摘要
新闻报导对公共政策的有效实施有重要影响.本文使用潜在狄利克雷分布(latent Dirichlet allocation,LDA)模型,对2013–2021年期间约26000篇碳市场中文新闻进行主题建模,并分析主题的时间演变与地区间的异质性.结果表明,中文报刊对碳市场的报导围绕气候变化及其对经济社会的影响、重点行业的转型发展、碳市场与绿色金融、碳市场与生态文明、以及碳市场本身的要素五个方面;在识别出的十个主题中,气候变化对农村与城市发展的影响、电动汽车行业、高耗能行业转型、碳市场与生态文明建设、碳市场对金融业务的拓展、以及碳市场本身的要素是新闻关注的重点.在时间维度上,电动汽车行业和高耗能行业转型两个主题一直受到新闻的高度关注;随着2021年中国全国碳市场启动上线交易,高耗能行业的转型成为关注最高的主题,碳市场本身的要素及其对金融业的拓展又重新受到重点关注.在空间维度上,不同区域和地区的报刊对碳市场主题的关注有明显的异质性.中文报刊一直关注重点行业低碳转型的核心议题,在公众理解碳市场政策方面发挥了良好的引导作用.碳市场主题的地区异质性反映出不同区域的政策关切,在全国碳市场建设过程中应充分考虑.
News reports have an important impact on the effective implementation of public policies.This paper uses the latent Dirichlet allocation(LDA)topic model to model the topics in about 26000 Chinese news reports on carbon market from 2013 to 2021,and analyzes the time evolution of the topics and the heterogeneity in different regions.The results show that the coverage of the carbon market by Chinese newspapers and periodicals focuses on five aspects:Climate change and its impact on the economy and society,transformation and development of key industries,carbon market and green finance,carbon market and ecological civilization,and the elements of the carbon market itself;among the 10 topics identified,the impact of climate change on rural and urban development,the electric vehicle industry,the transformation of energy-intensive industries,carbon market and ecological civilization,the expansion of carbon market to financial business,and the elements of carbon market itself are the focus of news.In terms of time dimension,the electric vehicle industry and the transformation of energy-intensive industries have been highly concerned by the news;with the launch of online trading of China’s national carbon market in 2021,the transformation of energy-intensive industries has become the highest focus,and the elements of the carbon market itself and its expansion to the financial industry have received renewed attention.In terms of spatial dimension,newspapers and periodicals in different regions have obvious heterogeneity in their attention to the identified topics.Chinese newspapers and periodicals have always paid attention to the core issues of low-carbon transformation of key industries,which have played a good guiding role in the public’s understanding of carbon markets.In developing the national carbon market,the heterogeneity in focused topics of carbon market in different regions should be fully considered.
作者
贾君君
胡虞巧
吴华清
JIA Junjun;HU Yuqiao;WU Huaqing(School of Economics,Hefei University of Technology,Hefei 230601,China;School of Economics,Shanghai University of Finance and Economics,Shanghai 200433,China)
出处
《计量经济学报》
CSSCI
CSCD
2023年第2期487-512,共26页
China Journal of Econometrics
基金
国家社会科学基金重大项目(18ZDA064)
国家自然科学基金(72001065)
中央高校基本科研业务费专项(JZ2022HGTB0259)
教育部产学合作协同育人项目(220605278010305)。
关键词
碳市场
中文新闻
LDA主题模型
时空演变
文本挖掘
carbon market
Chinese news reports
LDA topic model
spatial-temporal evolution
text mining
