基于CiteSpace文献计量法的森林空间结构研究热点分析

[Objective]The forest spatial structure directly affects the forest productivity and diversity,and its adjustment and optimization is key and foundation of the precise improvement of forest quality.Over the past few decades,China has done a lot of work in the research field of forest spatial structure and published many valuable academic papers.This study attempted to intuitively and systematically explore the dynamics and trends of forest spatial structure research in China.[Method]We searched the CNKI(China National Knowledge Infrastructure)database for publications pertaining to forest spatial structure research in China from 1999 to 2022 by using bibliometric methods.We then used CiteSpace to visually analyze the authors and cooperative relations,research institutions and their partnerships,keywords,hotspots,and so on.[Result]A total of 653 research papers on forest spatial structure in China were published in CNKI database from 1999 to 2022,showing an increasing trend among different years.2013-2015 and 2019-2022 were the two critical eruption periods,and the number of published papers reached the peak in 2014(61 papers).During the initial exploration stage from 1999 to 2006,the rapid development stage from 2007 to 2014,and the steady growth stage from 2015 to 2022,Hui Gangying,Hu Yanbo,Zhao Zhonghua,Liu Wenzhen and so on,as well as Li Jiping,Zhang Huiru,Tang Mengping and so on,were close collaborators in the field of forest spatial structure,respectively.With the largest node concentric circles and the highest intermediate centrality,Professor Hui Gangying was the pioneer and core author,and the Chinese Academy of Forestry and Beijing Forestry University were the core research institutions in this field,accounting for 21.90%and 16.85%of the total published papers in CNKI,respectively.The keywords were cluster analyzed and divided into 13 groups and 2 types,focusing on the hot research areas of non-spatial structure and spatial structure,respectively.The research on forest spatial structure had the multiplicationthe characteristics,and its keywords have gradually evolved from"diameter structure"and"distribution pattern"to"competition index"and"quadrivariate distribution",etc.,while"spatial structure","uniform angle index","mingling"and"plantation"were eternal research themes and hotspots.[Conclusion]In the past 20 years,the number of papers published in the research field of forest spatial structure in China has increased rapidly,showing a diversified development trend.Hui Gangying and his affiliated Chinese Academy of Forestry were the core research force,and"spatial structure""uniform angle index""mingling"and"plantation"were the eternal themes and research hotspots,indicating that in the field of forest spatial structure the basic theories are more perfect,the technical systems were more mature,and the application and promotion were more intimately.From the perspective of collecting literatures,this study describes quantitatively,objectively and scientifically the research status and hotspots in the field of forest spatial structure in the past 20 years,which will promote the intensively study of forest spatial structure in China,and provide reference information for scholars in related fields to summarize research trends and scientific problems.