Abstract: Owing to the heat of the surface of the Lake is different from of the surface of the land and the existing of physical change on steaming and rfozing, the climate of yanqi Basin is obviously regulated by Bosten Lake, Such as, the humidity of the atmosphere and quantities of the precipitation are increased Whine the evaporation is reduced.
The shallow parts of the climate effects of Bosten Lake is only limited within Yanqi Basin The farther the distance to the shore of the Lake becomes, the poorer the effect strengthens.
The environmental meaning on the climate effect of Bosten Lake is that the Clmate of Bosten Lake directly affects in tourism, trade high way transportation and other humam activities；affects soil. the characteristics of the water, the formation of living things and the formation of good agricuctural resourcs and economy.