soil map units where 8A Tacilevu is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | All islands |
| Landscape position | Beach dunes of the coastal margins |
| Soil parent material | calcareous sand |
| Slope | Flat to gently undulating (0-1°). Hummocky microrelief due to windthrow.. |
| Surface outcrops | No surface rock outcrops. Few surface coral stones. |
| Brief soil profile description | - |
| Soil profile texture | 0-46cm shelly sandy loam. 46-81cm stony sandy loam. 81-100cm stony coarse sand. On cemented beach rock. |
| Minimum effective rooting depth | <100cm. Wet season subsoil waterlogging and low nutrient status below 16cm. |
| Soil pH (acidity) | 0-16cm moderately alkaline. 16-100cm strongly alkaline. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Available phosphorus (P) and potassium (K) very low. Organic carbon (C) and nitrogen (N) very low below 16cm. |
| Soil moisture regime | udic/perudic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Poorly drained. |
| Susceptibility to waterlogging | Perched water table. In normal years waterlogging may occur for up to 60 days sometime in the period November to April. |
| Susceptibility to flooding | Never flooded. Subject to wave encroachment during severe storm events. |
