W. central Taiwan soilscape is characterised by soil and landform diversity.
Soil chronosequence Entisol → Inceptisol (Endoaquept)→ reddish Inceptisol (Dystrudept)→ Ultisol → Oxisol with time constraints.
Using weighted profile development index (WPDI) to assess the progressive pathway of soil development.
Relationship between soil distribution and soil genesis illustrates the paleo-environment of the fluvial system in the area.