长江中游城市群是我国第二大城市群,代表了我国典型的生态脆弱性土地空间范围。这一流域地区资源型与非资源型城市的经济发展方式存在较大差异。准确识别生产-生活-生态空间( PLES )的演变及其区域差异,对于阐明该区域土地空间的开发利用至关重要。目前,相关研究在很大程度上集中在PLES时空格局的分类和确定上。时空格局研究主要考虑单一尺度的行政区划,而较少研究分析生态脆弱的自然流域PLES的时空格局和区域差异。因此,在PLES分类的基础上,通过Theil指数和探索性空间数据分析( ESDA )来衡量流域内两类城市PLES的区域差异。首先,长江中游城市群两类城市的生态空间受到生产空间( PS )和生活空间( LS )的压缩,其中资源型城市的生态空间受到较长时间的压缩,而LS和ES涉及PS压缩的现象主要发生在长江中游城市群内部的非资源型城市。第二,这两类城市的PLES呈现出空间聚集的特征,PLES的高密度和低密度区域保持相对稳定。第三,长江中游城市群PLES的区域差异主要源于区域内差异。长江中游城市群两类城市的PLES对经济发展变化比对人口分布变化更为敏感。

The urban agglomeration in the middle reaches of the Yangtze River, which is the second largest urban agglomeration in China, represents a typical land space range of ecological vulnerability in China. Large differences occur in economic development mode between resource- and non-resource-based cities in this basin area. Accurate identification of the evolution and regional differences in the production-living-ecological space (PLES) is very important in order to elucidate the development and utilization of land space in the region. At present, relevant research has largely focused on the classification and determination of PLES temporal and spatial patterns. Temporal and spatial pattern research has mainly considered a single scale of administrative division, whereas fewer studies have analyzed the temporal and spatial patterns and regional differences in the PLES in ecologically fragile natural watersheds. Therefore, based on PLES classification, the regional differences in the PLES between two types of cities in the basin are measured via the Theil index and exploratory spatial data analysis (ESDA). First, the ecological space (ES) of these two types of cities in the urban agglomeration in the middle reaches of the Yangtze River is compressed by the production space (PS) and living space (LS), in which the ES of resource-based cities is compressed for a longer period, and the phenomenon involving PS compression by the LS and ES mainly occurs in non-resource-based cities within the urban agglomeration in the middle reaches of the Yangtze River. Second, the PLES of these two types of cities exhibits the characteristics of spatial aggregation, and high- and low-density areas of the PLES remain relatively stable. Third, the regional differences in the PLES of the urban agglomeration in the middle reaches of the Yangtze River mainly originate from intraregional differences. The PLES of these two types of cities in the urban agglomeration in the middle reaches of the Yangtze River is more sensitive to changes in economic development than to those in the population distribution.