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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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；

youdao