基于ESDA—GIS的县域经济空间差异演化及驱动力分析——以兰州—西宁城镇密集区为例  

Research on Evolutionary Process and Driving Forces of Spatially Economic Disparity Within Counties Based on Technology of ESDA—GIS

作　　者：李丁[1] 冶小梅[1] 汪胜兰[1] 陈强[1] 

机构地区：[1]兰州大学资源环境学院,中国甘肃兰州730000

出　　处：《经济地理》2013年第5期31-36,23,共7页Economic Geography

基　　金：国家自然科学基金项目(40671051)

摘　　要：采用ESDA与GIS技术相结合的空间分析方法,以兰州—西宁城镇密集区县域为研究对象,选取10项经济指标数据,对2000—2008年密集区县域经济空间差异演变趋势、特征与驱动力进行了初步探索。结果表明:随着经济水平相当的县域之间集聚度不断提升,空间极化成为该区域经济空间差异演化的主要趋势,产业结构、集聚效应、边界效应为其演化的主要驱动因素;HH型、LL型县域分别趋于向密集区北部和南部集中,南北差异为该区域经济空间分异的主要表征;密集区北部(核心区)对南部区域的空间极化作用持续增强,以西宁市区为中心的局部空间扩散作用显现。Spatial analysis methods of ESDA and GIS were applied for the study on trends, features and driving forces of spatially economic disparity within counties that located in the concentrated urbanization area ranging from Lanzhou to Xining, based on data collected from 36 counties from 2000 to 2008 which is composed of I0 items of economic indicators. The results show that the constantly enhanced urban concentration of those counties that have small economic gaps between each other reflects the tendency of spatial polarization around this area, and industrial structure, agglomeration effects and boundary effects have become the three main driving forces of spatially economic disparity within these counties. Furthermore, the primary feature of spatially economic ＂differentiation lies in the difference of urban concentration patterns between the northern part and its adjacent area in the south. In other words, its higher developmental level in the north have led to a more concentrated town distribution, namely the HH category, which is in a stark contrast to the LL category exited in the southern area, that is to say, the low level of town concentration in the south owing to its underdevelopment. In addition, The north has a constantly strengthened polarization effect to the south, resulting in its more prominent core position for the former. However, it is diametrically contrary for the Xining surrounded region that the spatial diffusion effect in this area has gradually appeared.

关 键 词：区域经济差异 ESDA 驱动力 兰州-西宁城镇密集区 

分 类 号：F127[经济管理—世界经济]