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This book systematically studies the relationship between man and land and the evolution of the ecological environment in the Dianchi Lake Basin in the historical period. It focuses on the relationship between the Dianchi River and the changes in the Dianchi Lake, the relationship between the decline of the Dianchi Lake water level and the retreat of the water area and the formation of the lake basin plain on the north and east banks of the Dianchi Lake, the relationship between the population source of the Dianchi Lake area and the development of the Dianchi Lake, and the relationship between the Dianchi Lake area and the development of the Dianchi Lake. Issues such as the rivers flowing into the lake from Dianchi Lake for irrigation, the landforming characteristics of the lakeside of Dianchi Lake, and farmland development have important academic value and practical significance. They can promote and enrich research on the development history of the Dianchi Lake Basin, local history of southwest China, economic history, environmental history and other related fields, and promote the sustainable development of the Dianchi Lake Basin and the construction of ecological civilization.