Abstract
A numerical model based on the System Dynamics was established to prospect the global environment in a time span of forthcoming 50 years. The model deals with global air temperature, CO2 concentration, forest stock and human society through the economic activity as the main variables. In the model, so-called CO2 emission right that will be introduced in near future in the diplomatic circle between developed and under developing counties is also considered. One of the features slightly differs from former analogous studies is providing all information at readers’ hand in our web-site that is requisite to consist the model, in short, a set of quoted, derived or assumed equations and basic data.