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Green building, a significant sustainable practice to enhance the relationship between buildings and the environment, has received much attention worldwide. Although green buildings spread fast around the world, the efficiency of resources for green building construction has great potential to improve. Meanwhile, the spatial correlations of green building construction need to strengthen to benefit from the spillover effects. However, only few previous studies focused on efficiency problems in the green building promotion process and their spatial correlations. This study aims to propose a framework to examine green building promotion efficiency and investigate its spatial relationships between regions in different time slices. As a case study, data from 28 regions in China were collected. Data envelopment analysis and social network analysis were used to analyze the data. Results show that the overall green building promotion efficiency in China increased gradually, but significant efficiency gaps existed among regions. Regional collaborations made great contributions to efficiency enhancement, especially in the Beijing-Tianjin-Hebei, Yangtze River Delta and Pearl River Delta areas. Furthermore, only a small proportion of regions performed well in the efficiency and spatial correlations, mainly in southeast China. Most regions had low efficiency and weak correlations with the developed regions. This study contributes to the knowledge body of green buildings by presenting the first investigation into the green building promotion efficiency and the spatial correlations in green building development. The findings would enable researchers, policymakers and practitioners to develop efficient policies and strategies to promote the widespread implementation of green buildings. [ABSTRACT FROM AUTHOR]

Resilient transportation provides a new perspective for constructing sustainable cities. Although current studies have analyzed transportation resilience from different perspectives, accurately assessing the resilience of urban transport systems remains a significant challenge. This paper proposes a framework to evaluate the static and dynamic resilience of urban transportation systems. Based on systemic thinking and sustainability perspectives, we establish a Bayesian network model that comprehensively considers social, economic, organizational, and technological dimensions to assess the static resilience of urban transportation systems. We adopt percolation theory to determine the minimum required performance (MRP) of road network and explore the spatial distribution of dynamic resilience based on traffic performance under traffic congestion. Results show that the transportation resilience of Xi'an showed a continuous growth trend between 2010 and 2020, from 0.37 to 0.64. In addition, the primary task of enhancing resilience is to improve the system's restorative capacity, adaptive capacity, and resourcefulness. The MRP of the road network is 0.37. The areas with larger resilience loss and percolation time are concentrated along the Second and Third Ring Expressway and in the south and southwest areas. The resilience of the urban center area is more potent. The time of the response process is twice that of the recovery process. The above results could help managers and decision-makers have a comprehensive and clear understanding of the transportation resilience and have practical significance for constructing a sustainable urban transportation system. • Proposing the static and dynamic resilience assessment framework for the urban transportation systems. • The static resilience of Xi'an showed a continuous growth trend between 2010 and 2020, from 0.37 to 0.64. • The primary task of enhancing resilience is to improve the restorative capacity, adaptive capacity, and resourcefulness. • The MRP of the road network is 0.37 and would be regarded as a new sustainable city index. • The dynamic resilience of the urban road network shows prominent local characteristics. [ABSTRACT FROM AUTHOR]

As the global climate change and the rapid progress of urbanization, the frequent occurrence of flooding disasters and non-point source pollution seriously threaten the sustainable development of modern cities. To alleviate these problems, China started to pilot construction of the "Sponge City" (SPC). Over a decade, it has attracted public attention, supports, and participations. The paper presents a literature review of sponge city construction (SPCC) process (planning, design and construction) as well as the assessment of SPC, including: operation, maintenance, and effectiveness. Research gap and future works are also proposed. The paper offers some tactics for SPCC, including: 1) in the planning and construction stage of SPC, the goals and systematic plans should be formulated according to local water-environmental conditions. The drainage plan should cover the strategy to dispose runoff volumes at sources and the ultimately goal for flood mitigation. The drainage design involves the combination of various green and grey infrastructures; 2) It is important to identify monitoring methods and hydrological models which can be used to assess the performance of a SPC. With adequate field data, all models and methods should be calibrated for not only runoff quantity and quality control but also the alleviation of urban heat island effects, including the base flows and local groundwater table; 3) Based on the regional field data, it is necessary to standardize regional design parameters, construction material specifics, and maintenance scheme and schedule that would significantly affect the facility's infiltrating and filtering processes, therefore, a regular maintenance program should be initiated to monitor the operations of the as-built facilities according to local climate conditions. The paper evaluated several maintenance methods for ten typical facilities to provide a reference for the operation and maintenance of facilities in SPCC. • The sponge city construction (SPCC) and design methods were introduced in detail. • Scientific and reasonable assessment can better guide the SPCCs. • The sponge city (SPC) facilities can be a better way to control stormwater runoff. • Monitoring and simulation method are equally important for assessing SPC effect. • A maintenance program should be initiated to monitor the operations of SPC facility. [ABSTRACT FROM AUTHOR]