TABLE 1.
Biogeochemical parameters of HID soils as measured in November 2005a
| Site | Soil depth (cm) | Moisture (%) | LOI (%)b | NH4+-N content (mg kg−1) | NO3−-N content (mg kg−1) | Denitrification potential (mg N2O-N/kg of soil/h)c |
|---|---|---|---|---|---|---|
| UND | 10 (2-15) | 43.8 (0.6) | 16.71 | 9.9 (0.9) | 6.8 (0.5) | 0.51 (0.14) |
| R89 | 6 (1-17) | 59.6 (2.4) | 14.38 | 46.9 (1.9) | 3.1 (0.5) | 0.48 (0.14) |
| R97 | 5 (3-11) | 58.8 (4.5) | 14.19 | 49.5 (10.8) | 1.8 (0.6) | 1.01 (0.27) |
| R00 | 3 (1-4) | 48.3 (1.4) | 23.90 | 25.1 (7.7) | 7.8 (2.8) | 0.12 (0.03) |
| R01 | 3 (1-7) | 41.6 (1.1) | 23.58 | 15.2 (5.1) | 6.5 (2.8) | 1.15 (0.33) |
| R03 | 1 (0-3) | 43.5 (10.1) | 18.86 | 26.9 (9.2) | 5.1 (2.8) | 0.77 (0.11) |
a
Values in parentheses are standard deviations of the mean of three replicate samples.
b
LOI is a surrogate for organic matter content.
c
Potential denitrifying enzyme activity.