City is a center of politics,economy and culture of nation and region. It has densely populate,social influence,concentrated property and wealth. The urban development in the western China influences prosperity of western region and the progress of Western Great Exploitation. Along with the progress of western great exploitation and development of western region,sensitivity and frangibility of ecosystem will be more prominent. So, researching disaster prevention of western city,reacting deliberately to the threat of urban nature disaster and reducing the loss in which urban disasters resulted as low as possible will be more important. Firstly,this paper collects the pertinent literature and data,sorts the information about major natural disaster in the western China,and on the basis of the disaster science and urban disaster prevention science,analyzes causation and evolution and hazards of these disaster. Secondly,compared with urban major natural disaster of other region,summarized the specialties of the western urban disaster,and according to the actual circumstance of western cities,this paper proposes harness countermeasures. Finally,this paper studies western urban disaster prevention planning as viewed from urban land evaluation,urban green space system and urban disaster prevention space planning. Along with the rapid development of society and economic of westen cities,western urban disaster prevention and reduction will be more valued, and the status of urban disaster prevention planning in the system of urban planning will also be raised to an unprecedented position. And then,the study on western urban disaster prevention and reduction will be more scientific,rational,normative and comprehensive,too. |