As one of the bibliometric analysis tools, CiteSpace software was applied to quantitatively and visually evaluate global scientific documents of research on haze from 2000 to 2016. Five thousand six hundred six documents from the Science Citation Index Expanded (SCI-Expanded) and Social Science Citation Index (SSCI) of the Web of Science database were statistically analyzed and examined. The distributions on authorship, countries/territories, institutes, and keywords were generated. The amount of publications has increased nearly for the past 17 years. The most productive author was Li J. with 46 articles. The publications on haze research were primarily originated from the USA, China, Germany, and France. By synthetically analyzing the keywords, the dominant hot spots of haze research could be concluded as “aerosol,” “atmosphere,” “particle,” “PM_2.5,”and “air quality.”

The implementation of the Beijing, Tianjin, and Hebei coordinated development strategy has seriously increased the influence of land use and urban traffic. Thus, understanding the coordination between urban land and transportation systems is important for the efficient and sustainable development of cities, especially in this rapidly urbanizing era. Urban–industrial land and highway networks are, respectively, primary types of urban land and transportation systems, and have significant impacts on social and economic development. However, limited studies have been conducted to examine the relationships between urban–industrial land and highway networks. Therefore, this paper aims to examine the coupling coordination relationship between urban–industrial land use efficiency, and the accessibility of the highway networks of cities. Specifically, in the context of the Beijing–Tianjin–Hebei (BTH) urban agglomeration, the coupling coordination between urban-industrial land use efficiency and accessibility of the highway traffic network was empirically analyzed. The results show that: (i) The differences in urban-industrial land use efficiency in the BTH region are significant. Capital cities in the BTH urban agglomeration have higher economic, social, and comprehensive efficiency, while in industrial cities, the use of urban–industrial land should prioritize ecological and environmental issues. (ii) Because of its good geographical location Beijing has the best accessibility, with an accessibility index of 1.416, while Qinhuangdao had the lowest accessibility index of 0.039. (iii) In most BTH cities, the urban-industrial comprehensive land use level has fallen behind the highway network development level. The results of this study can provide references for the coordinated development of the BTH urban agglomeration.

Cultural heritage tourism (CHT) has become an important part of the tourism industry. Therefore, it is essential to evaluate the sustainability of CHT destinations for tourism development. The majority of existing studies have examined the destination sustainability of ecotourism with the considerations of three stakeholder groups, namely, resource administration, tourist, and local community. However, the impact of tourism enterprises on destination sustainability has been constantly ignored in CHT-related studies. To fill these gaps, this study aims at developing an indicator system for comprehensively assessing the sustainability of CHT destinations. Specifically, this study identified an evaluation indicator system based on the Delphi technique and applied it to the context of Pingyao Ancient City in China. Results demonstrated that scores obtained by all four stakeholder groups ranged between 3.0 and 4.0 and the overall sustainability score was only 63.94, indicating that Pingyao was in the “somewhat sustainable” state according to the criteria (0−25, unsustainable; 25−50, somewhat unsustainable; 50−75, somewhat sustainable; 75−100, sustainable) specified in previous studies. A more balanced outcome should be achieved where each stakeholder’s interests are fully considered, but not at the expense of the others. The findings are of great significance for heritage tourism literature and sustainable destination management.