摘要
借助ENVI和GIS技术对大连市1990年以来遥感影像资料及空间数据进行统计分析,研究其建成区扩张的时空演变及动力机制。研究结果表明,近20年来,大连市区建设用地扩张1.34倍,以东北为主要拓展方向。1990—1995年扩张速度和扩张贡献率最大,城市空间不规则扩张;1995—2005年城市以填充式发展为主,边界逐渐规则;2005年以来进入了新一轮的建设用地扩张时期。人口增长和经济发展对建设用地扩张的驱动作用趋于弱化,政府决策行为成为主要影响因素,尤其是金州区与新城区(开发区)的建立与发展对大连市区建设用地扩张有明显的牵引和带动作用。
Based on the review of related research on construction land expansion at home and abroad, this paper takes Dalian urban area as the study area to analyze the construction land development during the past 20 years. Five TM/ETM images were used to extract the boundary of construction land from 1990-2010 with a five years interval. ENVI and GIS were employed to obtain the boundary from remote sensing image data. Then the characteristics of construction land expansion are identified by using several methods, including ex- pansion speed, expansion contribution rate, expansion elasticity, fractal model and spatial barycenter transfer model. Based on the five models the spatial and temporal features of Dalian urban area were analyzed and three development stages were divided from 1990 to 2010. The result showed that, during the past 20 years, the area of construction land is expanded almost 1.34 times compared to 1990 and the main development di- rection is northeast, which is more obvious between 1990 and 1995. Compared to the fast expanding area of construction land, the expanding speed is a decreasing trend which contain a appreciably rally after 2005. At last, we analyzed three main driving factors contain population, economic development and policy. Popula-tion is a major driving factor of construction land expansion. The establishment and development of the de-velopment zones play a significant traction and driving role in the construction land expansion of Dalian ur-ban area.
出处
《人文地理》
CSSCI
北大核心
2013年第4期77-82,共6页
Human Geography
基金
中国科学院知识创新工程重要方向项目(KZCX2-YW-342
KZCX2-YW-321-04)
国家自然科学基金面上项目(41071108)
国家自然科学基金重点项目(40635030)
关键词
建设用地
空间扩张
时空特征
大连市区
construction land
spatial expansion
spatial-temporal features
Dalian urban area
