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基于夜间灯光数据的重庆市城市扩张研究
引用本文:白贺庭,马明国,阎然,刘康甯,隽楚涵.基于夜间灯光数据的重庆市城市扩张研究[J].遥感技术与应用,2019(1):216-224.
作者姓名:白贺庭  马明国  阎然  刘康甯  隽楚涵
作者单位:西南大学地理科学学院遥感大数据应用重庆市工程研究中心
基金项目:国家重点研发计划重点专项项目"生态物联网示范数据评价和生态应用"(2016YFC0500106);国家自然科学基金项目"西南地区表层岩溶生态系统碳通量观测;分析与模拟"(41771453);中央高校基本科研业务费专项资金"基于夜间灯光数据的重庆市城市扩张监测研究"(XDJK2017D028)资助
摘    要:城市化现象是区域经济发展的重要体现,其进程反映了该地区经济发展水平。重庆自1997年直辖以来,经济得到了高速发展,城市化水平也相应迅速提高,寻找一种直观、高效的城市化表达方法,从全局上正确把握直辖以来重庆市的城市化发展成果具有重大现实意义。通过统计数据比较法对夜间灯光数据逐年提取重庆市建成区范围,再根据提取结果构建城市重心模型,计算城镇扩张速度,建立夜间灯光指数。研究发现:重庆市城镇分布在空间上呈点状分布并向四周扩张;城市化水平差异明显,其他区县远落后于主城区;城市重心由渝中区逐渐转移至渝北区内;城市扩张保持较高速度。以此为重庆市城市规划和建设提供重要参考。

关 键 词:夜间灯光数据  夜间灯光指数  城市扩张  重庆市

Evaluation of Urban Expansion in Chongqing City based on the Nighttime Light Data
Bai Heting,Ma Mingguo,Yan Ran,Liu Kangning,Juan Chuhan.Evaluation of Urban Expansion in Chongqing City based on the Nighttime Light Data[J].Remote Sensing Technology and Application,2019(1):216-224.
Authors:Bai Heting  Ma Mingguo  Yan Ran  Liu Kangning  Juan Chuhan
Affiliation:(Chongqing Engineering Research Center for Remote Sensing Big Data Application School of Geographical Sciences,Southwest University,Chongqing 400715,China)
Abstract:Urbanization is an important embodiment of regional economic development.Its progress reflects the level of economic development in the region.Since Chongqing being directly under the Central Government in 1997,it has enjoyed rapid economic growth and rapid urbanization.Looking for an intuitive and efficient method of urbanization is of great practical significance to correctly grasp the achievements of urbanization in Chongqing from the overall situation.Through the comparison of statistical data on night lighting data,we can extract the built-up area of Chongqing year after year.The city gravity model is based on the results.A night light index is established and used to calculate the speed of urban expansion.The result indicates that the urban distributions in Chongqing is spatially distributed and expanded in all directions.There are great differences between urban areas and rural areas and urban area urbanization level is higher.The city gravity gradually shifted from Yuzhong district to Yubei district.The speed of city expansion maintains high.Our study can afford refers for the planning and construction of the Chongqing city.
Keywords:Nighttime light data  Urban expansion  Night lights index  Chongqing
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