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太忻经济区是引领山西中部城市群发展的重要引擎,基于多源遥感数据对2000—2023年太忻经济区提取城市建成区范围,利用城市扩展指数分析、重心坐标和等扇分析法等方法分析城市扩展过程,并利用灰色关联法分析相关驱动因素,揭示其城市扩展特征与规律。结果表明:2000—2023年太忻地区城市年均扩展速度为12.5km2,2020—2023年速度最快,年均达18.31km2;太忻地区城市空间整体紧凑度水平较低,但趋于紧凑发展;城市重心迁移距离较大,呈现明显向东北方向移动的趋势;城市空间扩展方向主要为东北和西南方向,东北方向扩展面积为51.73km2;人口、经济、社会和政策因素都具有正向影响,其中人口和社会因素影响最为显著。

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