摘要
以国家公布的集中连片特殊困难地区之一的秦巴山区为例,运用GIS网络分析技术,系统分析了其与特大城市、地级城市和县城联系的交通可达性空间特征。并以县为基本单元,使用空间回归分析模型,揭示了与不同层级城市联系的交通可达性对人均GDP和城镇化率的影响。结果表明:秦巴山区交通可达性呈现以由县城驻地或地级市驻地向外围衰减的空间特征,与特大城市、地级城市联系的交通可达性均呈现出"西北和东南角差"的大格局;与县城联系的便捷程度对秦巴山区的经济发展水平影响不显著,人均GDP主要受到与特大城市和地级市联系的交通可达性的影响,可达性越好,人均GDP越高;与特大城市、地级城市和县城联系的交通可达时间对县城城镇化率的影响均不显著,这在一定程度上表明贫困山区的县由于经济发展的内在动力弱,经济发展水平低,服务能力不足,使得其难以有效发挥农副产品消费地和工业生产集聚中心职能,对其腹地的辐射带动与人口吸纳效应弱。
This paper discusses the spatial characteristics of the accessibility affected by cities of different scales（mega city, prefecture-level city, county-level city） in Qin Ba mountain areas, which is one of the Poverty-stricken Mountainous areas areas promulgated by the state, using methods of GIS network analysis technology. Moreover, the paper reveals the accessibility of different scales and its impacts on the Real GDP per capita, urbanization rate using methods of Spatial Regression Model based on county as the basic unit. The findings indicate that the spatial characteristic of accessibility of Qin Ba mountain areas is＂circling structure＂. The farther the distance away from the center city, the worse the accessibility is. And the accessibility affected by the mega city and the prefecture-level city are relatively similar, forming a pattern of＂weak northwest and southeast＂. The accessibility affected by county-level city has no significant effect on levels of economic development in Qin Ba mountain areas. The Real GDP per capita is mainly affected by the accessibility of mega city and prefecture-level city. The better the accessibility, the higher the Real GDP per capita. While the urbanization rate affected by the accessibility of mega city, prefecture- level city and county- level city is not significant, which indicates that county in Poverty-stricken Mountainous Areas are weak in the inherent motive force of economic development, and the low level of economic development, the insufficient of public service level, which make it difficult to play a role as the agricultural products consumption and industrial production center effectively, the influence on the hinterland and the drawing capacity of population is weak.
出处
《经济地理》
CSSCI
北大核心
2016年第1期156-164,共9页
Economic Geography
基金
中央高校基本科研业务费专项资金(GK201303006
Gk261002143)
国家自然科学基金项目(41171139
41401127)
关键词
交通可达性
贫困山区
不同层级城市
空间回归
accessibility
poverty-stricken mountainous areas
cities of different scales
spatial regression
