生态与农村环境学报 ›› 2021, Vol. 37 ›› Issue (9): 1147-1157.doi: 10.19741/j.issn.1673-4831.2020.0429

• 区域环境与发展 • 上一篇    下一篇

基于1998-2017年夜间灯光数据的粤港澳大湾区核心区城市建成区时空动态研究

陆永权1, 冼宇阳1, 刘桂林1,2   

  1. 1. 华南师范大学地理科学学院, 广东 广州 510631;
    2. 华南师范大学地理科学学院广东省智慧国土工程技术研究中心, 广东 广州 510631
  • 收稿日期:2020-06-04 出版日期:2021-09-25 发布日期:2021-09-18
  • 通讯作者: 刘桂林 E-mail:liuguilin@m.scnu.edu.cn
  • 作者简介:陆永权(1998-),男,广东广州人,主要研究方向为环境遥感与地理信息系统。E-mail:lyq98@scnu.edu.cn
  • 基金资助:
    广东省科技计划(2018B020207002);国家自然科学基金(41901349);华南师范大学青年拔尖人才启动基金(8S0472);广东省普通高校青年创新人才类项目(2018KQNCX054);2019-2020年度华南师范大学课外科研一般项目(19DKGB04)

Spatial and Temporal Dynamics of Urban Build-up Area in the Core Area of Guangdong-Hong Kong-Macao Greater Bay Area Based on Nighttime Lighting Data During 1998-2017

LU Yong-quan1, XIAN Yu-yang1, LIU Gui-lin1,2   

  1. 1. School of Geography, South China Normal University, Guangzhou 510631, China;
    2. Guangdong Provincial Center for Smart Land Research, School of Geography, South China Normal University, Guangzhou 510631, China
  • Received:2020-06-04 Online:2021-09-25 Published:2021-09-18

摘要: 随着城市化进程的推进,城市扩张加剧了人地关系的矛盾,调整和优化城市空间格局成为城市发展的重要举措。基于DMSP-OLS和NPP-VIIRS夜间灯光数据,利用GIS空间分析方法和城市扩张指标,揭示了粤港澳大湾区核心区城市建成区1998-2017年间的时空变化过程,并定量分析了其驱动机制。结果表明:研究区城市建成区面积总体呈现上升趋势,但扩展速度呈现明显的下降趋势。整体上,粤港澳大湾区核心区城市建成区的紧凑度随时间推移而降低,分形维数虽处于波动状态,却基本保持不变。1998-2017年间,粤港澳大湾区核心区城市建成区扩张在空间分布上呈"西北-东南"方向,重心逐渐向西北移动。此外,城市扩展模式呈现"扩散-凝聚-扩散"的波动状况。自然因素和社会经济因素均与城市建成区的扩展具有明显的相关关系,并且在不同时期其影响程度也存在差异。

关键词: 城市建成区, 空间格局, 扩展模式, 夜间灯光数据, 粤港澳大湾区核心区

Abstract: With the progress of urbanization, urban expansion has exacerbated the contradiction between human beings and natural ecosystems. Thus, optimizing the urban spatial pattern has become an important measure for the sustainable urban development. Based on DMSP-OLS and NPP-VIIRS nighttime lighting data, the urban built-up areas of the core area of Guangdong-Hong Kong-Macao Greater Bay Area (GBA) from 1998 to 2017 were extracted. Then the GIS spatial analysis methods and a series of urban expansion indicators were employed to reveal the spatial and temporal changes of built-up areas of the core area of GBA and their driving mechanisms were quantitatively analyzed. The results show that urban built-up areas in the core area of GBA generally showed an upward trend while the rate of expansion showed a significant downward trend. Overall, the closeness of the urban built-up area in the core area of GBA decreased with time and the fractal dimension basically remained unchanged despite the fluctuations. During 1998-2017, the expansion of the urban built-up area in the core area of GBA spatially showed a "northwest-southeast" direction. Meanwhile, the center gradually moved towards the northwest. In addition, the urban expansion pattern presented a diffusion-condensation-diffusion oscillation. Physical factors and socio-economic factors had obvious correlation with the expansion of urban built-up areas while their influences varied within different periods.

Key words: urban built-up area, spatial pattern, expansion pattern, nighttime lighting data, the core area of Guangdong-Hong Kong-Macao Greater Bay Area

中图分类号: