Li Zhi-Ying, Zhu Xiao-Shan, Yang Li, Wang Xiao-Yun
School of Architecture and Urban Planning, Yunnan University, Kunming 650091, China.
Huan Jing Ke Xue. 2024 Jun 8;45(6):3402-3411. doi: 10.13227/j.hjkx.202307260.
Studies on the spatio-temporal variation and coordinated development level of compactness with carbon emission intensity in the Chengdu-Chongqing urban agglomeration is of great significance to achieve green, low-carbon, and high-quality development of society. The spatial-temporal differentiation, coupling coordination, and driving factors of the compactness and carbon emission intensity of the Chengdu-Chongqing urban agglomeration from 2010 to 2020 were analyzed by using the methods of comprehensive evaluation, carbon emission identical equality, coupling coordination, and the Geo-detector model. The results showed that:① The compactness of the Chengdu-Chongqing urban agglomeration continued to rise from 0.18 in 2010 to 0.22 in 2020, with an overall increase of 22.22 %, in which the contribution rate of economic compactness to urban compactness increased yearly. There were significant regional differences in the compactness of cities. The high-value areas were concentrated in Chengdu, Deyang, and Mianyang in the northwest and Zigong, Neijiang, and Luzhou in the southwest, whereas the low-value areas were distributed in the middle. Ya'an was always the area with the lowest compactness of urban agglomeration. ② The carbon emission intensity of the Chengdu-Chongqing urban agglomeration was decreasing yearly, with a decrease rate of 39.57 % during the study period. The carbon emission intensity in the southern part of the urban agglomeration was higher than that in other regions as a whole, whereas Chengdu and Chongqing were low-value areas all the year round, and the regional differences of carbon emission intensity were gradually narrowing. ③ The coupling degree between urban compactness and carbon emission intensity changed from the antagonistic stage to the running-in stage; the coupling coordination degree increased notably, from 0.21 in 2010 to 0.69 in 2020; and the two systems gradually moved towards benign and coordinated development. The coupling coordination between the northwest of the urban agglomeration (Chengdu, Deyang, and Mianyang) and the south of Sichuan (Zigong and Luzhou) was generally high. Industrial structure, scientific and technological innovation, urbanization level, government intervention, and environmental livability all had significant effects on the coupling and coordination of the two systems. ④ Optimizing industrial structure, strengthening scientific and technological support, improving the quality of urbanization development, implementing active policy guidance, and building green barriers were effective ways to promote the coordinated development of compactness and low carbon in the Chengdu-Chongqing urban agglomeration.
研究成渝城市群紧凑度与碳排放强度的时空变化及协调发展水平，对实现社会绿色、低碳、高质量发展具有重要意义。运用综合评价法、碳排放恒等式法、耦合协调度模型和地理探测器模型，分析了2010—2020年成渝城市群紧凑度与碳排放强度的时空分异、耦合协调状况及其驱动因素。结果表明：①成渝城市群紧凑度由2010年的0.18持续上升至2020年的0.22，整体增幅为22.22%，其中经济紧凑度对城市紧凑度的贡献率逐年上升。城市紧凑度存在显著的区域差异，高值区集中在西北的成都、德阳、绵阳和西南的自贡、内江、泸州，低值区分布在中部，雅安一直是城市群紧凑度最低的区域。②成渝城市群碳排放强度逐年下降，研究期间下降率为39.57%。城市群南部的碳排放强度总体高于其他区域，成都和重庆常年为低值区，碳排放强度的区域差异逐渐缩小。③城市紧凑度与碳排放强度的耦合度由拮抗阶段转变为磨合阶段，耦合协调度显著提升，由2010年的0.21升至2020年的0.69，两大系统逐渐走向良性协调发展。城市群西北部（成都、德阳、绵阳）与川南（自贡、泸州）耦合协调度总体较高。产业结构、科技创新、城市化水平、政府干预和环境宜居性对两大系统耦合协调均有显著影响。④优化产业结构、强化科技支撑、提高城市化发展质量、实施积极政策引导、构建绿色屏障是促进成渝城市群紧凑度与低碳协调发展的有效途径。
