Table 1. AGB, BGB and R:S ratios of plant communities in desertified steppe.
| Plant communities | Sample size | AGB/(gm−2) | BGB/(gm−2) | R:S | ||
|---|---|---|---|---|---|---|
| Mean | Median | Range | ||||
| Stipa bungeana | 15 | 224.9 ± 23.6 b | 335.7 ± 56.9 b** | 1.5 c | 1.3 | 0.5–2.6 |
| Agropyron mongolicum | 15 | 114.8 ± 15.8 c | 184.1 ± 29.8 d** | 1.6 c | 1.1 | 0.7–2.1 |
| Glycyrrhiza uralensis | 15 | 43.9 ± 6.9 e | 198.5 ± 23.7 d** | 4.5 a | 2.5 | 1.9–6.8 |
| Sophora alopecuroides | 15 | 54.4 ± 8.2 d | 262.6 ± 32.1 c** | 4.8 a | 3.2 | 2.3–7.3 |
| Artemisia ordosica | 15 | 300.6 ± 38.7 a | 682.6 ± 53.2 a** | 2.3 b | 1.7 | 1.4–5.1 |
| Cynanchum komarovii | 15 | 54.4 ± 9.5 d | 80.7 ± 8.7 e** | 1.5 c | 0.9 | 0.4–3.6 |
| Mean | 90 | 132.2 ± 17.1 | 290.7 ± 34.1** | 2.7 | – | 0.4–7.3 |
Notes.
Values followed by lowercase letters within columns are significantly different at the 0.05 level based on Tukey’s method, n = 15 here and subsequently.
**
means AGB and BGB were significantly different (p < 0.01).