1990—2013年辽宁省城市面积扩张的遥感分析

发布时间：2018-03-31 04:30

本文选题：辽宁省　切入点：城市面积　出处：《江苏农业科学》2017年05期

【摘要】：综合应用Labdsat5 TM、Landsat8 OLI卫星遥感数据,结合面向对象分类方法,提取1990、2013年辽宁省县级以上行政单元城区的分布范围,分析过去20余年间辽宁省城市面积的扩张特征。结果表明,1990—2013年期间,辽宁省城市面积增加了1 122.2 km~2;31个县级以上城市城区面积都有所扩张,扩张率最小的为凤城市,城区面积增加了10.29%,扩张最大的为东港市,城区面积增加了616.84%;沈阳市扩张面积的绝对值相对最大,为250.87 km~2;辽宁省城市面积按扩张方式可分为4类:集中型同心圆扩张模式、沿主要对外交通轴线带状扩张模式、跳跃式成组团扩张模式、低密度连续蔓延模式,经济增长、人口增加、交通牵引、政策实施促进了辽宁省城市面积的大规模扩张;1990—2013年的23年间,辽宁省国内生产总值增加27倍,1990—2010年的20年间外商直接投资总额增长31倍,人口数量增加5.9%。建议未来的城市发展过程中,应适当控制城市规模,使城市面积有序扩张。
[Abstract]:Based on the Labdsat5 TMN Landsat8 OLI satellite remote sensing data and the object-oriented classification method, the distribution range of the administrative units above county level in Liaoning Province in 1990 and 2013 is extracted. The characteristics of urban area expansion in Liaoning Province in the past 20 years are analyzed. The results show that the urban area of Liaoning Province increased by 1 122.2 km / m during 1990-2013, and the urban area of 31 cities above the county level has been expanded, with the lowest expansion rate in Fengcheng City. The urban area increased 10.29%, the largest expansion was Donggang City, and the urban area increased 616.84; the absolute value of Shenyang's expanding area was relatively largest, 250.87 km2; Liaoning's urban area could be divided into four types according to the expansion mode: centralized concentric circle expansion mode, Along the main external traffic axis the belt expansion mode, the jump group expansion mode, the low density continuous spread mode, the economic growth, the population increase, the transportation traction, The implementation of the policy has contributed to the large-scale expansion of the urban area of Liaoning Province. In the 23 years from 1990 to 2013, the gross domestic product of Liaoning Province increased by 27 times, and the total foreign direct investment increased by 31 times in the 20 years from 1990 to 2010. It is suggested that in the process of urban development in the future, the urban scale should be properly controlled and the urban area should be expanded in an orderly manner.
【作者单位】：吉林大学地球科学学院;中国科学院东北地理与农业生态研究所;
【基金】：国家自然科学基金(编号:41471148)
【分类号】：F299.27;P237

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