Soil Erodibility


Brief characteristic of soil groups. After Yamamoto et al. 1973.

Group

Mountain Range

Rainfall

[mm/yr]

Elevation [m]

Parent Geologic Material

Soil Group*

Vegetation

A Koolau >2300 (continuously wet) >365 Basalt or basalt colluvium Hydrol humic latosol Uluhe fern (Dicranopteris linearis)
B Koolau >2300 (wet) <275 Basalt or basalt colluvium Humic latosol Uluhe fern (Dicranopteris linearis), grass complex, kukui (Aleurites moluccana)
C Koolau >2300 (continuously wet) >365 Ash Hydrol humic latosol Kukui (Aleurites moluccana)
D Koolau <1650 (moderately wet) >365 Ash Regosol Grass complex
E Koolau <1650 (moderately wet) <275 Basalt Humic latosol Grass complex
F Waianae <1650 (wet and dry) >365 Basalt colluvium Humic ferruginous latosol Grass complex, silk oak (Grevillea robusta), kukui (Aleurites moluccana)
G Waianae <1650 (moderately wet) >365 Ash Regosol Silk oak (Grevillea robusta), grass complex.
H Waianae <1650 (wet and dry) <275 Basalt Humic ferruginous latosol Grass complex
* Soil groups are named according to the soil classification system of Cline et al. (1955)