soil map units where 22S Alataua steepland soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Savaii |
| Landscape position | Soils of the lowlands and foothills - very slightly dissected landscapes |
| Soil parent material | from mainly scoria of the Puapua Volcanics |
| Slope | Very steep slopes |
| Surface outcrops | Very rocky. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 5cm very bouldery clay loam. 8cm clay loam in rock crevices. on boulders and blocks of vesicular basalt |
| Minimum effective rooting depth | <15cm |
| Soil pH (acidity) | Moderately acid (pH = pH = 5.8) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderately fertile |
| Soil moisture regime | With weak to strong dry season (Udic moisture regime) |
| Susceptibility to drought | Moderate to strong dry season (3 months <60mm rainfall). Rainfall 2250-2500mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
