基于知识图谱的中国崩岗研究现状及综合分析

崩岗是一种发育在中国南方低山丘陵地区的水土流失地貌类型,侵蚀量巨大,危害严重.为回顾半个世纪以来中国崩岗研究的发展历程,以中国知网(CNKI)数据库为数据源,统计分析1966-2016年间以“崩岗”为主题的文献数量、时间分布及载文期刊情况,基于CiteSpace对崩岗研究知识图谱进行可视化挖掘与分析,识别出核心作者群、主要研究机构及高频关键词.研究结果表明:1)半个世纪以来中国崩岗研究的论文数量整体呈现区间波动增长的态势.2)载文期刊以水土保持学科为主,学科交叉研究有待加强;期刊影响因子总体偏低,反映崩岗研究水平有待提高.3)研究机构之间学术交流较少,科研实力差异显著,有待加强交流合作,实现共同发展.4)中国崩岗研究主要围绕“崩岗”“崩岗侵蚀”“土壤侵蚀”“水土流失”“坡面”“风化壳”等展开,“崩积体”和土体“抗剪强度”是近年来崩岗研究的热点.崩岗研究产出论文大部分与防控治理措施有关,定量研究较少.研究结果有助于科研工作者对中国崩岗研究历史与现状有较全面、客观、准确的认识,从而更好地精炼研究方向,为崩岗的后续研究提供更深入具体的指导.

Status and comprehensive analysis of benggang research in China based on knowledge maps

Background]Benggang is an erosion gully,which widely distributes in the tropical and subtropical granite-covered areas of southern China,generally composed of hillslope,headwall,colluvium,gully,and alluvial fan affecting by water and gravity.It has a serious threat on the local security of ecology,food,flood control and living security.Methods] In order to review the development process of benggang research in China in the past half century,this paper used the CNKI (China National Knowledge Infrastructure) database as the data source to statistically analyze the number,annual growth rate and published journals of benggang research papers in 1966-2016.Based on CiteSpace,the knowledge maps of benggang research were excavated and analyzed visually,and the core author group,main research institutions and high frequency keywords were identified.Results] 1) The number of papers about benggang research published in China between 1966 and 2016 showed a fluctuating trend.2) The published journals of benggang research were mainly related to the disciplines of soil and water conservation,reflecting the interdisciplinary research need to be strengthened.The overall impact factors of these published journals were relatively low,reflecting that the level of benggang research needs to be improved.3) There were few academic exchanges among research institutions,and their scientific research strength differed significantly.Therefore,the exchanges and cooperation between the research teams need to be enhanced to achieve common development.4) "Benggang","benggang erosion","soil erosion"," water and soil loss","hillslope","weathered crust" and so on were the main keywords of benggang research in China."Colluvium" and "shear strength" were the hot spots of benggang research in recent years.The most published papers of benggang research were related to the prevention and control measures,while quantitative researches were scarce.Conclusions] Through the visual excavation and analysis of knowledge maps of benggang research,it is conducive to scientific researchers to have a more comprehensive,objective and accurate understanding on the history and current situation of benggang research in China,so as to better refine the research direction,and provide more in-depth specific guidance.