选用分维数和紧凑度作为城市形态指数，与城市土地利用变化相结合研究城市扩展的过程和特征。
The process and characteristics of urban expansion are analyzed using fractal dimension and compactness based spatial morphologic measurement coupled with land use change survey.
城市形态指数与土地利用变化指标有很好的互补性，两者结合可以更充分描述城市扩展的特征和过程。
The metrics of urban morphology and urban land use are compulsory to each other which can be used to satisfactorily describe the process and characteristics of urban expansion.
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；
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;
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