国际土壤酸化研究知识图谱分析

Knowledge Map of International Research on Soil Acidification

【目的】全面直观了解近年来全球土壤酸化研究趋势与前沿热点。【方法】以Web of Science数据库为基础,借助VOSviewer和CiteSpace等可视化分析软件,对1991~2020年发表的土壤酸化文献共7049篇,从发文量、国家、研究机构、作者、高被引论文、期刊和关键词等多个角度进行可视化计量分析。【结果】近30年来国际土壤酸化领域年度发文量呈逐渐上升趋势;中国和美国的发文量远超其他国家,但中国中心性较低;中国科学院发文量和中心度最高,中国科学院大学、瑞典农业大学和中国农业大学等机构也具有较强的科研水平和国际影响力;研究人员独立性较强,核心研究群体之间合作较少;共被引期刊主要有WATER AIR SOIL POLL、 PLANT SOIL、 SOIL SCI SOC AM J、NATURE和SCIENCE等;热点研究包括氮、铝、沉降、施肥、重金属、森林土壤、气候变化、有机质、植物生长、酸化影响和治理等方面,并呈阶段特征。【结论】研究有利于全面了解近年来国际土壤酸化研究发展历程,为国内酸化研究及应用提供参考。

[Objective] The research trend and frontier hot spots of international soil acidification research in recent years is reviewed. [Method] The publications based on Web of Science(WoS) database from 1991-2020 were analyzed by visual analysis software like CiteSpace and VOSviewer. Visual econometric analysis was conducted from number of publications, countries, institutions, authors, highly cited papers, journals and keywords. [Result] The results showed that the annual amount of soil acidification published in the world was gradually increasing in the past30 years. China led in the number of publications along with the United States, but its centrality was low. Chinese Academy of Sciences has the most publications and the highest degree of centrality. University of Chinese Academy of Sciences, Swedish Agricultural University and China Agricultural University also have strong scientific research level and international influence. Most researchers were independent, and core groups seldom collaborated with each other. The main co-citation journals included WATER AIR SOIL POLL, PLANT SOIL, SOIL SCI SOC AM J,NATURE and SCIENCE, etc. The hotspots included nitrogen, aluminum, sedimentation, fertilization, heavy metals,forest soil, climate change, organic matter, plant growth, acidification effect and management, and they presented stage characteristics. [Conclusion] This study is conducive to a comprehensive understanding of international soil acidification research in recent years, and provides reference for domestic acidification research and application.