近二十年中外文草地遥感研究热点及前沿演进——基于CiteSpace的数据可视化分析

本文以Web of Science和CNKI数据库中检索到的2000—2019年有关草地遥感研究的1 388篇文献为数据源，运用CiteSpace Ⅴ软件从发文趋势、期刊、学科、国家、机构、作者、研究热点、活力等角度，定性定量地开展文献可视化分析。结果表明：草地遥感研究具有多领域、多学科交叉融合特点，中外文发文量均随年份的增加呈上升趋势，核心期刊以Remote Sensing为首；中国在该领域有较高的积极性，但影响力低于美国和德国；共有83个国家的488个科研机构就草地遥感领域的研究展开了793次合作，各机构国内合作交流较国际间频繁；核心作者间未形成稳定的作者群，且普通作者形成的合作群体内部交流合作远多于群体之间；中外文研究热点共同集中在草原生态治理和资源利用上，相比于外文，中文研究更加集中在解决当前草原生态问题；高被引文献半衰期较短（2.5~3.5年），文献老化速度较快。

Hot Topics and Frontier Evolution of Grassland Remote Sensing Research in Chinese and Foreign Languages in the Past Two Decades Visual Analysis Based on CiteSpace

1 388 research papers about grassland remote sensing studies from 2000 to 2019 were retrieved from the Web of Science (WOS) database and the China National Knowledge Infrastructure (CNKI) database. Then publication trends,journals,disciplines,countries,institutions,authors,research hotspots,vitality,etc.,were analyzed from qualitative and quantitative perspectives by using the software CiteSpace (version Ⅴ) in the form of literature visualization. The results indicated that Grassland Remote Sensing research has the characteristics of multi-field and multi-disciplinary integration. The number of published papers in both Chinese and foreign languages is increasing,and the core journals are led by Remote Sensing. China has high enthusiasm in this field,but its influence is smaller than that of the United States and Germany. A total of 488 scientific research institutions in 83 countries have carried out cooperation for 793 times in the field of grassland remote sensing research,and the domestic cooperation and exchanges among the institutions are more frequent than those among the international ones. There is no stable group of authors among core authors,and the intra-group communication and cooperation among common authors is much more than those between groups. Research hotpots in Chinese and foreign languages are focused on grassland ecological governance and resource utilization. Compared with foreign studies,Chinese studies concentrate on solving problems of current grassland ecology. The 5 references cited with the highest citation frequency have a short half-life period (2.5~3.5 years) and a faster aging rate.