环北部湾城市群城市生态位测度评价

Urban Niche Metrics of the Urban Agglomeration in Beibu Gulf Rim

以环北部湾城市群内城市为研究对象,利用因子分析法、城市生态位宽度模型和生态位重叠指数模型分析研究城市群内城市生态位的空间分布和发展变化,探究城市群发展特征和存在的问题。从生态位宽度来看,城市群内形成以南宁市为发展核心,东部地区为发展活跃区的空间布局形态;从发展变化来看,沿海经济成为城市群经济发展的主要驱动因素。生态位重叠指数方面,除海口、三亚外,各城市间数值较高,城市间竞争大于合作,区域合作体系尚未建立。最后基于研究成果,本文提出环北部湾城市群发展建议。

Taking urban agglomeration in Beibu Gulf Rim as a case study,the characteristics and issues of urban agglomeration were explored by the factor analysis and niche breadth model and overlap index model to analyze the spatial distribution of urban ecological space.The niche breadth shows that in urban agglomeration spatial arrangement,Nanning has turned into the core city and eastern area has become developing vitality region.The result of development represents that coastal economy has become the main economic driving factors.Overlap index indicates that competitionare greater than cooperation among cities and regional cooperation system has not been established in Beibu Gulf Rim.Finally,based on the results of the research,some advice are put forward to develop the urban agglomeration in Beibu Gulf Rim.