In the context of the global Sustainable Development Goals, the study of tourism eco-efficiency (TE) becomes particularly important for the balance between environmental protection and economic development in tourist destinations. This paper improves the measurement method of tourism carbon emissions, uses the Super-SBM model of undesired output to measure China’s TE, and then explores the impact of new urbanization (NU) on TE. The results show that TE in China is in dynamic equilibrium in general, the agglomeration characteristics of efficiency changed from high in the east and low in the west to low in the south and high in the north, and developmental differences first increased and then decreased. NU development has a significant one-way positive impact on TE at the national level and in the eastern region. As far as impact, economic urbanization plays a great role, and ecological factors become more and more important. NU has a rapid and long-term impact on TE, and its contribution rate to developed economic regions can reach 35%. This study will provide an important reference for sustainable development of tourism under the trend of urbanization.

Title:Environmental Regulation, Technological Progress and Carbon Emission Efficiency: An Empirical Analysis Based on Panel Data of Chinese Provinces;China faces the key issue of improving the efficiency of carbon emissions, in its endeavor of building a low-carbon economy and reducing carbon emissions. This paper adopts the super-slack-based measure (SBM) model with a bad output to measure the carbon emission efficiency of each Chinese province from 2000 to 2019, and further uses the Tobit model to analyze the impact of environmental regulation, technological progress, and the interaction between the two on carbon emission efficiency. The results show that: China's carbon emission efficiency presents a large inter-provincial difference. Only a few provinces like Shanghai and Beijing reached the efficient frontier, while all the other provinces failed to do so. Overall, most Chinese provinces have a huge potential for improving carbon emission efficiency. By dividing China into three regions, it could be seen that the eastern region had the highest carbon emission efficiency, followed in turn by the central region and the western region. According to the spatiotemporal variation of carbon emission efficiency, most provinces with a high carbon emission efficiency belong to the economically developed eastern region, while most central and western provinces did not realize satisfactory carbon emission efficiency. With the elapse of time, the carbon emission efficiency in most provinces declined to varied degrees, while that of a few provinces was on the rise. The results of the Tobit model show that both environmental regulation and technological progress both significantly promoted carbon emission efficiency, but their cross term clearly suppressed carbon emission efficiency. When it comes to the control variables, carbon emission efficiency has a significantly positive relationship with opening-up, and a significantly negative relationship with industrial structure, financial development, energy structure, and urbanization level.

With the proposal of the “carbon peak, carbon neutral“ goal, energy efficiency has become one of the key means to achieve energy conservation and emission reduction at this stage. The construction industry, as a cornerstone of China’s economy, is characterized by serious overcapacity, energy waste, and pollution. As a result, academic research on its energy efficiency is gaining traction. This paper employed the Super-EBM model considering undesirable output to evaluate the green total-factor energy efficiency of the construction industry (CIGTFEE) in the Yangtze River Economic Belt (YREB) from 2003 to 2018. The spatial-temporal evolution characteristics and spatial heterogeneity of CIGTFEE were analyzed in detail through geospatial analysis. Finally, the driving factors of CIGTFEE were analyzed through a spatial econometric model. The results indicated that, during the sample research period, the CIGTFEE showed a holistic growth trend with volatility. By region, the downstream CIGTFEE grew sharply until 2006 and then remained fairly stable, while the midstream conformed to the “M” trend and the upstream region showed an inverted u-shaped trend; From the perspective of spatial differentiation, the CIGTFEE in YREB shows a significant spatial agglomeration situation, while the spatial agglomeration degree weakened. It existed a ladder-shaped change trend, with the regional average CIGTFEE from high to low levels as follows: Downstream, Midstream, and Upstream, and showed an obvious polarization in the upstream and downstream. From the analysis of the driving factors, CIGTFEE is significantly promoted by economic growth, energy structure, and human capital and suppressed by urbanization level, yet the impact of technological progress and the level of technology and equipment is not significant. In summary, province-specific policies based on spatial and temporal heterogeneity were proposed to improve the CIGTFEE of YREB.