Numerical simulation of oasis-desert interaction

Based on a simplified dynamic model and the entropy balance equation, by de scribing the energy and moisture exchange between oasis and desert, the cha racteristics of the oasis-desert interaction are studied dynamically and th ermodynamically. The dependence of the oasis evaporation rate on the oasis wetness and the oasis scale is revealed. The results show that the oasis sc ale and oasis wetness are two key dominant factors controlling the cold isl and effect. A smallest critical oasis scale for maintaining and developing oasis is obtained.