利用CiteSpace可视化分析中国黑色页岩研究现状

Using CiteSpace to Visualize Black Shale Research of China

黑色页岩是地球深部及地表多圈层联动条件下生命过程和非生命过程共同作用的产物,含有丰富的社会发展不可或缺的能源资源,是坚持“四个面向”、开展学科交叉基础前沿研究、服务国家高质量发展的广阔研究领域。为全面了解中国黑色页岩研究现状,厘清热点研究课题,深入挖掘研究前沿与热点并掌握其发展动向,使用CiteSpace可视化软件对收录在中国知网(1466篇)和Web of Science(1069篇)数据库中有关中国黑色页岩的文献进行了知识图谱分析。结果显示:相关论文发表量自21世纪以来逐年上升,机构间合作研究网络逐渐增强,研究走向国际化,学术影响力显著提升;核心研究主题包括页岩气、龙马溪组和四川盆地等关键词;研究前沿聚类涵盖“南华北盆地”(Southern North China Basin)“五峰—龙马溪组”“奥陶系—志留系过渡时期”“早寒武世”“镍钼多金属硫化物层”“埃迪卡拉纪放射性成因Sr同位素偏移”“奥陶系—志留系五峰—龙马溪页岩“”鄂尔多斯“”华南“”页岩气潜力“”寒武纪沉积相“”早寒武世黑色页岩”等12个子域。总结得出,中国黑色页岩研究正处于快速发展阶段,热点研究学科为石油与天然气地质学,热点研究区域为四川盆地,热点关注地层有五峰组—龙马溪组和牛蹄塘组等。前沿研究主题由早期的矿床学和沉积学研究等向现在的石油与天然气地质学研究转移。整体上看,中国黑色页岩研究在“学科”“区域”以及“地层”方面关注力度不均衡,尤其学科间分割现象较明显,合作不紧密,多学科协同研究没有体现;对黑色页岩本身的研究重点关注沉积环境和氧化还原条件,沉积过程和机理研究不够显著。建议加强学科节交叉和融合,从面向科学前沿和服务国家需求两方面开展黑色页岩综合研究。

Black shale is the product of the joint action of life and non-life processes under the condition of multi-circle linkage in the deep inside and on the surface of the Earth and contains abundant energy resources indispensable for social development.To comprehensively understand the research status of black shale in China,clarify the notable research topics,deeply assess the research frontiers and hot spots,and grasp their development trends;a knowledge graph analysis of the literature on black shale in China included in the CNKI(1466 articles)and Web of Science(1069 articles)databases was performed using CiteSpace visualization software.The results showed that the number of published papers has increased annually since the beginning of this century,inter-institutional and international cooperation has gradually strengthened,and academic influence has notably expanded.The core research topics included shale gas,Longmaxi Formation,the Sichuan Basin,and other keywords.The research frontier clusters cover 12 subdomains,including“Southern North China Basin”,“Wufeng-Longmaxi Formation”,“Ordovician-Silurian Transition”,“Early Cambrian”,“Ni-Mo Polymetallic Sulfide Bed”,“Ediacaran Radiogenic Sr Isotope Excursion”,“Ordovician-Silurian Wufeng-Longmaxi Shale”,“Ordos”,“South China”,“Shale Gas Potential”,“Cambrian Facies”,and“Early Cambrian Black Shale”.The research on black shale in China is concluded to be in a stage of rapid development,with the most notable research discipline being petroleum geology.The hottest research area is the Sichuan Basin,and the hottest strata include the Wufeng-Longmaxi and Niutitang formations.Frontier research topics have shifted from mineral deposits and sedimentology to petroleum geology.Overall,biased attention has been given to black shale research in China in terms of the discipline,targeted regions,and strata.Multidisciplinary collaborative research remains rare,and its scientific strengths require to be adequately explored.In addition,the study of black shale has been mainly limited to sedimentary environments and redox conditions,whereas the sedimentary processes and mechanisms have not been adequately studied.Currently,an urgent requirement prevailsto strengthen interdisciplinary cooperation and integration and perform major comprehensive research projects on black shale to lead scientific research frontiers and serve the developmental needs of our country.