关中-天水经济区城市土地利用效益与城市化耦合协调性研究

Research on Land Use Efficiency and Urbanization Coupling Coordination in Guanzhong-Tianshui Economic Zone

建立城市土地利用效益和城市化综合评价指标体系,用熵值法和耦合协调度模型,对2001—2012年关中-天水经济区的城市土地利用效益和城市化耦合协调时空特征进行分析.结果表明,该时段内经济区各城市土地利用效益和城市化水平呈上升趋势但未实现理想同步;城市土地利用效益在空间上表现出由均质分布向"核心—边缘"变化的趋势,城市化水平则呈稳定的"核心—边缘"空间结构;各地市均属于颉颃阶段且无明显地域差异,各地市协调度逐年增加但表现迥异,且绝对差异呈上升趋势,相对差异表现为"N"形下降趋势;所有地市协调度空间分布呈"核心—边缘"结构,且大体符合"距离衰减"的地理学规律.

The article analyzes synthetically urban land use efficiency and spatial-temporal characteristic of urbanization coupling coordination in Guanzhong-Tianshui Economic Zone {tom 2001 to 2012 by establishing urban land use efficiency and comprehensive evaluation index system of urbanization and by using entropy evaluation method and coupling coordination degree model in physics. The result shows that： the land use efficiency and urbanization level of cities in the zone during study phase period tend to rise, not ideal synchronizing though; the urban land use efficiency tends to change from homogeneous distribution in space into the variation of core-to-edges, the level of urbanization, however, keeps stable core-edges spatial structure. The coupling degree analysis shows that the cities are in equal-match stage and no distinct regional disparity among them. The coordination degree increases by years but features distinction among cities, the absolute difference tends to rise, and relative differences downtrends with N-shape; the distribution of coordination degree spatially in all cities in the zone is distinct core-edges structure and generally conforms to the geological discipline of ＂range attenuation＂.