永川区城市时空扩展动力机制研究

Research on Dynamic Expansion and Impetus Mechanism of Yongchuan District

以重庆市永川区为例,根据2000—2009年间的卫星遥感影像,开展永川区城市扩展变化研究,并探讨其城市扩展的驱动力机制。研究提出:人口和经济的快速增长是永川城市扩展的根本动力;山地城市的自然环境特征对城市扩展起着重要的制约作用;城市规划和政策本身并不是城市扩展的直接动力,但对城市空间扩展起到了重要的引导和控制作用;交通发展对城市的延伸扩张有着很大的推动作用;各种因素相互耦合,相互促进或制约,共同作用于城市空间扩展。

According to the remote sense images obtained by satellites during 2000-2009,the urban expansion of Yongchuan and its impetus mechanism is researched.The research proposes that： the rapid growth of population and economy is the fundamental driving force of urban expansion of Yongchuan;the mountainous characteristics play an important restrictive role in the urban spatial expansion;urban planning and policies are not the direct driving force of expansion,but it has played an importantly directing and controlling role in urban spatial expansion;transportation development plays a significant role in promoting the urban spatial expansion;finally,various factors are coupling,promoting or restricting each other,which affect the urban spatial expansion together.