Research Development of Food Plant Ethnobotany—Bibliometric and Mapping Knowledge Domains Analysis Based on Web of Science Research Development of Food Plant Ethnobotany—Bibliometric and Mapping Knowledge Domains Analysis Based on Web of Science Progress and implications in tourism and climate change research Alfalfa science research by Chinese scholars since 1950: history and main topics The knowledge mapping of domestic ecological security research:bibliometric analysis based on citespace An analysis of the evolution of topics and future trends in ecological security research