition | Plot 1, randomly assigned an N, P, N+P, or Control treatment | Source | |
| Code Definition | Code | 2 | Definition | Plot 2, randomly assigned an N, P, N+P, or Control treatment | Source | |
| Code Definition | Code | 3 | Definition | Plot 3, randomly assigned an N, P, N+P, or Control treatment | Source | |
| Code Definition | Code | 4 | Definition | Plot 4, randomly assigned an N, P, N+P, or Control treatment | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | 1 | Definition | Respiration collar 1. | Source | |
| Code Definition | Code | 2 | Definition | Respiration collar 2. | Source | |
| Code Definition | Code | 3 | Definition | Respiration collar 3. | Source | |
| Code Definition | Code | 4 | Definition | Respiration collar 4. | Source | |
| Code Definition | Code | 5 | Definition | Respiration collar 5. | Source | |
| Code Definition | Code | 6 | Definition | Respiration collar 6. | Source | |
| Code Definition | Code | 7 | Definition | Respiration collar 7. | Source | |
| Code Definition | Code | 8 | Definition | Respiration collar 8. | Source | |
| Code Definition | Code | 9 | Definition | Respiration collar 9. | Source | |
| Code Definition | Code | 10 | Definition | Respiration collar 10. | Source | |
| Code Definition | Code | 11 | Definition | Respiration collar 11. | Source | |
| Code Definition | Code | 12 | Definition | Respiration collar 12 | Source | |
| Code Definition | Code | 3a | Definition | Respiration collar 3a. | Source | |
| Code Definition | Code | 3b | Definition | Respiration collar 3b | Source | |
| Code Definition | Code | 3c | Definition | Respiration collar 3c | Source | |
| Code Definition | Code | 3d | Definition | Respiration collar 3d | Source | |
| Code Definition | Code | 7a | Definition | Respiration collar 7a | Source | |
| Code Definition | Code | A1 | Definition | Respiration collar A1. | Source | |
| Code Definition | Code | C3 | Definition | Respiration collar C3 | Source | |
| Code Definition | Code | I3 | Definition | Respiration collar I3 | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | 1 | Definition | Root core one of two. Two root cores were taken at each respiration collar, except in year 2014. | Source | |
| Code Definition | Code | 2 | Definition | Root core one of two. Two root cores were taken at each respiration collar, except in year 2014. | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | 0-10 | Definition | From 0-10 cm of the soil profile, with 0 cm being the soil surface and 10 cm being 10 cm beneath the soil surface. | Source | |
| Code Definition | Code | 10-30 | Definition | From 10-30 cm of the soil profile. | Source | |
| Code Definition | Code | 10-23 | Definition | From 10-23 cm of the soil profile. | Source | |
| Code Definition | Code | 10-25 | Definition | From 10-25 cm of the soil profile. | Source | |
| Code Definition | Code | 10-26 | Definition | From 10-26 cm of the soil profile. | Source | |
| Code Definition | Code | 10-29 | Definition | From 10-29 cm of the soil profile. | Source | |
| Code Definition | Code | 10-27 | Definition | From 10-27 cm of the soil profile. | Source | |
| Code Definition | Code | 10-28 | Definition | From 10-28 cm of the soil profile. | Source | |
| Code Definition | Code | 10-20 | Definition | From 10-20 cm of the soil profile. | Source | |
| Code Definition | Code | 10-22 | Definition | From 10-22 cm of the soil profile. | Source | |
| Code Definition | Code | 10-24 | Definition | From 10-24 cm of the soil profile. | Source | |
| Code Definition | Code | 10-? | Definition | From 10 cm to an unknown depth of the soil profile. | Source | |
| Code Definition | Code | 10-33 | Definition | From 10-33 cm of the soil profile. | Source | |
| Code Definition | Code | 10-32 | Definition | From 10-33 cm of the soil profile. | Source | |
| Code Definition | Code | 10-21 | Definition | From 10-21 cm of the soil profile. | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | <1 | Definition | Root diameter of less than 1 mm | Source | |
| Code Definition | Code | 1-5 | Definition | Root diameter between 1 and 5 mm | Source | |
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| Unit | gram | Type | real | Min | 0 | Max | 3.28 |
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