Abstract：[Background]Benggang is an erosion gully, which widely distributes in the tropical and subtropical granite-covered areas of southern China, generally composed of hillslope, headwall, colluvium, gully, and alluvial fan affecting by water and gravity. It has a serious threat on the local security of ecology, food, flood control and living security. [Methods] In order to review the development process of benggang research in China in the past half century, this paper used the CNKI (China National Knowledge Infrastructure) database as the data source to statistically analyze the number, annual growth rate and published journals of benggang research papers in 1966-2016. Based on CiteSpace, the knowledge maps of benggang research were excavated and analyzed visually, and the core author group, main research institutions and high frequency keywords were identified. [Results] 1) The number of papers about benggang research published in China between 1966 and 2016 showed a fluctuating trend. 2) The published journals of benggang research were mainly related to the disciplines of soil and water conservation, reflecting the interdisciplinary research need to be strengthened. The overall impact factors of these published journals were relatively low, reflecting that the level of benggang research needs to be improved. 3) There were few academic exchanges among research institutions, and their scientific research strength differed significantly. Therefore, the exchanges and cooperation between the research teams need to be enhanced to achieve common development. 4) "Benggang", "benggang erosion", "soil erosion", " water and soil loss", "hillslope", "weathered crust" and so on were the main keywords of benggang research in China. "Colluvium" and "shear strength" were the hot spots of benggang research in recent years. The most published papers of benggang research were related to the prevention and control measures, while quantitative researches were scarce. [Conclusions] Through the visual excavation and analysis of knowledge maps of benggang research, it is conducive to scientific researchers to have a more comprehensive, objective and accurate understanding on the history and current situation of benggang research in China, so as to better refine the research direction, and provide more in-depth specific guidance.
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QIU Jin'an, LIU Xilin. Status and comprehensive analysis of benggang research in China based on knowledge maps. SSWC, 2017, 15(3): 139-148.
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2017, Vol. 15 
