基于夜间灯光数据的城市中心区域提取与分析——以重庆市主城区为例
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摘要
传统城市中心提取多依赖统计数据,主观性较强且不具有普遍适用性。本文以重庆市主城区为例,以NPP-VIIRS夜间灯光遥感影像数据为研究数据,采用局部等值线树算法与等值线填充概念进行城市中心的提取,引用总规内容并结合相关量化指标进行分析。结果表明,主城区规划城市中心发展不均衡,在灯光数据下,部分规划中心并未达到亮度及面积阈值;重庆市主次中心发展现状并未存在显著差异,属性指标中的灯光亮度最大值及灯光亮度总值最大值并未出现于主中心之中;重庆市主城区城市中心分布与交通因子紧密关联,各交通因子密度远高于其他地区。
Most of the traditional urban center extraction relies on statistical data, which is subjective and not universally applicable.Taking the main urban area of Chongqing as an example, this paper takes NPP-VIIRS nighttime remote sensing image data as the research data. The local contour tree algorithm and the contour filling concept are used to extract the city center, and the general rules are combined and analyzed with relevant quantitative indicators. The results show that the urban center planning urban center development is not balanced, under the lighting data, some planning centers have not reached the brightness and area thresholds; there is no significant difference in the development status of Chongqing's primary and secondary centers, the maximum value of the brightness of the light and the maximum value of the total brightness of the light in the attribute indicators do not appear in the main center; the distribution of urban centers in the main urban area of Chongqing is closely related to traffic factors,and the density of various traffic factors is much higher than other regions.
Most of the traditional urban center extraction relies on statistical data, which is subjective and not universally applicable.Taking the main urban area of Chongqing as an example, this paper takes NPP-VIIRS nighttime remote sensing image data as the research data. The local contour tree algorithm and the contour filling concept are used to extract the city center, and the general rules are combined and analyzed with relevant quantitative indicators. The results show that the urban center planning urban center development is not balanced, under the lighting data, some planning centers have not reached the brightness and area thresholds; there is no significant difference in the development status of Chongqing's primary and secondary centers, the maximum value of the brightness of the light and the maximum value of the total brightness of the light in the attribute indicators do not appear in the main center; the distribution of urban centers in the main urban area of Chongqing is closely related to traffic factors,and the density of various traffic factors is much higher than other regions.
引文
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7 黄璐,杨英宝,朱琴.基于DMSP/OLS数据的南京市建成区扩展研究[J].地理空间信息,2018,16(1):94-99.
8 彭晨.夜间灯光概率密度分布模型研究及应用[D].上海:华东师范大学,2016.
9 唐敏.基于对数变换的NPP-VIIRS夜间灯光遥感影像在城市建成区提取中的应用[D].上海:华东师范大学,2017.
10 杜微.基于格网的等值线生成与填充算法研究[D].长沙:中南大学,2010.
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12 陈少沛,丘健妮.广州城市通达性综合评价及空间差异[J].地理科学进展,2014,33(4):46-47.
2 陈佐旗.基于多源夜间灯光遥感影像的多尺度城市空间形态结构分析[D].上海:华东师范大学,2017.
3 雷英哲,田晶,林镠鹏,等.道路网与兴趣点相结合的城市中心提取方法[J].测绘学报,2015,44(12):42-48.
4 韩向娣,周艺,王世新,等.夜间灯光遥感数据的GDP空间化处理方法[J].地球信息科学学报,2012,14(1):128-136.
5 王珂靖,蔡红艳,杨小唤.多元统计回归及地理加权回归方法在多尺度人口空间化研究中的应用[J].地理科学进展,2016,35(12):1494-1505.
6 潘竟虎,李俊峰.基于夜间灯光影像的中国电力消耗量估算及时空动态[J].地理研究,2016,35(4):627-638.
7 黄璐,杨英宝,朱琴.基于DMSP/OLS数据的南京市建成区扩展研究[J].地理空间信息,2018,16(1):94-99.
8 彭晨.夜间灯光概率密度分布模型研究及应用[D].上海:华东师范大学,2016.
9 唐敏.基于对数变换的NPP-VIIRS夜间灯光遥感影像在城市建成区提取中的应用[D].上海:华东师范大学,2017.
10 杜微.基于格网的等值线生成与填充算法研究[D].长沙:中南大学,2010.
11 张毅.城市形态的几何表征及量化方法研究[D].西安:西安建筑科技大学,2016.
12 陈少沛,丘健妮.广州城市通达性综合评价及空间差异[J].地理科学进展,2014,33(4):46-47.
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