THE OPTIMAL CONTROL OF REGIONAL HUMAN-EARTH SYSTEM AND ITS SUSTAINABLE DEVELOPMENT

The optimal control of regional human-earth system is always an important task of modern ge ography. It is also the foundation stone to carry out the sustainable development strategy in market e conomy. The author thinks that the optimal control object of regional human-earth system should be th PDRDEDEDEDSD system instead of the PRED system. During the optimal control of regional human-eart system, man should be taken as the base, man's consciousness construction should be taken as the key and the target is to realize regional sustainable development. The dynamic mechanism of the optim; control of regional human-earth system is to simulate the optimal distance between "man circle" an "earth circle". The spatial structure of the optimal control includes core area, occurrence area, sustair ing area and function area. The competition between each area leads to regional location and spatial ir tergrowth. The optimal control of regional human-earth system includes not only the optimization of a kinds of factors of human-earth system, but also the optimization of all kinds of regions. Only when th above two optimizations are realized, regional conflict can be eliminated, and regional sustainable deve opment and spatial intergrowth can be truly realized.