A Theoretical Analysis on the Local Climate Change Induced by the Change of Landuse

The local climate change induced by the change of landuse, i.e., the degeneration of vegetation is studied by the consideration of the equilibrium among radiation, phase change and convection in an air column and the energy balance condition on the ground surface. The result shows that the increase of ground albedo and the change of the surface heat flux as well as the decrease of the surface roughness length may induce the decrease of precipitation and the increase of temperature in the northern China, similar to the numerical simulation. Considering advection, this conclusion is also true except the amounts of the decrease of precipi tation and the increase of temperature are changed. The decrease of precipitation and the increase of temperalure will be more serious in case of global warming.