基于夜间灯光影像的云南省建成区时空演变及影响因素分析  

Spatial-temporal Evolution and Influencing Factors of Built-up Areas in Yunnan Province Based on Nighttime Light Images

作　　者：李媛婷 李益敏[2,3] 吴博闻 计培琨 杨雪[2] LI Yuanting;LI Yimin;WU Bowen;JI Peikun;YANG Xue(Institute of International Rivers and Ecological Security,Yunnan University,Kunming 650500,China;School of Earth Sciences,Yunnan University,Kunming 650500,China;Domestic High Score Satellite Remote Sensing Geological Engineering Research Center,Yunnan University,Kunming 650500,China)

机构地区：[1]云南大学国际河流与生态安全研究院,昆明650500 [2]云南大学地球科学学院,昆明650500 [3]云南大学云南省高校国产高分卫星遥感地质工程研究中心,昆明650500

出　　处：《地域研究与开发》2023年第1期61-67,共7页Areal Research and Development

基　　金：云南省科技厅—云南大学联合基金重点项目(2019FY003017);国家自然科学基金项目(41161070);中国地质调查局地质调查项目(DD20221824)。

摘　　要：利用2012年、2015年、2018年和2020年的夜间灯光数据与统计数据,在4期建成区提取结果相对误差均小于5%的基础上,采用局部空间自相关、标准差椭圆、地理探测器等方法进行建成区时空格局与影响因素分析。结果表明:建成区扩张速度分布由2012—2015年的从中央到四周递减转变为2015—2020年的四周增速较高而中央较低,2012—2020年扩张强度有所提升,中强度及以上州市占比由2012—2015年的31.25%增加到2018—2020年的50%;建成区扩张速度的高高聚集区与热点区域均分布在滇中与滇东北,且建成区3个时间段内重心呈西北—东北—东南迁移趋势;扩张速度演变的主导单因子为路网密度、用水总量和人口密度,且因子间的交互作用均大于单因子作用。因此,需采取多管齐下、因地制宜的合理调控与正向激励政策来促进平衡发展。In order to promote the coordinated and sustainable development of Yunnan Province,nighttime light datas and statistical datas from 2012 to 2020 were used.On the basis of the relative errors of the extraction results in the four phases built-up areas are all less than 5%,local spatial autocorrelation,standard deviation ellipse and geographic detector were used to analyze the spatial-temporal pattern and influencing factors of built-up areas.The results show that:The expansion rate of built-up areas decreases from the middle to periphery during 2012—2015 to a high growth rate on the edge and a low growth rate in the middle during 2015—2020,while the expansion intensity of prefecture-level cities with medium growth rate or above increases from 31.25%during 2012—2015 to 50%during 2015—2020;the high agglomerations and hot spots of the built-up area are distributed in central and northeast Yunnan,and the barycenter of the built-up area migrates from northwest to northeast to southeast in four years;the dominant single factors for the evolution of expansion speed are density of road network,total water supply and population density,and the interaction among the factors is greater than the single factor.Hence it is essential to adopt multi-pronged,reasonable regulation and positive incentive policies according to local conditions to promote balanced development.

关 键 词：夜间灯光遥感 建成区演变 影响因素 云南省 

分 类 号：TU984[建筑科学—城市规划与设计]