This equation can be used for predicting the change of vegetation coverage according to the variability
of climate (the precipitation and potential evaporation). The landscape parameter n can be estimated, and
then the catchment actual evapotranspiration can be estimated. By this way, through combining the
Eagleson’s model and the Budyko’s model, the change of the catchment water balance due to the climate
and vegetation variability can predicted. Taking the Hai River basin for example, the new climatevegetation-water
cycle prediction model would be as following: