SP004

Attributes in entity 1: Soil Characteristics and Microbial Variables - Full set		Details
1. STCODE Definition: Database code Domain: enum
2. FORMAT Definition: Entity number Units: number Domain: range (minimum = 1.  maximum = 1.)
3. SITE Definition: Permanent trace gas sites Domain: enum
4. DATE Definition: Date samples collected (yyyymmdd) Units: date as date type Domain: range (minimum = Jul 13 1992  maximum = Jul 7 1993)
5. SAMPLOCA Definition: Location along transect where sample is taken Domain: freetext
6. PH Definition: pH Units: pH units Domain: range (minimum = 3.60  maximum = 5.94)
7. P_MOIST Definition: Percent moisture (wet-dry/dry)x100 Units: percent Domain: range (minimum = 17.6  maximum = 200.3)
8. F_DRY_WT Definition: Wt fraction dry/wet wt soil Units: number Domain: range (minimum = 0.333  maximum = 0.850)
9. SOM Definition: Percent soil organic matter in mineral soil (by combustion at 550 C) Units: percent Domain: range (minimum = 7.4  maximum = 89.3)
10. EXTR_AMM Definition: Concentration of ammonium n extracted with 2m KCl Units: micrograms per gram Domain: range (minimum = 0.000  maximum = 4.965)
11. MIN_N Definition: Concentration ammonium n after incubation at 40 deg. C for 7 days Units: micrograms per gram Domain: range (minimum = 2.50  maximum = 147.82)
12. DOC_SOIL Definition: Dissolved organic carbon extracted from soils (as C) Units: micrograms per gram Domain: range (minimum = 0.3  maximum = 787.2)
13. LAB_RESP Definition: CO2 released from soils incubated at 15 deg. C Units: micromoles per gram per hour Domain: range (minimum = 0.003  maximum = 1.853)
14. N2OCONS Definition: Nitrous oxide consumed by soils Units: nanomoles per gram per day Domain: range (minimum = -0.438  maximum = 3.580)
15. METHCONS Definition: Methane consumption rates from soils Units: nanomoles per gram per hour Domain: range (minimum = -0.06  maximum = 7.36)
16. DENITPOT Definition: Denitrification potential Units: nanomoles per gram per hour Domain: range (minimum = 0.030  maximum = 127.290)
17. METHPROD Definition: Methane production Units: nanomoles per gram per hour Domain: range (minimum = 0.12  maximum = 5.05)
18. FLD_RESP Definition: Forest floor respiration (g CO2) Units: grams per square meter per day Domain: range (minimum = 0.09  maximum = 3.35)
19. LIT_RESP Definition: Litter respiration (g CO2) Units: grams per square meter per day Domain: range (minimum = 0.00  maximum = 2.18)
20. LIT_RESP_P Definition: Percent litter respiration Units: percent Domain: range (minimum = 0.00  maximum = 140.06)
21. BULKDENS Definition: Bulk density of soil Units: grams per cubic centimeter Domain: range (minimum = 0.08  maximum = 1.02)
22. MASS_LIT Definition: Mass of litter on a square meter basis Units: kilograms per square meter Domain: range (minimum = 0.66  maximum = 25.80)
23. AIRTEMP Definition: Mean of air temperatures taken at the start and end of field respiration Units: degrees Celsius Domain: range (minimum = 5.5  maximum = 31.0)
24. SOILTEMP Definition: Mean of soil temperatures taken at the start and end of field respiration Units: degrees Celsius Domain: range (minimum = 8.5  maximum = 19.5)