Table 1. Summary of environmental parameters analyzed by two-tailed t-test.
| Shrubland | Coniferous forest | P value | |
|---|---|---|---|
| Plant parameters | |||
| Plant species | 12 (5) | 47 (17) | 0.001 |
| Plant diversity | 1.64 (0.01) | 2.64 (0.33) | 0.001 |
| Microbial parameters | |||
| Taxonomic diversity | 248.49 (146.37) | 121.58 (130.59) | 0.035 |
| Functional diversity | 126.19 (0.61) | 124.18 (0.96) | 0.001 |
| Soil microbial biomass carbon (mg/kg) | 1457.39 (315.10) | 1081.40 (247.75) | 0.002 |
| Soil microbial biomass nitrogen (mg/kg) | 169.20 (34.69) | 120.34 (23.52) | 0.001 |
| Soil biogeochemical parameters | |||
| Moisture (%) | 29.73 (2.73) | 45.14 (4.23) | 0.001 |
| Soil temperature (°C) | 12.14 (0.35) | 10.90 (0.50) | 0.001 |
| Air annual average temperature (°C) | 4.62 | 4.00 | n/a |
| Soil organic carbon (mg/kg) | 59981.92 (12469.14) | 63634.61 (16736.75) | 0.793 |
| Labile organic carbon (mg/kg) | 6093.65 (2622.35) | 6441.53 (3422.21) | 0.782 |
| Dissolved organic carbon (mg/kg) | 283.27 (223.28) | 206.90 (93.19) | 0.282 |
| Total nitrogen (mg/kg) | 4447.50 (1059.86) | 4311.82 (852.72) | 0.564 |
| Alkaline hydrolysis nitrogen (mg/kg) | 404.51 (96.69) | 350.57 (79.80) | 0.092 |
| NH4+-N (mg/kg) | 19.29 (3.43) | 15.26 (3.32) | 0.006 |
| NO3−-N (mg/kg) | 11.02 (5.28) | 18.42 (14.44) | 0.147 |
| δ13C (‰) | −25.98 (0.41) | −25.44 (0.26) | 0.001 |
| δ15N (‰) | 4.61 (0.82) | 3.00 (0.76) | 0.001 |
| pH | 4.43 (0.15) | 5.07 (0.48) | 0.001 |
| Rapidly available phosphorus (mg/kg) | 8.39 (0.58) | 11.41 (2.58) | 0.580 |
| Total phosphorus (mg/kg) | 1971.66 (1052.02) | 604.50 (109.59) | 0.001 |
| Total sulfur (mg/kg) | 656.67 (259.32) | 337.57 (72.84) | 0.001 |
| Total potassium (mg/kg) | 4281.21 (777.54) | 4230.07 (1389.61) | 0.739 |
| Al (mg/kg) | 22572.10 (3378.57) | 32555.23 (3378.57) | 0.001 |
| Fe (mg/kg) | 20766.62 (4067.16) | 35420.78 (6583.12) | 0.001 |
| Altitude (m) | 2748.50 (15.89) | 2541.36 (55.38) | 0.001 |
P<0.050 is shown in bold. n/a: not applicable. Values in parenthesis represent standard deviation.