基于WOS引文数据库对草地碳氮库研究文献的计量分析

A Quantitative Analysis of Research Literature on Grassland Carbon and Nitrogen Pools Based on WoS Citation Database

草地是巨大的碳氮库,是陆地生态系统的重要组成部分,对保障粮食安全、生态安全具有极其重要的作用。为了解该领域研究态势,本文运用文献计量方法,基于Web of Science核心数据库中2008~2021年有关草地碳氮库的2064篇文献作为数据源,利用Vosviewer和HistCite引文分析软件对发文量、被引频次、作者、国家(地区)和机构、期刊和被引期刊、作者和被引文献、关键词进行共引分析。结果表明:1) 全球范围内草地碳氮库领域文献发表数量整体呈上升趋势。2) 中国、美国、德国等国家在草地碳氮库研究领域发文量较多,具有较大的影响力。3) 草地碳氮库研究论文主要发表在Soil Biology and Biochemistry、Plant and Soil、Geoderma、Agriculture Ecosystems and Environment及Catena等专业性较强的期刊,得到了领域内学者的认可。4) Han XG、Hobbie SE、He NP、Luo YQ等是草地碳氮库研究的主要贡献者,中国科学院、中国科学院大学、西北农林科技大学等单位在发文机构合作间的节点上发挥了重要作用,并形成草地碳氮库研究的网络核心。5) 研究热点主要集中在人类活动和气候变化对草地土壤碳氮储存、植被、微生物生物量影响等方面。研究结果较为客观地反映草地碳氮库研究领域的研究热点及其主题结构,为科研人员分析草地碳氮库研究领域及其子领域的主题结构及研究趋势提供一些思路。

Grassland is an important part of the terrestrial ecosystem, which contains huge carbon and ni-trogen storage and plays an extremely important role in ensuring food security and ecological security. In order to understand the research situation in this field better, literature metrology method was used in this study. This study is based on the data sources of 2064 literatures on grassland carbon and nitrogen pools from 2008 to 2021 in the Core database of Web of Science. We analyzed the number of publications, cited frequency, authors, countries (regions) and institutions, journals and cited journals, authors and cited literatures, and keywords co-citation through Vosviewer and HistCite citation analysis software. The results showed that: 1) The number of literatures published in grassland carbon and nitrogen pools was increasing globally. 2) China, the United States and Germany published a large number of papers on grassland carbon and nitrogen pools, which had a great influence. 3) The research papers on grassland carbon and nitrogen pools have been published in the professional journals, such as Soil Biology and Biochemistry, Plant and Soil, Geoderma, Agriculture Ecosystems and Agroecosystems Environment, Catena, and have been recognized by scholars in the field. 4) Han XG, Hobbie SE, He NP and Luo YQ were the main contributors to the grassland carbon and nitrogen pool. Chinese Academy of Sciences, University of Chinese Academy of Sciences, Northwest A&F University and other institutions played an important role in the cooperation between institutions, and formed the network core of grassland carbon and nitrogen pool. 5) The research focuses on the effects of human activities and climate change on soil carbon and nitrogen storage, vegetation and microbial biomass of grassland. Our results objectively reflect the research hotspots and theme structure of grassland carbon and nitrogen pools, and provide some ideas for researchers to analyze the theme structure and research trend of grassland carbon and nitrogen pools and its sub-areas.