The Multi-Center Spatial Structure in the Guangdong-Hong Kong-Macao Greater Bay Area Urban Agglomeration Based on Luojia1-01 Nighttime Light Data and POI Data
Received date: 2021-09-11
Revised date: 2022-01-07
Online published: 2022-03-21
The Guangdong-Hong Kong-Macao Greater Bay Area (referred to as "GBA") is an important strategic deployment for China's current economic development. Clarifying the spatial structure characteristics of the GBA urban agglomeration is conducive to optimizing its spatial structure to develop into a multi-center network spatial structure and promoting coordinated regional development. This study uses the advantage of Luojia1-01 nighttime light data, which can distinguish the difference in urban night light intensity. Through multi-scale segmentation of nighttime light intensity, the potential center range is established. The point of interest (POI) data are used for spatial autocorrelation analysis and geographically weighted regression to identify the multi-center distribution of the GBA urban agglomeration, and to analyze its spatial structure characteristics from multiple perspectives such as functional structure identification, spatial correlation measurement, and main center service range. The following list illustrates what the results show. 1) The GBA has five main centers and 14 sub-centers, including the main centers of Guangfo, Shenguan, Hong Kong, Aozhu, and Zhongshan. The functional structures of the five main centers are mainly mixed functional areas, and 14 sub-centers (such as Huadu, Zengcheng, Conghua, Huicheng, Duanzhou, Xinhui, Shiqi) are distributed around the periphery of the main centers. 2) The correlation strength of the five main centers and nine cities plus two special administrative regions in the urban agglomeration, calculated based on the Luojia1-01 nighttime light data, shows characteristics of "strong in the east and weak in the west" and "strong inside and weak outside." 3) The study considered the distribution of the main centers of the urban agglomeration and their spatial correlation strength characteristics, as well as the three groups served by the main centers (Guangfozhao group, Gang-Shenguanhui group and Ao-Zhuzhongjiang group), combined with the planning requirements of the "Outline Development Plan for the Guangdong-Hong Kong-Macao Greater Bay Area" and "Guangdong Province Land and Space Planning (2020-2035)." The findings suggest that the GBA should build a regional spatial structure of "five centers, one area, three groups and four axes" to achieve pole-driven, axis-supported, and group cooperation and promote its coordinated development into a world-class urban agglomeration.
Qiuying Zhi , Jieying Chen , Yingchun Fu , Biyun Guo . The Multi-Center Spatial Structure in the Guangdong-Hong Kong-Macao Greater Bay Area Urban Agglomeration Based on Luojia1-01 Nighttime Light Data and POI Data[J]. Tropical Geography, 2022 , 42(3) : 444 -456 . DOI: 10.13284/j.cnki.rddl.003455
表1 不同夜间灯光数据参数比较Table 1 Comparison of different nighttime light data parameters |
| 夜光数据 名称 | 发射 国家 | 重访 周期 | 数据位数/bits | 空间分 辨率/m | 在轨时间 | 幅宽/ km |
|---|---|---|---|---|---|---|
| DMSP/OLS | 美国 | 12 h | 6 | 2 700 | 1992—2013年 | 3 000 |
| VIIRS-DNB | 美国 | 12 h | 14 | 740 | 2011年至今 | 3 000 |
| 珞珈一号 | 中国 | 3~5 d | 15 | 130 | 2018年至今 | 250 |
图2 粤港澳大湾区主中心与副中心分布(a. 基于珞珈一号数据划分的空间单元内POI密度;b. 粤港澳大湾区主副中心识别结果)Fig.2 The distribution of main centers and sub-centers in the Guangdong-Hong Kong-Macao Greater Bay Area (a. POI density in space units based on Luojia1-01 data; b. Identification result of the main and sub-centers in the Guangdong-Hong Kong-Macao Greater Bay Area) |
表2 粤港澳大湾区各城市与主中心空间关联等级数量统计Table 2 Level and quantity statistics of spatial correlation between cities and the main centers in the Guangdong-Hong Kong-Macao Greater Bay Area |
| 城市 | 一级联系 | 二级联系 | 三级联系 | 四级联系 | 五级联系 |
|---|---|---|---|---|---|
| 总计 | 3 | 11 | 25 | 14 | 2 |
| 广州市 | 1 | 1 | 3 | ||
| 深圳市 | 1 | 2 | 1 | 1 | |
| 香港特别行政区 | 1 | 1 | 2 | 1 | |
| 佛山市 | 2 | 3 | |||
| 东莞市 | 2 | 3 | |||
| 中山市 | 2 | 3 | |||
| 惠州市 | 1 | 2 | 2 | ||
| 珠海市 | 3 | 2 | |||
| 江门市 | 3 | 2 | |||
| 肇庆市 | 2 | 2 | 1 | ||
| 澳门特别行政区 | 4 | 1 |

1 资料来源:粤港澳大湾区门户网. http://www.cnbayarea.org.cn/.
2 http://www.hbeos.org.cn/
3 https://www.amap.com/
4 https://www.gscloud.cn/
5 https://www.worldpop.org/
植秋滢:提出研究构想,数据分析、论文撰写;
陈洁莹:数据分析与制图,论文撰写;
付迎春:提出研究构想、修改论文;
郭碧云:提供数据与研究建议,修改论文。
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