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

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 10 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.?????