城市扩展区域 urban expansion areas
Using the urban sprawl information from 1987 to 2001 by RS and the urban map of Jinan City in 1977, we studied the urban expansion spatial pattern and its driving forces by means of GIS technique.
在利用遥感信息获取了济南市1987-2001年城区扩展信息之后，结合1977年济南市城区图，采用地理信息系统手段，对1977-2001年间济南市城市发展模式与驱动力进行了研究。
参考来源 - 基于陆地卫星TM/ETM～+和GIS的济南城区扩展动态监测研究·2,447,543篇论文数据，部分数据来源于NoteExpress
利用MODIS资料能准确地监测城区空间扩展变化面积的大小。
The urban expansion areas can be monitored correctly by using MODIS data.
城区空间的扩展变化对人居环境产生的影响越来越受到人们的关注。
It has been more and more noticed by people that the urban expansion and change impact urban environments.
而树种实有植株径阶分布状况，则通过抽样调查、统计分析得到样本径阶分布规律，再将该规律扩展到北京城区乔木实有植株。
Distribution rule of the arbor in different diametric class was investigated by sampling survey and statistical analysis, then expanded to the whole area in Beijing.
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