纳米颗粒与植物相互作用的研究热点和演变趋势分析——基于CiteSpace和VOSviewer的知识图谱方法
Analysis of Research Hotspots and Evolutionary Trends in Nanoparticles-plant Interactions: Based on Knowledge Mapping of CiteSpace and VOSviewer
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摘要: 纳米颗粒(nanoparticles, NPs)具有独特的表面效应、小尺寸效应、量子效应和宏观量子隧穿效应，对于促进农业科学、食品科学、纳米科技和生物医学等领域的发展具有重要意义。因此，亟待对国内外近20年来的有关NPs与植物相互作用的研究进行总结和梳理，为植物生产和纳米科技的协同发展提供理论依据。本研究以Web of Science (WOS)核心合集数据库和中国知网(CNKI)全文数据库为数据检索源，借助CiteSpace和VOSviewer文献计量工具，对2000—2022年NPs与植物相互作用领域的相关文献进行知识图谱的可视化分析。结果表明，在2000—2022年间，国内外对NPs与植物相互作用方面的研究呈J型增长，目前处于快速增长阶段，且英文文献的发文量和年增长率均显著高于中文文献(P<0.05)。国际对该领域的关注度和研究要早于国内，并且我国在NPs与植物相互作用领域的研究对全球贡献较大(排名第二)，但有影响力的研究较为缺乏，亟待进一步提高。在NPs种类上，国内外关注较多的是纳米银、纳米金、纳米氧化锌和纳米氧化铜；在植物种类上，玉米和水稻的研究较多。由国际合作关系比较可知，国内学者大部分为独立作者，合作关系较为松散。关键词提取和时空突现分析表明，未来的研究热点主要集中在以下3个方面：(1)NPs对植物的负面效应及其生态环境安全的风险评估；(2)NPs对植物的正面效应及纳米颗粒毒性的降低，使之更好地用于农业生产活动中；(3)植物介导NPs的绿色合成，从而促进纳米技术的发展。Abstract: Due to the special surface effects, small size effects, quantum effects, and macroscopic quantum tunneling effects, nanoparticles (NPs) are crucial for the advancement of agricultural research, food science, nanotechnology, biomedicine, etc. Therefore, it is necessary to compile and organize the research on the interaction between NPs and plants conducted domestically and abroad during the past 20 years, so as to offer a theoretical foundation for the cooperative development of plant production and nanotechnology. The Web of Science (WOS) core collection database and the China National Knowledge Infrastructure (CNKI) full-text database were used in this study as data retrieval sources, and the knowledge graph of the pertinent literature in the area of NPs-plant interactions from 2000 to 2022 was visualized and analyzed using the bibliometric tools of CiteSpace and VOSviewer. Results indicated that the research on the interaction of NPs and plants at home and abroad shows a J-shaped growth and is currently in a rapid growth stage. The publication volume and annual growth rate of English literature is significantly higher than those of Chinese literature (P<0.05). International interest and research in this field precede domestic research, and the research in the field of NPs-plant interaction in our country has made a significant contribution to the world (ranked second), but there is a lack of influential research, which needs to be further improved. In terms of NPs types, nano-Ag, nano-Au, nano-ZnO and nano-CuO are received the most attention both at home and abroad; in terms of plant species, maize and rice have been studied more extensively. Compared with international collaborations, most domestic scholars are independent authors and the collaborations are relatively loose and need to be further strengthened. Through the keyword extraction and spatio-temporal emergence analysis, future research hotspots are mainly focused on the following three aspects: (1) negative effects of NPs on plants and risk assessment of their ecological and environmental safety; (2) positive effects of NPs on plants and reduction of nanoparticle toxicity for better use in agricultural production activities; (3) plant-mediated green synthesis of NPs, thus promoting nanotechnology development.
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Key words:
- nanoparticles /
- plants /
- knowledge mapping /
- CiteSpace /
- VOSviewer
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