Research Hotspots and Trends of Black Soil Protection and Utilization in China Based on the CiteSpace Analysis
At present,the black soil protection and utilization have become an important scientific issue con-cerning the national food security.This study systematically sorted out the research hotspots and development trends in the field of black soil protection and utilization in China.This study visually combed the relevant research on the protection and utilization of black soil in China,focused on the research theme,hotspots and frontiers to carry out the map analysis,and systematically summarized and extracted the evolution vein,research focus and development trends of relevant research based on the CiteSpace software.After 2015,the number of published papers in this field increased rapidly.However,the close cooperation among scholars was not high,the cross-unit and interdisci-plinary cooperation was insufficient,and the proportion of research institutes supported by fundings was less than 25%.From the perspective of changes in the research hotspots,the research in the field of black soil protection and utilization experienced the whole development process from concentrating on the land degradation and soil erosion to focusing on the exploration,integration,promotion and application of key technologies for the black soil protection and utilization,and then to taking the black land protection and utilization as an important starting point to ensure the national food security at the present stage.
black soil protection and utilizationCitsSpaceliterature metrologyresearch hotpotsvisual analysis
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