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。
Different spatial patterns, cultures, planning policies, and various driving forces of urban growth or decline result in changes of land use and functional linkages between urban and rural areas.
不同空间模式、文化、规划政策和迥异的城市化或城市衰退的驱动力等因素导致城乡之间出现土地利用联系和功能关联。
Remote sensing images are used to monitor the urban built-up area expansion from 1979-2004. The spatial-temporal patterns of these cities are: during 1979-1989, the expansion rates are all low;
利用遥感数据分析得到的研究区域的土地利用变化数据，总结了研究区域城市建成区扩展的时空特征：在1979-1989年间，四个城市建成区扩展速度均较小；
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