Spatial-Temporal Characteristics Analysis of the Green High-Quality Development in the Hohhot-Baotou-Erdos-Yulin Urban Agglomeration

基于生态保护和高质量发展的新模式，从绿色低碳、绿色协调和绿色共享发展3个维度，构建了呼包鄂榆城市群的绿色高质量发展评价指标体系，搜集2013~2022年4座城市的指标数据，借助熵值法对各项指标赋权，并研究绿色高质量发展指数的时空演变特征，运用基尼系数和收敛模型来评估呼包鄂榆城市群的时序变化规律。研究表明：(1) 呼包鄂榆城市群绿色高质量发展指数在时间上呈现明显的下降趋势。(2) 呼包鄂榆城市群绿色高质量发展指数在空间上表现出“榆林发达、呼包居中、鄂尔多斯落后”的分布特征。(3) 榆林、鄂尔多斯和包头的各维度发展指数均下降。(4) 呼包鄂榆城市间的绿色高质量发展差异较小且有收敛趋势。基于此，提出提升呼包鄂榆城市绿色高质量发展的对策建议。Based on the new model of ecological protection and high-quality development, this paper perfected the evaluation index system of green high-quality development from three dimensions of green low-carbon development, green coordinated development and green shared development for the Hohhot-Baotou-Ordos-Yulin urban agglomeration. The index data of four cities from 2013 to 2022 were collected. The entropy method is used to weight each index, and the spatial and temporal evolution characteristics of the green high-quality development index are studied. The Gini coefficient and σ convergence model are used to evaluate the temporal variation pattern of the Hohhot-Baotou-Ordos-Yulin urban agglomeration. The research shows that: (1) The green high-quality development index of Hohhot-Baotou-Ordos-Yulin urban agglomeration shows a significant downward trend with time. (2) The Hohhot-Baotou-Ordos-Yulin urban agglomeration shows the spatial distribution characteristics of “Yulin’s green high-quality development index is the largest, followed by Hohhot and Baotou, and that of Ordos is the smallest”. (3) Yulin, Ordos and Baotou have declined in the development index of green low-carbon development, green coordinated development and green shared development. (4) The green high-quality development between the cities of Hohhot, Baotou, Erdos, and Yulin shows a little difference and a convergence trend. Based on this, the countermeasures and suggestions for improving the green high-quality development of Hohhot-Baotou-Ordos-Yulin city are put forward.