soil map units where 31A Nausori is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu |
| Landscape position | Terraces of the major floodplains in the lowlands and foothills |
| Soil parent material | river alluvium from basic and intermediate rocks |
| Slope | Flat to near level (0-2°). Commonly smooth microrelief but hummocky when overlying peat at depth. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-16cm clay loam. 16-28cm silty clay loam. 28-93cm clay loam. 93-118cm fine sandy clay. |
| Minimum effective rooting depth | <50cm. Note high seasonal water table. |
| Soil pH (acidity) | 0-28cm strongly acid. 28-93cm moderately acid. 93-110cm strongly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Low potassium (K). |
| Soil moisture regime | aquic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Very poorly drained. |
| Susceptibility to waterlogging | In normal years the water table fluctuates from at the surface (summer) to 50cm (winter) but where drained to below 100cm in winter. |
| Susceptibility to flooding | Due to near permanent high water table throughout the year surface flooding can occur for >200 days. 1 in 25 year return period for floods depositing sediment. |
