中国多中心城市空间结构与能源效率关系

当前,北京、深圳、武汉等城市纷纷提出多中心的发展思路。作为城市建设的一项重要举措,多中心战略必须符合可持续发展目标,然而多中心结构是否有助于提高能源效率亟待检验。利用2017年我国地级及以上城市数据,分别运用改进的社会网络法和超效率EBM模型测度城市多中心度与城市能源效率,实证检验多中心度对城市能源效率的影响。研究发现：城市多中心度与能源效率之间存在倒“U”形变动特征。然而,仅有约25%的样本城市的多中心度突破了拐点,且这些城市主要为大型城市或受地形约束的山地城市,表明对于大多数中小城市而言,多中心度的提升能够促进城市的能源效率。

The relationship between polycentric urban spatial structure and energy efficiency of cities in China

Currently, Beijing, Shenzhen, Wuhan and other cities have put forward multi-center development ideas. As a crucial measure of urban construction, polycentric strategy must conform to the goal of sustainable development. Nevertheless, whether polycentric structure can improve the energy efficiency and promote the sustainable development of cities needs to be urgently tested. Based on the 2017 data of the prefecture-level and above cities in China, this paper respectively uses the improved social network method and the super-efficiency EBM model to measure urban polycentricity and urban energy efficiency, and empirically examines the impact of polycentric structure on urban energy efficiency. The results present a U-shaped pattern between urban polycentricity and urban energy efficiency. However, only about 25% of the sample cities can pass the inflection point, and they are mainly large cities or mountain cities constrained by terrain, indicating that for most small and medium-sized cities, the improvement of polycentricity can promote the energy efficiency of cities.