[Five departments: Explore and implement a management and control model for the total amount of construction land according to the planning period, and implement a comprehensive supply of existing and incremental land] On November 4, the National Development and Reform Commission, the Ministry of Industry and Information Technology, the Ministry of Natural Resources, the Ministry of Water Resources, and the State Administration of Management issued the "Action Plan for Implementing a Comprehensive Conservation Strategy." It pointed out that the level of intensive and efficient utilization should be improved. Explore and implement a management and control model for the total amount of construction land according to the planning period, and implement comprehensive land supply for both existing and incremental land. Promote mixed land development, spatial composite utilization and rational land use conversion in accordance with the law, and rationally develop underground space. Coordinate the protection and utilization of woodland and grassland, and encourage the replenishment of woodland and grassland through ecological restoration and other methods. We will develop and utilize sea area resources economically and intensively, promote the hierarchical and three-dimensional utilization of sea areas in an orderly manner, and establish an exit mechanism for inefficient sea use.