Clarify the characteristics of Hefei urban spatial patterns and historical trend, then, it will help to improve Hefei city image and function.

理清合肥城市空间形态的特征和历史走向，将会有助于合肥城市形象和功能的提升。

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Functional division and administrative region may influence the spatial structure of city image of residents. The Yellow River, Mt. Baita and Mt. Wuquan have played a role of edge elements.

功能分区、行政区划影响着城市居民的总体城市意象空间结构，黄河、白塔山和五泉山却起到了边缘要素的功能。

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This paper take Xi 'an city as the study area and through remote sensing image analysis and statistics, obtained Xi 'an city growth change characteristics in spatial distribution and temporal.

文章以西安市为研究区域，通过对遥感影像和统计资料进行分析，得到了西安城市增长变化的时空特征。

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