武汉市建设用地扩张遥感监测及空间分异分析
发布时间：2018-11-11 16:13
【摘要】：为分析武汉市建设用地扩张时空特征,基于1990,2000,2005和2010年获取的Landsat影像数据,利用面向对象分类方法提取建设用地信息;采用城市扩张速度(expansion speed index,ESI)、扩张强度(expansion intensity index,EII)及综合扩张程度指数(expansion degree index,EDI)和标准差椭圆(standard deviational ellipse,SDE)空间分析方法分析该市1990 2010年建设用地扩张时序及空间分异特征。结果表明:武汉市建设用地呈扩张趋势,20 a间扩张了749.9 km~2,前期10 a、中期5 a和后期5 a间扩张面积分别占扩张总面积的19.06%,33.33%和47.61%;3个时段的ESI和EII均呈增大趋势,后期扩张程度尤为剧烈。SDE分析表明,20 a来武汉市建设用地空间分布呈离散趋势,前期局部扩张,中期趋于均衡扩张,这2个时段呈"东北→西南"空间分布格局;后期全局均衡扩张,空间分布不存在方向性。研究结果将有助于武汉市建设用地的理性扩张决策。
[Abstract]:In order to analyze the spatial and temporal characteristics of construction land expansion in Wuhan City, based on the Landsat image data obtained from 1990 / 2000,2005 and 2010, the information of construction land was extracted by object oriented classification method. Urban expansion rate (expansion speed index,ESI), expansion intensity (expansion intensity index,EII), comprehensive expansion degree index (expansion degree index,EDI) and standard deviation elliptical (standard deviational ellipse, SDE) spatial analysis method is used to analyze the time series and spatial differentiation characteristics of construction land expansion in the city in 1990 and 2010. The results showed that the construction land in Wuhan showed a tendency of expansion, with the expansion of 749.9 km~2, for 10 years in 20 years, the expansion area of 19.0633% and 47.61% of the total area in the middle period of 5 years and the later period of 5 years. The results of SDE analysis showed that the spatial distribution of construction land in Wuhan showed a discrete trend in the past 20 years, local expansion in the early stage and balanced expansion in the middle period. The spatial distribution pattern of the two periods is "northeast and southwest". In the later stage of global equilibrium expansion, there is no directivity in spatial distribution. The research results will be helpful to the rational expansion decision of Wuhan construction land.
【作者单位】： 中国科学院测量与地球物理研究所;天津农学院;
【基金】：国家自然科学基金项目“江汉平原钉螺扩散时空分布及其预警研究”(编号:41571487) 中国科学院战略性先导科技专项项目“应对气候变化的碳收支认证及相关问题”之子课题“华南地区陆地生态系统固碳参量遥感监测及估算技术研究”(编号:XDA0505107) 环保部项目“全国生态环境十年(2000 2010年)变化遥感调查与评估”之子课题“华南地区生态环境十年变化遥感调查与评估”(编号:XDA050501)共同资助
【分类号】：F299.23;P237
本文编号：2325403
[Abstract]:In order to analyze the spatial and temporal characteristics of construction land expansion in Wuhan City, based on the Landsat image data obtained from 1990 / 2000,2005 and 2010, the information of construction land was extracted by object oriented classification method. Urban expansion rate (expansion speed index,ESI), expansion intensity (expansion intensity index,EII), comprehensive expansion degree index (expansion degree index,EDI) and standard deviation elliptical (standard deviational ellipse, SDE) spatial analysis method is used to analyze the time series and spatial differentiation characteristics of construction land expansion in the city in 1990 and 2010. The results showed that the construction land in Wuhan showed a tendency of expansion, with the expansion of 749.9 km~2, for 10 years in 20 years, the expansion area of 19.0633% and 47.61% of the total area in the middle period of 5 years and the later period of 5 years. The results of SDE analysis showed that the spatial distribution of construction land in Wuhan showed a discrete trend in the past 20 years, local expansion in the early stage and balanced expansion in the middle period. The spatial distribution pattern of the two periods is "northeast and southwest". In the later stage of global equilibrium expansion, there is no directivity in spatial distribution. The research results will be helpful to the rational expansion decision of Wuhan construction land.
【作者单位】： 中国科学院测量与地球物理研究所;天津农学院;
【基金】：国家自然科学基金项目“江汉平原钉螺扩散时空分布及其预警研究”(编号:41571487) 中国科学院战略性先导科技专项项目“应对气候变化的碳收支认证及相关问题”之子课题“华南地区陆地生态系统固碳参量遥感监测及估算技术研究”(编号:XDA0505107) 环保部项目“全国生态环境十年(2000 2010年)变化遥感调查与评估”之子课题“华南地区生态环境十年变化遥感调查与评估”(编号:XDA050501)共同资助
【分类号】：F299.23;P237
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