soil map units where 34S Vaipapa steepland soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Savaii |
| Landscape position | Soils of the lowlands and foothills - strongly dissected landscapes |
| Soil parent material | from pahoehoe, aa, scoria and dykes of basalt of the Fagaloa Volcanics |
| Slope | Steep slopes |
| Surface outcrops | Surfaces somewhat bouldery. |
| Brief soil profile description | - |
| Soil profile texture | 13cm slightly stony clay. 33cm rubbly clay. on weathering andesitic basalt |
| Minimum effective rooting depth | <50cm |
| Soil pH (acidity) | Moderately acid (pH = pH = 5.8) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate fertility. Base saturation 50-60%. Base saturation, organic carbon (C) and exchangeable potassium (K) values moderate to low values in topsoil. |
| Soil moisture regime | With weak to strong dry season (Udic moisture regime) |
| Susceptibility to drought | Weak dry season (1-2 months <100mm rainfall). Rainfall 2750-3500mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
