基于文献计量学的中国湿地碳循环研究进展

为探明中国湿地碳循环的研究现状及发展趋势，基于Web of Science（WoS）和CNKI数据库中2000—2020年发表的中国湿地碳循环研究的相关文献信息，运用文献计量学方法对年度发文量、引用频次、作者、国家、机构、期刊、关键词等进行分析，解析了国内外该领域的研究进展并对未来发展提出了建议。结果表明：2000—2020年共发表有关中国湿地碳循环领域文献2 998篇，WoS和CNKI数据库分别为1 120和1 878篇，年发文量呈现波动上升的趋势；WoS数据库中的文献涉及全球51个国家，其中中国发文量为1 075篇，占总发文量的95.98%；“湿地”“土壤有机碳”“甲烷释放”是中介中心性较高的关键词，是湿地碳循环研究的核心内容；Ecological Engineering和《生态学报》分别是该领域外文和中文文献的主要期刊载体；温室气体交换机制和通量、微生物对碳循环的影响、湿地土壤的碳生态化学计量特征、湿地碳循环与全球变化等是近5年来中国湿地碳循环研究的热点问题。计量分析结果有助于全面了解中国湿地碳循环研究现状及进展，为国内外的湿地碳研究提供参考。

Research progress of wetland carbon cycle in China based on bibliometrics

In order to explore the research status and development trend of the carbon cycle of wetlands in China, based on the relevant published literature in Web of Science (WoS) and CNKI databases from 2000 to 2020, the annual number of publications, citation frequency, authors, countries, institutions, journals, and keywords, etc. were analyzed in the past 20 years at home and abroad, using the bibliometrics method. Some suggestions for the future development were also put forward. The results showed that a total of 2 998 pieces of literature related to the carbon cycle of wetlands in China were published from 2000 to 2020, with the number of literature published in WoS and CNKI databases being 1 120 and 1 878, respectively. The annual number of literature published showed a trend of fluctuation and increase. The literature in WoS database covered 51 countries around the world, of which 1 075 were published in China, accounting for 95.98% of the total. Wetland, soil organic carbon and methane release were the key words with high mediating centrality, which were the core content of wetland carbon cycle research. Ecological Engineering and Acta Ecologica Sinica were the main journal carriers of foreign and Chinese literature in this field, respectively. The mechanism and flux of greenhouse gas exchange, the effect of microorganisms on carbon cycle, the ecological stoichiometry of carbon in wetland soil, and the carbon cycle and global change of wetland carbon cycle had been the hot topics in wetland carbon cycle research in China in the recent five years. The results of econometric analysis were helpful in comprehensively understanding the research status and development progress of wetland carbon cycle research in China, and providing references for wetland carbon research at home and abroad.