Table 1.
Characteristics of sampling sites, soil properties, and sequencing information in samples from the Hailuogou Chronsequence.
| Site code | Succession time (years) | Horizontal distance *(m) | Litter thickness (cm) | DOC (mg kg−1) | TN (mg kg−1) | NH4–N (mg kg−1) | NO3–N (mg kg−1) | SMBN (mg kg−1) | SMBC (mg kg−1) | Sequencing coverage | Average OTUs number | Number of sequences |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GC2 | <2 | <100 | <1 | 14.5 ± 4.19 | 751.9 ± 106.6 | 5.52 ± 0.02 | 2.6 ± 0.3 | 3.78 ± 1.72 | 18.8 ± 3.5 | 0.97 ± 0.02 | 78 ± 25 | 3, 880 ± 1, 683 |
| GC18 | 18 | 200 | <1 | 32.6 ± 9.6 | 324.1 ± 65.4 | 6.02 ± 0.51 | 2.9 ± 0.7 | 6.41 ± 2.61 | 35.9 ± 14.6 | 0.96 ± 0.01 | 66 ± 30 | 3, 214 ± 1, 806 |
| GC38 | 38 | 370 | 5 | 43.8 ± 1.5 | 648.9 ± 17.9 | 7.82 ± 0.62 | 20.6 ± 6.0 | 11.3 ± 4.60 | 60.1 ± 24.6 | 0.94 ± 0.00 | 90 ± 21 | 3, 366 ± 1, 101 |
| GC68 | 68 | 900 | 10 | 122.2 ± 54.4 | 968.0 ± 52.1 | 9.35 ± 0.73 | 24.8 ± 10.3 | 30.7 ± 12.5 | 116.4 ± 47.5 | 0.94 ± 0.02 | 81 ± 27 | 5, 521 ± 1, 001 |
| GC110 | 110 | 1,500 | 15 | 629.8 ± 266.2 | 1, 349.1 ± 269.7 | 53.6 ± 20.4 | 2.2 ± 0.3 | 101.6 ± 41.5 | 506.9 ± 206.9 | 0.96 ± 0.01 | 67 ± 24 | 7, 011 ± 1, 033 |
| GC188 | 188 | 2,000 | 17 | 523.1 ± 187.1 | 1, 980.1 ± 190.3 | 79.8 ± 29.4 | 6.9 ± 1.2 | 99.2 ± 40.5 | 437.9 ± 178.6 | 0.96 ± 0.02 | 81 ± 24 | 4, 487 ± 2, 002 |
Presented values of soil properties are mean ± SD (samples per group n = 6). DOC, Dissolved organic carbon; TN, Total nitrogen; NH4–N, Ammonia; NO3–N, Nitrate; SMBN, Soil microbial biomass nitrogen; SMBC, Soil microbial biomass carbon.
*
Horizontal distance refers to the distance to the end of glacier.