稀土元素示踪法探究坡面侵蚀进展与热点——基于CiteSpace计量分析

稀土元素示踪法从上世纪90年代开始逐渐被相关学者重视,并在坡面土壤侵蚀的研究中得到越来越广泛的应用。笔者采用CiteSpace软件和文献计量学方法,以Web of Science数据库核心合集和中国知网(CNKI)数据库核心期刊为数据源,分析了近30年国内外稀土元素示踪法在坡面侵蚀研究的发展历程。研究发现:①总体而言,国内稀土元素示踪法在坡面侵蚀中的应用在理论和实践层面已经从初步探索走向了成熟;②随着研究的深入,稀土元素示踪法的研究与相关学科交叉更加密切,并在微观探索和宏观调控方面取得一定进展;③未来发展趋势来看,宏观方面趋向和生态系统、气候变化等互相作用机理的研究,微观方向趋向对团聚体等微观颗粒的迁移研究;④在国际相关研究方面,对于稀土元素示踪法在坡面侵蚀的应用从多个方面和角度做了大量的研究,我国的相关研究相较于国外顶尖水平的研究仍存在一定差距。

Study Progress and Hotspots of Slope Soil Erosion by Rare Earth Element Tracing Method-Quantitative Analysis Based on CiteSpace

More attention has been paid on the rare earth element(REE)tracing method by scholars since 1990s,such method has been widely applied in the study of slope soil erosion.By using the core collection of Web of Science and CNKI database as data sources,it was analyzed the development of soil REE tracing method in the study of slope soil erosion in recent 30 years with the application of CiteSpace software and bibliometric method.The study show that,①in general,the application of REE tracing method in soil erosion in China has been developed from preliminary exploration to matured systematic research;②along with the deepening of the study,overlapping between the research of REE tracing method and the related disciplines is closer,and it was made some progress on the aspects of micro-exploration and macro-control;③looking from the future development trend,the research will be focus on the interaction mechanism between ecosystem and climate change from the macroscopic aspect;while the research will be focus on the migration of micro particles such as aggregates from the microscopic aspect;and④in terms of international research,a lot of research has been done on the application of REE tracing method in slope erosion from various aspects and angles.There is still a certain gap between China's related research and top level research abroad.