桂林市主城区建设用地扩张时空动态特征分析

发布时间：2018-05-06 12:20

本文选题：城市化 + 建设用地　；参考：《广西师范大学学报(自然科学版)》2015年04期

【摘要】：以快速城市化的桂林市主城区为案例,利用Landsat系列遥感影像数据源,通过构建归一化植被指数(NDVI)、归一化建筑指数(NDBI)和修正归一化水体指数(NDWI),并对这3个指数波段进行假彩色合成;运用最大似然监督分类法分别提取1991—2013年3期建设用地信息,借助ARCGIS工具对城市建设用地空间分布与扩展特征进行系统分析,结果表明:桂林市城市化扩展进程日益加快,主城区建设用地面积和扩展强度指数均呈增大趋势。不论从城市建设用地总体空间格局,还是从各个城区、城市方位、缓冲区以及地形条件等角度分析,城市后期(2006—2013年)的建设用地扩展明显快于前期(1991—2005年)。目前,随着桂林市城市化的不断推进,城乡过渡地带的高新技术产业园区、工业园区以及南部远郊区的雁山大学城和卫星城镇,都已成为城市建设用地扩张的热点区域。
[Abstract]:Taking the main urban area of Guilin city as a case, using Landsat series remote sensing image data source, Through the construction of normalized vegetation index (NDVI), normalized building index (NDBI) and modified normalized water body index (NDWI), the pseudocolor synthesis of these three index bands was carried out, and the information of construction land for three periods from 1991 to 2013 was extracted by maximum likelihood supervised classification. The spatial distribution and expansion characteristics of urban construction land are systematically analyzed by means of ARCGIS tools. The results show that the urbanization and expansion process of Guilin is accelerating day by day, and the land area and the expansion intensity index of the main urban area are both increasing. No matter from the overall spatial pattern of urban construction land, or from the point of view of urban area, urban location, buffer zone and terrain conditions, the expansion of construction land in late urban period (2006-2013) is much faster than that in early period 1991-2005. At present, with the development of urbanization in Guilin, the high-tech industrial park, industrial park, Yanshan university town and satellite town in the transition zone of urban and rural areas have become the hot spots of urban construction land expansion.
【作者单位】：广西师范大学环境与资源学院;岩溶生态与环境变化研究广西高校重点实验室(广西师范大学);
【基金】：国家自然科学基金资助项目(41361041) 广西自然科学基金资助项目(2014GXNSFAA118300) 岩溶生态与环境变化研究广西高校重点实验室资助项目(YRHJ15Z005)
【分类号】：F299.2;P237

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