我国土壤盐碱化问题研究脉络和热点分析

为全面了解我国盐碱地研究的演化脉络、现状及前沿热点，以中国知网为数据源，借助可视化软件CiteSpce，运用文献计量学方法对1992—2021年国内发表的22 606篇论文，从发文量和关键词等方面进行分析。结果表明:1)1992—2021年盐碱地研究经历了稳定发展、快速增长和相对饱和3个时期，发文数量总体呈上升趋势；2)研究主题围绕盐胁迫对植物生理生态特征的影响、盐碱地基础理论研究以及改良修复措施、土壤水盐运移机理和水资源高效利用、土壤盐碱化监测管理和盐生植物开发利用等5个主题展开；3)演化脉络历经盐碱地基础研究、盐碱化动态监测和盐碱地生态修复这3个阶段。综上，当前我国土壤盐碱化问题研究热点主要集中在基于生态修复对新方法、新材料和新技术的探索与利用方面，未来盐碱地应加强基因技术、植物根际促生菌以及机器学习算法等前沿热点在盐碱地治理中的研究和应用。

Research lineage and hot spot analysis of soil salinization in China

In order to comprehensively understand the evolutionary lineage, current situation and frontier hotspots of saline land research in China, this study analyzes 22 606 papers published in China in the past 30 years in terms of the number of publications and keywords by using China Knowledge Network as the data source and the visualization software CiteSpce with the bibliometric method. The results showed that: 1)Soil saline research has experienced three periods, which are stable development, rapid growth, and relative saturation, in the past 30 years with an overall upward trend. 2)The research themes revolve around five topics as follows: The effects of salt stress on plant physiological and ecological characteristics, basic theoretical research on saline lands and improvement and restoration measures, soil water and salt transport mechanism and efficient utilization of water resources, monitoring and management of soil salinization, and development and utilization of saline plants. 3)The evolutionary lineage has gone through three stages including improvement and management of saline lands and the impact of salt stress on the physiological and ecological characteristics of plants, the impact on ecological environment and monitoring of salinization, and ecological restoration. To sum up, the research hotspots are currently focused on the exploration and utilization of new methods, materials and technologies based on the premise of ecological restoration. Future research on salinity should strengthen cooperation among institutions and personnel, and enhance research on the application of emerging research hotspots such as gene technology, plant inter-root promoting bacteria, and machine learning algorithms in salinity.