Visualization Analysis of the Hot Topics and Frontier on International Sustainable Livelihoods Research Hotspots and knowledge base of sustainability science research: based on data of sustainability science Progress and implications in tourism and livelihood Research Hotspots and status of macroecology research Visualization analysis on research hotspots in interdisciplinary field of Chinese medicine Development of Research on Photoautotrophic Micropropagation Development of Research on Photoautotrophic Micropropagation