基于CiteSpace的农田安全利用研究态势分析

Situation analysis of farmland safe utilization based on CiteSpace

【目的】开展基于CiteSpace的农田安全利用研究态势分析,为我国耕地资源的可持续利用提供参考依据。【方法】利用CiteSpace VI对2000—2022年来源于中国知网(CNKI)中农田安全利用研究领域的1419篇文献信息进行科学计量可视化分析,采用普赖斯理论计算核心作者群体,评估我国耕地资源的保护利用态势。【结果】2000—2022年我国农田受重金属污染问题愈发严重,安全利用研究领域的年发文量总体上呈波浪式快速上升,自2003年以后广大专家学者对该研究领域愈发重视。对主要研究力量的分析结果表明,中国科学院大学、中国科学院南京土壤研究所、农业农村部环境保护科研监测所、中国科学院地理科学与资源研究所和云南农业大学资源与环境学院是发文量排名前5位的研究机构,分别发表70、63、36、35和19篇文献,而其他研究机构之间连线密度较低,合作基础薄弱;陈同斌、宋波、骆永明、湛方栋和吴龙华是发文量排名前5位的高产作者,分别发表24、20、17、15和15篇文献,但发文量排名前10位作者的中心性较低,为0~0.06。关键词共现与聚类分析结果表明,源解析、钝化修复、钝化剂、生物炭、镉污染、小麦和健康风险是近几年的突现关键词,突现强度分别为5.30、5.19、4.57、4.75、4.64、3.34和3.81,与上述关键词相关的主题是我国农田安全利用研究领域当前及未来一段时间的主要研究方向;植物修复、农作物安全生产及农田土壤重金属污染与风险评价是广大专家学者研究的热点。【结论】2000—2022年我国农田受重金属污染问题愈发严重,农田安全利用研究领域的年发文量总体上呈波浪式快速上升,但发文量排名前10位作者的中心性均较低,大部分研究机构间的连线密度较低,合作基础薄弱。因此,建议进一步加强核心作者间的协同创新研究,持续推动研究机构间的合作交流,以促进我国耕地资源的保护和利用。

【Objective】The study aimed to analyze the situation of safe utilization of farmland based on CiteSpace, so as to provide reference basis for sustainable use of cultivated land resource in China.【Method】CiteSpace VI was used to analyze the information of 1419 literatures in the field of farmland safe utilization from 2000 to 2022 from China National Knowledge Infrastructure(CNKI). Price theory was used to calculate the core author group, and the conservation and utilization situation of cultivated land resources in China was evaluated.【Result】From 2000 to 2022, the problem of heavy metal pollution in farmland in China had become more and more serious. The number of annual publications in the field of safe utilization research had been rising rapidly in a wavy fashion. Since 2003, experts and scholars had paid more and more attention to this research field. Analysis of the main research strength results showed that the University of Chinese Academy of Sciences, Institute of Soil Sciences of Chinese Academy of Sciences, Agro-environmental Protection Institute of Ministry of Agriculture and Social Affairs, Institute of Geographic Sciences and Natural Resources Research of Chinese Academy of Sciences and College of Resources and Environment of Yunnan Agricultural University were the top 5 institutions of publishing articles, with 70, 63, 36, 35 and 19 articles published respectively. However, other research institutions had low connectivity density and weak cooperation basis. Chen Tongbin, Song Bo, Luo Yongming, Zhan Fangdong and Wu Longhua were the top 5 authors with 24, 20, 17, 15 and 15 articles published respectively, but the centrality of the top 10 authors was low, ranging from 0 to 0.06. Results of keyword co-occurrence and cluster analysis showed that source resolution, passivation remediation, passivation agent, biochar, cadmium pollution, wheat and health risk emerged keywords in recent years, and the intensity of the emergence was 5.30, 5.19, 4.57, 4.75, 4.64, 3.34 and 3.81, respectively. The above keywords related topics were the main research directions of current and future research fields of farmland safety use;Phytoremediation, safe production of crop and heavy metal pollution and risk assessment of farmland soil were the trending research point of many experts and scholars.【Conclusion】From 2000 to 2022, the problem of heavy metal pollution in farmland in China has become increasingly serious. The number of annual articles published in the field of farmland safety utilization has risen rapidly in a wavy way on the whole. However, the centrality of the top 10 authors in the number of articles published is low, and the connection density between most research institutions is low, and the basis for cooperation is weak. Therefore, it is suggested to further strengthen the collaborative innovation research among core authors and promote the cooperation and exchange between research institutions, so as to promote the rapid development of farmland safe use research, promoting the protection and utilization of cultivated land resources in China.