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Constructing an eco-civilization is crucial in achieving green, low-carbon development, and thus bridging the gap between theory and practice is imperative to better promote urban ecological transformation. At present, there are inconsistencies and imbalances between theoretical research and practical efforts to achieve an eco-civilization. This paper uses bibliometric analysis and Latent Dirichlet Allocation to analyze China's progress towards an eco-civilization at the theoretical and practical levels. The 'theory' is analyzed using 632 articles, while the 'practice' is analyzed using 100 eco-civilization pilot zone reports. The two are compared, with results showing: from 2015 onwards, the theory is moving in an interdisciplinary direction, with seven themes focusing on macro topics. eco-civilization construction projects have multiple overlapping themes, and the growing connection between energy consumption, economic growth and environmental impacts driven by significant projects is the key to improving the level of regional ecological development. the theory and practice are similar in that both are concerned with environmental protection, ecological education, and ecotourism. However, eco-civilization construction projects lack forward-looking and dynamic development tracking of low-carbon research. the paper proposes that dynamic evaluation and project tracking methods should be applied to monitor critical indicators to achieve a solid link between the theory and practice during eco-construction projects. This paper also proposes academia should do more research on townships and other micro level phenomena to promote climate change and energy revolution in the construction of a Chinese eco-civilization. • Analysis of the similarities and differences between theoretical research and practical measures of eco-civilization. • Academic research focuses on sustainability, while practical activities lack attention to climate change. • Optimizing the energy-economy-environment integration project is the key to improving China's ecology. • Environmental protection, eco-civilization education, and eco-tourism are common concerns in the theory and practice. • Suggestions include focusing on crucial indicators and micro-level activities. [ABSTRACT FROM AUTHOR]

Due to the massive use of antibiotics, antibiotics resistance genes (ARGs) are widely present in organic solid wastes (OSWs) such as livestock manure and sludge. As a common recycling technology, composting is often used to eliminate ARGs from OSWs. However, there is no bibliometric perspective on the fate of ARGs during OSWs composting to reveal the current state and future directions in this field. In this study, CiteSpace and VOSviewer were applied to count the available data from 2000 to 2021 in Web of Science to review the development and characteristics of relevant research. The results showed that the number of relevant papers and citations has increased consistently, with institutions and authors from China being the main contributors. The research belongs to the multidisciplinary with a focus on the environmental sciences ecology, and the results were mainly published in Bioresource Technology. Moreover, crucial literatures were screened to explore the framework within which the subject was constructed. Based on keyword analysis, the bacterial community was highlighted, and the research hotspots were revealed on the occurrence, affect factors including physicochemical properties, microbial community, MGEs, antibiotic, and heavy metal, and reduction strategies including exogenous additive, microbial inoculant, and improved process, as well as the spread of ARGs in soil. This study provides the first review and summary of the hotspots, current challenges, and future directions of the fate of ARGs during OSWs composting based on bibliometric analysis, which could provide significant insights for effective control of the spread of ARGs from OSWs. • First bibliometric analysis of the fate of ARGs during composting. • Relevant research burst in recent years, with China being the main contributor. • Bacterial community is the keywords most closely related to ARGs in composts. • Review the hotspots of research on the fate of ARGs during composting. • Propose the current challenges and future directions in the field. [ABSTRACT FROM AUTHOR]

The study of household carbon emissions (HCEs) has become one of the most important topics in sustainability research due to the growing awareness of its significances in responding to global warming. This paper aims to identify the trends and characteristics of HCEs research for the period 1993–2019 through the bibliometric analysis approach. The impacts of most productive journals, countries, institutions and authors are evaluated by citation analysis, while the co-authorship network between various countries, institutions as well as the co-occurrence among different keywords are presented. The results of this paper provide a detailed picture on HCEs-related articles from 1993 to 2019. Both the number of publications on HCEs and the cooperation among countries and institutions have increased during the period. Keyword analysis suggests that the revelation of current status of HCEs and corresponding influencing factors are the main lines of HCEs research, and the prediction of HCEs should become the focus of future research. The valuable results obtained from this study can help the academic professionals keep informed of the latest developments in the HCEs-related field. • We employed bibliometric analysis to examine the evolution in HCEs Research. • HCEs research is at its rapid growth stage of development. • USA and China are the most active countries in HCEs research. • The quantification of HCEs and corresponding influencing factors are the main line. • The evolution trend of HCEs should be the focus of future research. [ABSTRACT FROM AUTHOR]

China is actively promoting low-carbon city development. Understanding the perception of a low-carbon city by the entire society is vital for effective policy implementation. However, the essence of a “Low Carbon City” is not consistently understood by the society. In this article, big data mining and a bibliometric approach were adopted to establish several indicators so that scholars (based on literature) and the public (based on social network) perceptions on low carbon cities can be uncovered. The major findings are as follows: The numbers of literature and social networking posts with “low carbon” & “city” as key words have increased during the period 2010–2016 and reached a peak in 2013. The literature mainly defines low-carbon cities from a macro-economic aspect. However, the public express their concerns with respect to the quality of life or how their behaviors could be affected. Cities with high PPI (Publication Popularity Indicator) or WPI (Weibo Popularity Indicator) values are mainly clustered in the three Chinese main economic regions (Jing-Jin-Ji region, Yangtze River delta region and Pearl River delta region). Cities with high CPII (Comprehensive Popularity Intensity Indicator) values are not always clustered in the three main economic regions but are located dispersedly. This implies that cities can make great progresses in low carbon development irrespective of their economic levels and spatial locations. Three cities (Shuangyashan, Chongzuo and Guyuan) had zero PPI , WPI and CPII values, reflecting that they have not been considered for low carbon development by the scientific community or the public. It is obvious that some cities have been ignored in the context of low carbon development or they have not taken any initiatives with respect to low carbon development. The CPII used in this paper could be a useful indicator for monitoring and evaluating the perception of low carbon development at the city level. [ABSTRACT FROM AUTHOR]

To improve the efficiency of natural gas utilization and stimulate the innovation and vitality of the natural gas market, China is vigorously promoting marketization reform of the natural gas industry. A marketization index is an important tool to evaluate such reform. Using bibliometric analysis, this study establishes a marketization index of China's natural gas industry based on five factors: the relationship between the government and the market, the development of a non-state-owned economy, the degree of upstream market development, the degree of downstream market development, and the development of market intermediary organizations and the legal system. Based on the created index, this study further quantifies the current state of reform and the results show that China's natural gas industry steadily marketized between 2005 and 2018, including two rapid improvements from 2009 to 2011 and again from 2014 to 2016. Consequently, this paper offers some suggestions for market-oriented reform of China's natural gas industry, so as to promote further development of its natural gas market. This study contributes to the literature not only by establishing a new method of constructing a marketization index, but also by addressing a gap in the quantitative research on natural gas marketization, thus providing a standard reference for the future natural gas marketization reform process. [Display omitted] • A marketization index for evaluating China's natural gas industry is established. • A bibliometric method is applied to the construction of marketization index. • The index contains 5 first-level, 14 s-level and 23 third-level indicators. • Marketization level of natural gas industry has risen steadily from 2005 to 2018. [ABSTRACT FROM AUTHOR]