In the critical period of China's economic transformation and spatial remodeling towards high-quality development,it is the in-depth review of territorial utilization quality(TUQ)and its evolutionary issues that could provide a critical basis for building a spatial pattern for high-quality development,which is important for reversing the logic of spatial utilization formed in the high-speed growth stage and improving regional spatial governance.This research deepens the connotation of the territorial utilization quality by integrating the carrying objects,spatial users and the developing capacity generated by object-subject interactions,which could be manifested by territorial spatial structure,efficiency and vitality.Based on this understanding,this paper attempts to evaluate the territorial utilization quality of the Bohai Rim from 2010 to 2019 by adopting the entropy weight TOPSIS method.We aim to uncover the TUQ spatio-temporal variation and evolution pattern,as well as the main obstacle factors in the Bohai Rim through the kernel density estimation and the obstacle degree model.Results demonstrate that:(1)The comprehensive TUQ of the study area is growing slowly;the production,living and ecological TUQs show a spatially balanced evolution towards high levels,a steady improvement of each grade and a"fluctuating"decline,respectively.(2)The comprehensive TUQ of the whole region demonstrates a"tripod"high-value clustering trend,the production TUQ appears to collapse along the coast of Liaoning with low and medium values,the living TUQ shows a belt pattern of medium-high value agglomeration along the north coast,while the ecological TUQ decreases in the east and increases in the west,which is associated with an obvious fragmentation of high values.(3)The comprehensive TUQ of the Bohai Rim is mainly limited by the production space,highlighted by production efficiency and production vitality.Meanwhile,the impact intensity of obstacle factors regarding ecological structure,ecological efficiency and living vitality is increasing,with obvious regional divergence.This study provides a new perspective for deepening the theoretical cognition of the TUQ,as well as a scientific guideline for optimizing the evaluation of the TUQ.Moreover,this research may be conducive to the promotion of high-quality development in coastal regions.
territorial utilization qualityproduction-living-ecological spacespatio-temporal evolutionobstacle factorshigh-qualityBohai Rim