Constructing an index system with 17 indexes which can reflect county comprehensive development levels adequately,than using the factor analysis method,binding ID differentiation index and GIS technology,the spatial analysis on county comprehensive development levels in Zhejiang Province was conducted.The results showed that the characteristics of county comprehensive development levels present a convex distribution ; the regional spatial structure presents that the levels of counties comprehensive development tends to grow from south to north and from west to east in space; the overall ID differentiation index of comprehensive development at county level of Zhejiang Province is 0.223 4.Around Hangzhou bay area,counties with high level comprehensive development appear to be cluster,and the differences among these counties are relatively big.In the southwest of Zhejiang Province,the level of the comprehensive development of most counties are low,which indicates that this region is now in a less developed situation compared with the other three in Zhejiang Province.On the basis of this,several countermeasures for balancing regional development were put forward.%选取了17项指标构建一个可以充分反映县域综合发展水平的评价指标体系,采用因子分析法、分异指数评价法与GIS空间分析工具相结合,对浙江省县域综合发展水平空间分异进行研究.结果表明,浙江省综合发展水平在数值上呈强者偏强,弱者偏弱,中低水平和低水平相对集中的“金字塔型”分布特征；空间分异较大,全局空间分异ID指数为0.223 4,空间分异特征表现为发展水平较高的县域集中分布于环杭州湾地区,发展水平低的县域集中分布于浙西南地区.据此提出了平衡区域发展的对策建议.
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