1988―2006年珠三角建设用地扩展的空间差异分析  

Spatial Analysis of Construction Land Expansion in the Pearl River Delta during 1988-2006

作　　者：叶玉瑶[1] 张虹鸥[1] 刘凯[1] 苏泳娴[1] 

机构地区：[1]广州地理研究所,广州510070

出　　处：《热带地理》2012年第5期493-500,共8页Tropical Geography

基　　金：国家自然科学基金项目(41001385;41001291);广东省自然科学基金项目(10451007003005043)

摘　　要：采用珠三角1988、1998、2006年3个时相的建设用地解译数据,借助GIS空间分析工具,采用空间重心分析、象限缓冲区分析、典型区位空间分析、景观形态分析等空间分析方法,对1988年以来珠三角建设用地扩展的空间特征进行研究。其结果表明:1988年以来,珠三角的建设用地进入高速扩展时期,建设用地空间重心总体向东南方向移动,整个区域东部及南部的建设用地扩展占绝对优势,特别在近珠江口以及珠江口东岸地区表现得更加明显,围绕珠江口形成"剧烈扩展型―强扩展型―弱扩展型―稳定型"递变圈层结构;建设用地总体上呈现向沿路、沿海和平原区等典型区位集聚的特征,但在斑块层面上则表现出形态复杂和布局散乱的特点,且围绕城市中心区形成"集聚(高水平)―分散―集聚(低水平)"的圈层递变结构。ReMote sensing （ RS ） can provide spatially consistent datasets that cover large areas of land with both high spatial resolution and high temporal frequency. Combination use of RS with GIS can provide more comprehensive assessment of land cover change than that by using RS itself alone. In this paper, the Landsat Thematic Mapper （ TM ） images of 1988, 1998, and 2006 are used to detect the expansion of construction land in the Pearl River Delta. Subsequently, the spatial analyses of GIS are used to quantify the spatial characteristics of the construction land expansion. The result shows： 1 ） The spatial analyses used in the paper, including transfer model of spati^il gravity center, quadrant buffer analysis, typical location spatial analysis, integrated analysis and landscape pattern analysis, are pretty good to reveal the spatial characteristics of the expansion of construction land. 2 ） The construction land in the Pearl River Delta has expanded rapidly since 1988, leading to urban and suburban sprawl throughout the region. 3 ） In the regions near the Pearl estuary and the east coast of the Delta, the construction land expansion is more severe, as compared with that in other regions. That essentially reflects the important impact of Hong Kong, an international megacity, on the expansion of construction land in the Pearl River Delta. From the estuary rim to outer areas, the intensity of the expansion declines gradually, forming a concentric structure of successive change from dramatic to strong, to weak and to stable expansion. 4 ） The expansion also shows the characteristics of gathering on plains and along the major roads and coastlines in the whole region, posing a great threat to local ecological security. 5 ） The patches of the construction land are varied in shape, and their distribution is scattered, with a change from senior concentration to dispersion, in succession to junior concentration around the city centers. 6 ） As the expansion is too fast, sever and scattered, it is an urgen

关 键 词：建设用地 扩展 空间分析 珠三角 

分 类 号：F301.23[经济管理—产业经济]