TABLE 2.
Soil chemical and microbiological characteristics of six natural forest soilsc
| Forest type | Site | pH (CaCl2)d | Organic C (%) | Total soil N (%) | C/N ratio | Microbial biomass (μg/g of organic C)
|
PLFAs
|
||
|---|---|---|---|---|---|---|---|---|---|
| FE-Na | SIR-Cb | Total nmol/g of organic C | Bacterial/ fungal | ||||||
| Oak-hornbeam | Johannser Kogel | 5.0 (0.1) | 5.60 (0.56) | 0.34 (0.03) | 16.07 (0.54) | 1.27 (0.12) | 10.66 (0.86) | 5.11 (0.36) | 17.66 (1.42) |
| Kolmberg | 5.7 (0.3) | 4.93 (0.28) | 0.26 (0.02) | 18.92 (0.52) | 1.60 (0.40) | 15.88 (2.70) | 4.98 (0.36) | 18.42 (1.39) | |
| Spruce-fir-beech | Rothwald | 5.2 (0.3) | 21.44 (2.98) | 0.88 (0.12) | 24.55 (1.58) | 1.90 (0.20) | 14.98 (2.38) | 4.46 (0.46) | 26.99 (1.89) |
| Neuwald | 4.1 (0.2) | 9.90 (0.84) | 0.42 (0.03) | 23.44 (0.72) | 1.21 (0.16) | 12.02 (1.10) | 4.64 (0.27) | 33.17 (2.69) | |
| Austrian pine | Stampfltal | 7.5 (0.0) | 17.73 (1.37) | 0.43 (0.08) | 57.07 (10.64) | 0.56 (0.12) | 3.10 (0.30) | 1.74 (0.21) | 7.99 (0.73) |
| Merkenstein | 7.6 (0.0) | 10.67 (0.70) | 0.21 (0.02) | 52.84 (4.47) | 0.57 (0.07) | 3.42 (0.45) | 2.41 (0.18) | 5.73 (0.35) | |
a
Microbial biomass N measured by chloroform fumigation-extraction.
b
Microbial biomass C measured by substrate-induced respiration.
c
Values represent means of 10 subsamples; values in parentheses are standard errors.
d
Measured in 0.01 M CaCl2.