The spatial analysis of urban built-up area is the basis of urban development trend analysis, and is important for future urban planning.
城市建成区的空间变化分析，是城镇发展趋势分析的基础，对城镇远景规划有十分重要的指导作用。
With the expanding of urban built-up area and the progress of urban redevelopment, residence dismantlement and residents relocation is unavoidable.
在城市扩张和旧城改造的过程中，城市拆迁是不可避免的。
Urban fringe is a zone of transition between the built-up area and the countryside. It is the space that belongs to urban area and is located around urban built-up area.
城市边缘区是位于城市建成区外围，由城市向乡村过渡的区域，是城市地域结构的一部分。
Urban sprawl is more rapid that the urban built-up area increased from 9386 square kilometers in 1985 to 35469 square kilometers in 2007, which equals a 278% of increase.
城市建成区的规模扩展更加迅速，城市建成区的面积已从1985年的9386平方公里增加到2007的35469平方公里，增加了278%。
The results of statistical analysis of related data showed that indigenous plants applied in urban greening were not abundant in urban built-up area of Beijing at present.
通过对相关指标进行统计分析，结果表明，目前北京城市建成区园林绿化中应用的乡土植物种类还不够丰富。
We start at the rank-size rule by urban population and the rank-size rule by urban built-up area, and derive a mathematical relationship that the land use size of a city and its population.
从前人的成果，即以人口表示的城市位序-规模法则和以建成区面积表示的位序-规模法则出发，演绎出城市的用地规模和人口数量呈异速增长。
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；
Abstract: Using the data of built-up area at the city level from 1984 to 2014, the paper describes the present status of urban sprawl and analyzes the characteristics and efficiency.
摘要：选取1984 ~ 2014年我国地级以上城市建成区面积的数据，在描述城市扩张现状的基础上分析我国城市规模演变的特征和效率。
The re-development of built-up area in the development zone is an important path for promoting the intensive use of urban space and low-carbon city construction.
开发区建成区的再开发是促进我国城市空间的集约利用和建设低碳城市的一条重要途径。
The re-development of built-up area in the development zone is an important path for promoting the intensive use of urban space and low-carbon city construction.
开发区建成区的再开发是促进我国城市空间的集约利用和建设低碳城市的一条重要途径。
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