实现城市的绿色发展是缓解当前“大城市病”愈演愈烈的现实迫切需求，同样也是实现国家可持续发展、高质量发展的重要一环。而城市要想实现资源节约型、环境友好型的发展模式，势必离不开智慧城市的建设。智慧城市的提出为解决城市发展问题提供了新的路径，不仅智慧城市本身包含了绿色发展的理念，而且智慧城市的各系统建设也多方面地影响了城市的绿色发展水平。因此，研究智慧城市建设对城市绿色发展产生何种影响，对于智慧城市建设的科学规划，实现资源节约和环境保护的生产生活方式，以及促进人类社会发展与自然社会发展相协调，都有着重要的意义。

本文在对智慧城市和绿色发展的概念界定的基础上，建立了智慧城市评价指标体系和城市绿色发展指标体系，对中西部地区智慧城市建设和城市绿色发展水平进行了全方位的综合评价，并以四大中西部城市群为研究样本，运用了灰色关联分析法实证检验智慧城市的建设与城市绿色发展水平的关联程度，研究了中西部四大城市群反映的不同关联特征。研究结论表明：（1）智慧城市建设是一个系统工程，包含了智慧基础设施、智慧产业、智慧公民、智慧区位、智慧治理服务等五个系统，各个系统都从不同角度对城市绿色发展水平产生影响，其中智慧区位产生了核心影响；（2）中西部智慧城市发展呈现层次分级，且城市群内部智慧协同程度不足。西安、成都、重庆、武汉和郑州作为 “智慧领跑城市”发挥着重要的引领带动作用，其它城市则智慧水平相对较低，还未形成对中心城市强劲的支撑力；（3）中西部城市绿色发展水平分布较为集中，大部分城市还处于绿色发展初级阶段，而城市群内部绿色发展水平呈现较大分层，城市群内部的绿色发展协同度低；（4）中西部智慧城市建设与城市绿色发展的关联关系为：2012-2020年智慧治理服务对城市绿色发展的影响最强，智慧区位次之，而智慧基础设施、智慧公民、智慧产业对城市绿色发展的影响力较弱。（5）中西部四大城市群的智慧城市建设与绿色发展的关联关系为：从城市群内部关联度来看，关中平原城市群、成渝城市群、武汉城市群和中原城市群的智慧治理服务和智慧区位对绿色发展的影响最强。城市群间比较来看，关中平原城市群在智慧基础设施、智慧公民和智慧产业对城市绿色发展的影响上具有比较优势，中原城市群在智慧区位方面具有比较优势，而成渝城市群在智慧治理服务方面具有比较优势。基于本文实证结果，提出三条对策建议，分别是：整体规划布局，发挥区位优势；健全发展机制，提升发展质量；立足城市群，建设智慧城市等。

Achieving the green development of cities is an urgent need to alleviate the current "big city disease" intensifying, and it is also an important part of achieving sustainable and high-quality development of the country. In order to realize a resource-saving and environment-friendly development model, cities cannot do without the construction of smart cities. The proposal of smart city provides a new way to solve the problem of urban development. Not only does smart city itself contain the concept of green development, but the construction of various systems in smart city also affects the level of green development of the city in many ways. Therefore, it is of great significance to study the impact of smart city construction on the green development of cities, for the scientific planning of smart city construction, to realize the production and lifestyle of resource conservation and environmental protection, and to promote the coordination between the development of human society and the development of natural society.

On the basis of defining the concepts of smart city and green development, this paper establishes a smart city evaluation index system and an urban green development index system, and conducts an all-round comprehensive evaluation of the smart city construction and urban green development level in the central and western regions, and taking the underdeveloped smart city agglomerations in the central and western regions as research samples, using the grey relational analysis method to empirically test the degree of correlation between the construction of smart cities and the level of urban green development, as well as the different correlation characteristics reflected in the four major urban agglomerations in the central and western regions. The research conclusions show that: (1) Smart city construction is a systematic project, including five systems: smart infrastructure, smart industry, smart citizens, smart location, and smart governance services. Each system has an impact on the level of urban green development from different perspectives, among which the smart location has a core impact; (2) The development of smart cities in the central and western regions is hierarchical, and the degree of smart coordination within the urban agglomeration is insufficient. Xi'an, Chengdu, Chongqing, Wuhan, and Zhengzhou play an important leading role as "smart leading cities". Other cities have relatively low levels of intelligence and have not yet formed a strong support for central cities; (3) The distribution of green development levels in the central and western cities is relatively concentrated, and most cities are still in the primary stage of green development, while the green development levels within urban agglomerations are relatively stratified, and the coordination degree of green development within urban agglomerations is low; (4) The relationship between the construction of smart cities in the central and western regions and the green development is as follows: From 2012 to 2020, the impact of smart governance services on urban green development is the strongest, followed by smart areas, while the impact of smart infrastructure, smart citizens, and smart industries on urban green development is weak. (5) The relationship between smart city construction and green development in the four major urban agglomerations in the central and western regions is as follows: From the perspective of the internal correlation of the urban agglomeration, among the Guanzhong Plain urban agglomeration, the Chengdu-Chongqing urban agglomeration, the Wuhan urban agglomeration and the Central Plains urban agglomeration, the impact of smart governance services and smart location on green development is most strongest. In comparison between urban agglomerations, the Guanzhong Plain urban agglomeration has comparative advantages in terms of smart infrastructure, smart citizens and smart industries for urban green development.The Central Plains urban agglomeration has comparative advantages in terms of smart location, while the Chengdu-Chongqing urban agglomeration has comparative advantages in terms of smart governance services. Based on the empirical results of this paper, three countermeasures and suggestions are put forward, namely: overall planning and layout, giving full play to location advantages; improving development mechanism and improving development quality; based on urban agglomerations, building smart cities, etc.

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