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.
在这四年内昆明市城区以年增长率1.64%的速度迅速扩展。
Thus it has expanded in 1.64% rate of Kunming city in these four years.
在这四年内昆明市城区以年增长率1.64%的速度迅速扩展。
Thus it has expanded in 1.64% rate of Kunming city in these four years.
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