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基于NPP-VIIRS的云南省城市经济空间格局演变 被引量:3

Urban Economic Spatial Pattern Evolution of Yunnan Province Based on NPP-VIIRS
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摘要 基于NPP-VIIRS夜光数据,以灯光总量、平均灯光指数和灯光增长率为统计指标,采用标准差椭圆、城市位序—规模法、Getis-Ord Gi^(*)分析以及空间引力模型等方法计算分析了2012-2019年云南省城市经济空间格局的演变情况。结果表明:(1) 2012-2019年云南省夜光数据总量逐年增长,昆明市增量最多,平均灯光指数也最强,但一些沿边中小城市增长率较快;(2)虽然区域经济发展呈分散趋势,但仍为首位型分布,云南省的经济重心依然位于昆明市周边,说明经济仍受传统城市群影响较多;(3)截至2019年,受滇中城市群的辐射,热点区明显增多,且有向四周扩展的趋势,区位度仍以昆明—玉溪为中心向外辐射,未形成新的高区位度城市,其余一些沿边城市受滇中经济圈的影响辐射较小,未形成有规模的经济带(圈),处于低区位度。2019年一级联系引力线数量大幅增长,位于滇中城市群周边;同时受到滇中经济圈的辐射,2019年二级联系引力线数量也大幅增长。 Based on the spatial statistical indices of total, growth rate of light and average light index from NPP_VIIRS data, we used standard deviational ellipse, city rank-size distribution, Getis-Ord Gi^(*)analysis and spatial correlation model methods to study the urban economic spatial pattern evolution of Yunnan Province from 2012 to 2019. The results show that(1) the total amount of nighttime light data increased every year in Yunnan Province from 2012 to 2019. Kunming had the largest increase and the strongest average light index, but the growth rates of some small and medium-sized cities along the border were fast.(2)Although the regional economy development tended to be scattered, the economic gravity center was still around Kunming City, indicating that the economy was still affected by traditional urban agglomerations.(3)The number of hot spots increased obviously due to the radiation of central Yunnan urban agglomeration, and had the trend to expand to the surrounding cities. The location degree radiated outward from Kunming-Yuxi. Other border cities were affected by the central Yunnan economic circle and had not formed a large-scale economic belt(circle). The number of first-level spatial correlation lines increased significantly in 2019, but it was still around the central Yunnan urban agglomeration. The second-level spatial correlation lines also increased greatly due to the radiation of central Yunnan economic circle.
作者 罗虹 赵政权 LUO Hong
出处 《地理空间信息》 2022年第1期32-37,I0002,共7页 Geospatial Information
基金 云南省地矿局科技创新基金资助项目(2017JJ04)。
关键词 NPP-VIIRS 云南省 城市经济空间格局 NPP-VIIRS Yunnan Province urban economic spatial pattern
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