中山大学学报(自然科学版) ›› 2020, Vol. 59 ›› Issue (1): 96-104.doi: 10.13471/j.cnki.acta.snus.2020.01.012

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珠江三角洲城市群生态安全空间分异与聚集特征

李淼,胡蒙蒙,夏北成   

  1. 中山大学环境科学与工程学院, 广东 广州 510275
  • 收稿日期:2019-02-28 出版日期:2020-01-25 发布日期:2020-02-28
  • 通讯作者: 夏北成(1957年生),男;研究方向:环境生态学与景观生态学; E-mail: xiabch@mail.sysu.edu.cn

Spatial differentiation and aggregation characteristics of ecological security of urban agglomeration in the Pearl River Delta 

LI Miao, HU Mengmeng, XIA Beicheng   

  1. School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2019-02-28 Online:2020-01-25 Published:2020-02-28

摘要: 珠江三角洲城市群是粤港澳大湾区的重要组成部分,在国家实施粤港澳大湾区建设的重大政策背景下,研究珠江三角洲城市群生态安全及其空间格局,具有重要意义。基于PSR概念模型构建珠江三角洲城市群生态安全评价体系,采用集对分析和空间自相关分析方法,探究城市群生态安全空间异质性及聚集特征。结果表明:珠江三角洲城市群受城市化的影响,生态安全水平呈现出较显著的空间差异,其空间分布特征为中部城市化水平较高的区域生态安全水平显著低于外围区域,外围区域对于中心区域形成一个生态屏障;生态安全水平与区域经济发展有显著关系,生态安全水平与经济发展水平在空间上呈现负相关状态;生态安全在城市间呈现 “低—高”或“高—低”集聚态势,生态安全较高的城市趋于和生态安全较低的城市相邻,呈现互补空间格局。这一空间分异和聚集特征对于珠江三角洲城市群以及大湾区的未来生态规划、城市生态建设和生态管理具有较重要的指导意义。


关键词: 集对分析, Moran‘’s , I指数, 空间分异, 生态安全, 珠江三角洲城市群

Abstract: The Pearl River Delta (PRD) urban agglomeration is an important part of the Guangdong-Hong Kong-Macao Greater Bay. It is of great significance to study the ecological security and spatial pattern of the PRD urban agglomeration under the background of the national policy of implementing the construction of the Guangdong-Hong Kong-Macao Greater Bay. The ecological security evaluation system of urban agglomeration was constructed in the PRD based on the PSR conceptual model, and the set pair analysis and spatial autocorrelation analysis methods were applied to analyze the spatial heterogeneity and aggregation characteristics of urban agglomeration ecological security. The results show that the PRD is affected by urbanization, and the ecological security level shows an obvious spatial differentiation. The ecological security level of the central area, where it highly urbanized, is significantly lower than that of the peripheral area. The peripheral area forms an ecological barrier to the central area. The level of ecological security has a significant relationship with regional economic development, and the level of ecological security and economic development are negatively correlated in space. The clustering of ecological security in cities shows a “low-high” or “high-low” agglomeration situation. Cities with higher ecological security tend to be adjacent to cities with lower ecological security, showing a complementary spatial pattern. This spatial differentiation and aggregation characteristics have important guiding significance for the future ecological planning, urban ecological construction and ecological management of the urban agglomerations of the PRD and Guangdong-Hong Kong-Macao Greater Bay. 


Key words: set pair analysis, Moran’s I ,  , index, spatial differentiation, the ecological security, urban agglomeration of the Pearl River Delta

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