Study on natural disaster prevention countermeasures for Western Valley City from the perspective of city planning: a case of Lanzhou city

摘要

For a long time, the Western Valley Cities(WVC) had suffered serious threats from several natural disasters, and integrated prevention natural disasters has been a primary issue to their sustainable development and inhabitation environment construction. As a significant public policy for conducting city development and guaranteeing public safety, city planning serves an irreplaceable function in WVC natural disasters integrated prevention. Take Lanzhou city as a WVC example, the paper firstly analyzing its main natural disasters that include earthquake, flood, sandstorm and geological disasters. Further, it systematically summarizes their four typical characteristics, which are forceful relevance with geographical environment, higher disasters continuous occurrence, stronger amplifying nature of disaster losses and higher costs and difficulties of rescues and reconstructions. Finally, from four aspects that are improving legal status of disasters integrated prevention planning, establishing a rational optimal allocation model of city land-use, building a multilevel natural disaster prevention system and constructing prevention disaster communities, it puts forward natural disasters integrated prevention countermeasures for WVC based on the perspective of city planning.