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基于单指标和综合指标,运用熵值法、变异系数、泰尔指数、空间自相关(ESDA)、Getis-Ord Gi*统计指数、标准差椭圆等多种方法和技术对2005-2012年信阳市170个镇域单元经济差异的时空演变特征进行了研究,探讨了影响该市镇域经济发展的驱动因素.研究发现:(1)基于人均GDP指标测度经济发展水平时,2005-2012年总体各个镇域之间的经济发展水平相对差异较大,并且有不断扩大的趋势.(2)信阳市170个镇域单元经济呈现西部市区、东部固始县、潢川部分镇域经济发展水平较高,北部、中西部、南部、东南部镇域经济发展水平较为落后,镇域经济空间差异明显.(3)通过G指数分析信阳市内部空间特征时,2005-2012年镇域单元热点区域较少,冷点区域比较多,并且冷点区域有不断扩张的态势,呈现出“西扩南移”的趋势.(4)从人均GDP与乡镇经济对比的标准差椭圆系数及经济重心的变化来看,信阳市镇域经济分布呈现明显的东—西方向格局,经济重心主要位于信阳市的中部偏东的潢川县境内,并且有西移趋势.
Based on single index and comprehensive index, using various methods and techniques such as entropy, coefficient of variation, Theil index, spatial autocorrelation (ESDA), Getis-Ord Gi * statistical index, standard deviation ellipse and so on, And the driving factors that affect the economic development of the town area were discussed.The findings are as follows: (1) When measuring the level of economic development based on the per capita GDP index, The level of economic development between towns is relatively different, and there is a growing trend. (2) The economy of 170 towns in Xinyang City shows the economic development level in some urban areas in the west, Gushi and Huangchuan in the east The level of economic development in the high, northern, central and western, southern and southeastern townships is relatively backward, and the economic differences in the townships are obvious. (3) When analyzing the internal spatial characteristics of Xinyang by G-index, There are more cold spots and cold spots, and the cold spots have a tendency to expand, showing a trend of “expanding southwestwardly.” (4) From the standard deviation ellipsoid of per capita GDP and township economy and the economic center of gravity Change point of view, Economic distribution of Xinyang town area shows a clear east-west pattern. The economic center of gravity is mainly located in Huangchuan County, which is located east of Xinyang City and has a trend of westward migration.