The term ñadi is used to refer to a specific type of soil or as a phytogeographic zone of Southern Chile. The soil type called ñadi in edaphology is defined by the presence of an impermeable layer, usually called "fierrillo". In phytogeography ñadis are located in the Chilean Central Valley of Los Lagos Region, specifically between the moraines or the last glaciation (Llanquihue glaciation) and those of the penultimate glaciation (Santa María glaciation).
- Ramírez, Carlos; Mac Donald, Roberto; San Martín, Cristina (March 1996). "Uso forestal de los ecosistemas de «ñadi»: Riesgos ambientales de la transformación de suelos en la Región de Los Lagos" (PDF). Ambiente y Desarrollo. XII (1): 82–88. Retrieved 16 April 2018.