兰州市土地利用变化及其社会驱动力研究

Research on the process and social driving forces of land use change in Lanzhou City

以典型河谷型大城市兰州市为例,剖析了其1980—2000年20年来土地利用结构、土地利用动态度和土地利用程度的变化情况;运用灰色关联分析法对土地利用变化的社会驱动力进行了分析.结果表明,由于河谷地形影响,兰州市城市空间扩展受到限制,20年来土地利用虽然处于发展期,但土地利用类型总的变化速度不大;城市化和工业化、人口增长、经济发展是其土地利用变化的主要社会驱动力.

Taking Lanzhou City-a typical valley-basin city as the example, this paper analyzes the changes in land use structure, land use dynamic degree and land use degree index from 1980 to 2000. Then, with the help of grey relevance analysis, the social driving forces of land use change is analysed. The result shows that urban space expansion was being restricted by the valley-basin topography. In recent 20 years, land use was in developing period, but land use types changed small. Citification and industrialization, population growth, economic development are main factors of social driving force of land use change in Lanzhou City.