Abstract
Revealing the spatial differences and convergence mechanism of urban land use efficiency (ULUE) under the background of regional integration is of great significance for exploring the coordinated promotion path of ULUE. We attempted to build a theoretical framework to interpret ULUE spatial convergence under the background of regional integration and build a ULUE “green” evaluation system under multi-objective constraints. Based on this, we employed the super efficiency slack-based model (SBM), exploratory spatial data analysis, and spatial convergence model incorporated into the spatial weight matrix to re-examine the true level, spatial differences, and convergence mechanism of ULUE in the Yangtze River Economic Zone from 2003 to 2019 on a city scale. The results show that: (1) during the investigation period, ULUE in the Yangtze River Economic Zone has obvious spatial disequilibrium and spatial correlation characteristics; (2) there are absolute β-space convergence and conditional β-space convergence of ULUE in the whole Yangtze River Economic Zone and its upstream, midstream, and downstream areas; (3) driven by government management, industrial development, and spatial error effects, the convergence time of ULUE in the whole Yangtze River Economic Zone and its upstream, midstream, and downstream areas is obviously shortened.
Highlights
Regional integration will contribute to the free flow of various elements between cities and rational optimization of industrial structure within regions, which is an effective way to promote the green growth of urban land use efficiency [2,3,4,5]
Under the realistic background that regional integration has risen to a national strategy, we urgently need to re-examine urban land use efficiency (ULUE) and its spatio-temporal evolution characteristics
Compared with the existing research, the possible contribution of this paper is to build a theoretical framework of spatial convergence of ULUE under the background of regional integration and to construct a “green” evaluation system of ULUE with multi-objective constraints
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Urban land has become a non-negligible source of carbon and pollutants while utilizing and embodying its production, living, and ecological functions [16,17,18] Based on understanding this objective fact, Yang [13] and Yue [19] incorporated the industrial “three wastes” emissions into the “input + expected output + unexpected output”. These research results provide literature support and method reference for us to explore the spatial differences and convergence mechanism of ULUE under the background of regional integration. Economic Zone as the research object and analyzed the basic level and spatial differences characteristics of ULUE by adopting the super efficiency SBM model and exploratory spatial data analysis model on the basis of considering multi-objective constraints such as energy-saving, emissions reduction, and low carbon. The research results are intended to find out the real situation of ULUE in the Yangtze River Economic Zone and provide empirical support and policy enlightenment for exploring the coordinated development mode of urban land
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