Table 2. Paired t test values for effect on soil texture (clay, silt, sand) between vegetation restoration type and the control.
| Set | Soil texture | 0–30 cm | 0–10 cm | 10–20 cm | 20–30 cm |
|---|---|---|---|---|---|
| NS–CK1 | Clay | ||||
| Silt | |||||
| Sand | |||||
| EF–CK2 | Clay | − | − | − | |
| Silt | + | ++ | + | ||
| Sand | + | ||||
| PF–CK3 | Clay | ||||
| Silt | |||||
| Sand | |||||
| ZF–CK4 | Clay | −− | − | − | − |
| Silt | ++ | + | + | + | |
| Sand | ++ | + | + | ||
| JC–CK5 | Clay | −− | −− | − | |
| Silt | −− | −− | − | − | |
| Sand | ++ | ++ | + | ||
| TG–CK6 | Clay | ||||
| Silt | |||||
| Sand |
Note:
++ or −−: Difference is significant at P < 0.01 level in double-tailed t test. +or− : Difference is significant at P < 0.05 level in double-tailed t test. + indicates a significant increase and − indicates a significant decrease, empty shows no significant change. NS, natural shrubland; EF, Eucalyptus robusta economic forest; PF, Prunus salicina economic forest; ZF, Zenia insignis economic forest; JC, Juglans regia-crop mixed forest; TG, Toona sinensis-Pennisetum purpureum mixed forest. n = 3 in every soil layer, n = 9 in total soil layer (0–30 cm) for 6 restoration types except for EF, which n = 4 in every soil layer and n = 12 in total soil layer (0–30 cm). The same below.