Table 2.
Mean values of the soil microbiological properties determined in this study. Different letters indicate significant (P<0.05) differences.
| VARIATION | RESP | SIR | DHG | XYL | PROT | PME | SULF | NITRIF | BACT | FUNGI | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Site | IT01 | 0.040 a | 2157 a | 77 a | 3776 a | 427 a | 452 a | 720 a | 0.168 a | 6.36 a | 4.33 a |
| IT02 | 0.057 b | 3910 b | 464 b | 8238 b | 817 b | 391 a | 1240 b | 0.311 a | 7.36 b | 6.38 b | |
| Year | 1993 | 0.048 b | 2047 a | 548 b | 521 b | 130 b | 99 a | 352 a | 0.033 a | 6.68 a | 6.23 a |
| 2000 | 0.059 c | 3749 b | 62 a | 265 a | 60 a | 1097 c | 1523 c | 0.596 a | 7.02 b | 5.19 b | |
| 2010 | 0.040 a | 3305 b | 202 a | 130 a | 75 a | 167 b | 1063 b | 0.089 a | 6.88 b | 4.65 c | |
| Season | Spring | 0.052 b | 2976 a | 284 a | 5065 a | 1268 a | 362 a | 1094 a | 0.111 a | 6.96 b | 5.33 a |
| Autumn | 0.046 a | 3092 a | 257 a | 9950 b | 776 a | 481 b | 865 a | 0.368 a | 6.77 a | 5.38 a | |
Abbreviations: RESP, respiration (mg CO2 [g SOM * h]−1); SIR, substrate-induced respiration (mg CO2 [g SOM * h]−1); DHG, dehydrogenase (μg TPF [g SOM * 16 h]−1); XYL, xylanase (μg glucose [g SOM * 24 h]−1); PROT, protease (μg tyrosine [g SOM * 2 h]−1); PME, acidic phosphatase (μmol pNP [g SOM * h]−1); SULF, sulfatase (μmol pNP [g SOM * h]−1); NITRIF, nitrification (% N d−1); BACT, bacterial numbers (log cfu); FUNG, fungal numbers (log cfu).