The main reason of stone desert formation in the upper reaches of Beiru River- a tributary of the Huai River, is that tuff break up when watering.

Holes and pore space of limestone, heavy rainfall, soil loss, the topography of slope and the destroy on forests imposed by humankind were the main causes of lithification in karst area.

The main reasons of Karst rocky desertification formation are the artificial unreasonable activities and frail ecological environment in the Karst mountainous area according to the research results.