Research on Spatiotemporal Evolution of Urban Construction Land Efficiency in the Yangtze River Delta Region Based on SBM-Undesirable Model
Under the constraints of environmental factors,the efficiency of construction land use has become the focus of research on urban-rural spatial development under high-quality development.Taking the urban construction land of cities at or above the prefecture level in the Yangtze River Delta region as the research object,the SBM-Undesirable model and the global reference method are used to measure the efficiency of urban construction land use and dynamically analyze its spatiotemporal evolution characteristics.The research results show that:(1)The combination of the SBM-Undesirable model and the global reference method can solve the limitations of qualitative evaluation of spatiotemporal characteristics of the Malmquist index;(2)From 2011 to 2019,the efficiency of urban construction land use in the Yangtze River Delta region showed an increasing trend,but the change trend exhibited a"U-shaped"evolutionary feature;(3)The spatial pattern evolution of urban construction land efficiency was relatively dramatic,with low-efficiency areas showing a"surface-scattered"development pattern,while high-efficiency areas showed a"scattered point-reverse K-shaped network"development pattern;(4)Corresponding adjustments can be made based on the redundancy degree of non-efficient urban areas to promote green and high-quality development of cities.Finally,relevant countermeasures and recommendations are put forward to improve the urban construction land efficiency in Yangtze River Delta region.
urban construction land efficiencySBM-Undesirableenvironmental constraintsspatiotemporal evolutionYangtze River Delta region
NETL
NSTL
万方数据
