Table 2. Environmental factors before submergence (September 2008) and after submergence (June 2009) (mean±SE) at three elevation intervals (i.e., 145–155m, 155–165, 165–175m).
| pH | Bulk density (g cm-3) | Soil water content (%) | Relative elevation (m) | Flooding duration (day) | |
|---|---|---|---|---|---|
| Before submergence | |||||
| 145–155 m (n = 22) | 7.65±0.05a | 1.69±0.04a | 21.46±1.93a | 3.29±0.91c | |
| 155–165 m (n = 22) | 7.43±0.12a | 1.64±0.05a | 19.87±1.28a | 15.29±0.78b | |
| 165–175 m (n = 24) | 7.34±0.14a | 1.60±0.05a | 19.33±1.47a | 23.57±1.57a | |
| Mean (n = 68) | 7.47±0.07B | 1.65±0.03A | 20.19±0.91A | ||
| After submergence | |||||
| 145–155 m (n = 22) | 8.15±0.04a | 1.44±0.04a | 18.14±1.44a | 3.29±0.91c | 261±7a |
| 155–165 m (n = 22) | 7.95±0.16a | 1.45±0.03a | 18.65±1.84a | 15.29±0.78b | 146±5b |
| 165–175 m (n = 24) | 8.02±0.15a | 1.49±0.04a | 16.37±1.37a | 23.57±1.57a | 79±14c |
| Mean (n = 68) | 8.04±0.07A | 1.46±0.02B | 17.68±0.89A | ||
Lowercase letters (a, b and c) demonstrate the effects of elevation on soil characteristics with significances at α = 0.05 level (tested by Multi-way ANOVA), uppercase letters (A and B) represent the effect of sampling time on soil characteristics with significant differences at α = 0.05 level (reflected by Paired-T test).