通过ESDA空间分析，研究1985 年以来新疆县域经济格局在空间上的变化及其特征。结果表明：1985 年以 来新疆县域经济发展水平表现出较弱的空间自相关性，但集聚作用总体不断增强。热点区的空间结构主要集中 在以奎—克—乌为核心的圈形结构，2000 年以后热点区显著增加，不断向北疆中部、东疆以及南疆东北部集聚；南 疆西南部处于经济发展的冷点区，有不断向东延伸至阿克苏地区的趋势。新疆县域经济增长的空间格局表现为 更多的不稳定性和异质性，集聚水平较低，集聚态势总体有所减弱；经济增长热点区的切换较为频繁，地理集中不 明显，有从北疆中部向东疆哈密地区、南疆西南部喀什地区转移的趋势；经济增长冷点区主要集中在南疆阿克苏 地区和田地区西部，县级尺度的经济与增长的区域差异呈现相反的演变趋势。从经济发展的时空特征上看，多峰 值是新疆经济空间格局演化的显著特征；经济空间格局的自组织性较强，但有减弱的趋势；空间格局演变中的随 机成分较低，而由结构化分异引起的空间差异十分显著，东南—西北方向经济发展的空间差异较小，东北方向经 济发展的异质性则十分明显，空间差异较大。

This article describes the spatia1 changes of the economy in Xinjiang at the county leve1 since 1985 by using the ESDA as well as other tools such as Moran's I, Getis-0rd Gi^* and function of variogram and 3-dimension figure. Based on six time discontinuity surfaces, some conclusions are drawn as follows: (1) Considering the overall spatial economic framework, the county level economy of Xinjiang shows a weak trend of spatial self correlation, with cluster function continuously strengthened on the whole. (2) The spatial structure of hotspot distribution tends to have a circular spatial structure centered on Kuitun, Kelamay and Wusu city, and the hotspots have been remarkably increased after 2000, converging in the central part of Northern Xinjiang, Eastern Xinjiang and the northeastern part of Southern Xinjiang. The coldspots converge in the southwest of Southern Xinjiang and tend to extend to the Aksu region in recent years. (3) The development of spatial economic growth framework is likely to be more unstable and heterogenous, and the convergence level is low and tends to be depressed. Hotspot areas are changing frequently without obvious geographica1 concentrations and tend to be converged in the Hami region of Eastern Xinjiang and the Kashi region in the southwest of Southern Xinjiang. The coldspots converge in the Aksu region and the west of the Hotan region in Southern Xinjiang, and the trend of regional difference of economic growth at the county level is opposite. (4) According to the spatio-temporal characteristics, multi-core is a remarkable character in the evolvement of spatial pattern of the economy in Xinjiang. The spatial economic framework is strong and self-organized, but tends to be weakened. The random of the spatial differential patterns keeps low and the mechanism of the structural differentiation caused by self correlation in space is quite remarkable. The spatial difference is low in the SE-NW direction. The heterogeneity of economic development in the NE direction is typical, and the spatial difference is great.