摘要
由于城市近年来的高速发展,使其大气下垫面的物理性质和地气相互作用发生了改变,进而影响了该地区的气候及环境的变化,如何通过合理的时空尺度对我国城市化进程进行监测和认知,这成为我国城市化发展的迫切需求。本文对成渝城市群2001至2012年的城市化发展过程进行监测,建立了改进的夜间灯光指数(VANUI),并且将VANUI指数与传统夜间灯光指数进行对比,分析它们对城市化区域的监测能力的差异及优势所在,为川渝地区未来城市化的发展规划服务。结果表明:(1)VANUI指数能够很好地反映城市区域的空间格局以及相关的细节信息,弥补夜间灯光指数在城市区域饱和的缺陷;(2)根据VANUI结果显示,2001年至2012年间成渝城市群城市区域面积扩张了约三倍,其中城市区域面积扩张速度最快的为四川省资阳市;(3)从整个成渝地区来看,在研究的近十年中,VANUI以接近线性的发展趋势在增加;(4)从总的统计结果来看,2009年至2011年为成渝城市群VANUI增长最为显著的时期。
Due to the rapid development of the city in recent years,the physical properties of the underlying surface of the atmosphere and the interaction of the atmosphere have changed,which has affected the climate and environmental changes in the region.This paper monitors the urbanization development process of Chengdu and Chongqing urban agglomeration from 2001 to 2012,and establishes an improved nighttime light index(VANUI),and compares the VANUI index with the traditional nighttime light index to analyze their ability to monitor urbanized areas.The results show that:(1)VANUI index can reflect the spatial pattern of urban areas and related details,and make up for the shortcomings of nighttime light index saturation in urban areas;(2)According to VANUI results,the area of the urban area has expanded by about three times,and the fastest expansion of the urban area is Ziyang City,Sichuan Province;(3)From the perspective of the entire Chengdu-Chongqing area,VANUI has developed in a nearly linear manner in the past decade of research.(4)The trend is increasing from the overall statistical results,2009 to 2011 is the most significant period for the growth of VANUI.
作者
梁茹冰
陈庆涛
夏至业
张洋
LIANG Rubing;CHEN Qingtao;XIA Zhiye;ZHANG Yang(College of Earth Science,Chengdu University of Technology,Chengdu 610059,China;Remote sensing science and technology,Chengdu University of Information Technology,Chengdu 100621,China)
出处
《测绘地理信息》
CSCD
2021年第S01期210-215,共6页
Journal of Geomatics
基金
国土资源部地学空间信息技术重点实验室开放研究基金(KLGSIT2013-15)
四川省教育厅科研重点项目(16ZA0106)
四川省科技厅重点研发项目(2017GZ0334)
关键词
城市化
夜间灯光
VANUI
process of urbanization
night lighting
VANUI
