SP033

Attributes in entity 4: Soil evironmental and physical characteristics		Details
1. DBCODE Definition: Database Code Domain: enum
2. ENTITY Definition: Entity number Units: number Domain: range (minimum = 4.  maximum = 4.)
3. DATE Definition: Date of measurement Units: date as date type Domain: range (minimum = Jul 30 2008  maximum = Jul 30 2008)
4. MAT_NON Definition: Mat or non-mat soil type Domain: enum
5. CORE_ID Definition: ID for soil core (different from respiration plot) Domain: enum
6. DEPTH Definition: Depth of core Domain: enum
7. LITTER_DEPTH Definition: Total depth (cm) of Oi, Oe, and Oa layers. Units: centimeters Domain: range (minimum = 2.4  maximum = 17.5)
8. CORE_AREA Definition: Cross-sectional area of core (cm2) Units: square centimeters Domain: range (minimum = 50.2  maximum = 78.5)
9. CORE_VOL Definition: Total volume of core (cm3) Units: cubic centimeters Domain: range (minimum = 188.40  maximum = 1373.75)
10. SOIL_WET_MASS Definition: Total mass of field-moist core (g) Units: grams Domain: range (minimum = 20.0  maximum = 1170.0)
11. PH Definition: pH Units: pH units Domain: range (minimum = 3.81  maximum = 6.26)
12. GWC Definition: Gravimetric water content (g water/g dry soil) Units: grams per gram Domain: range (minimum = 0.3094  maximum = 1.5659)
13. PERCENTN Definition: Total nitrogen content, by mass Units: percent Domain: range (minimum = 0.10  maximum = 1.73)
14. PERCENTC Definition: Total carbon content, by mass Units: percent Domain: range (minimum = 2.15  maximum = 48.41)
15. CTON_RATIO Definition: Carbon to nitrogen ratio Units: number Domain: range (minimum = 19.54  maximum = 67.59)
16. FINE_ROOTS Definition: Mass of roots less than 2mm diameter (g water/g dry soil) Units: grams per gram Domain: range (minimum = 0.1407  maximum = 3.2688)
17. THIN1_ROOTS Definition: Mass of roots 2-4 mm diameter (g water/g dry soil) Units: grams per gram Domain: range (minimum = 0.0000  maximum = 1.9816)
18. THIN2_ROOTS Definition: Mass of roots 4-6mm diameter (g water/g dry soil) Units: grams per gram Domain: range (minimum = 0.0000  maximum = 1.9834)
19. THIN3_ROOTS Definition: Mass of roots 6-8mm diameter (g water/g dry soil) Units: grams per gram Domain: range (minimum = 0.0000  maximum = 4.1700)
20. COARSE_ROOTS Definition: Mass of roots >8mm diameter (g water/g dry soil) Units: grams per gram Domain: range (minimum = 0.0000  maximum = 21.9900)
21. TOTAL_ROOTS Definition: Total root mass (g water/g dry soil) Units: grams per gram Domain: range (minimum = 0.3266  maximum = 25.2000)
22. EFFLUX_AVG Definition: Average efflux from 2 or 3 measurements in immediate succession Units: micromoles per square meter per second Domain: range (minimum = 2.134  maximum = 12.030)
23. EFFLUX_SE Definition: Standard error of mean Units: micromoles per square meter per second Domain: range (minimum = 0.078  maximum = 1.100)
24. CO2_AVG Definition: Initial CO2 concentration in soil chamber Units: parts per million Domain: range (minimum = 425.0  maximum = 546.5)
25. TEMP_10CM Definition: Soil temperature at 10cm depth Units: degrees Celsius Domain: range (minimum = 12.90  maximum = 15.90)