Core Points - The Guangzhou Municipal Development and Reform Commission has approved a project proposal for the construction of a digital three-dimensional foundation and innovative applications in the city [1][4] - The project is divided into two main parts: the urban three-dimensional foundation and innovative applications, which will support the intelligent management of urban space and accelerate the development of a smart city in Guangzhou [1] Infrastructure Layer - The infrastructure layer includes the establishment of a comprehensive geological disaster monitoring network, a unified vertical benchmark for land and sea, and supporting infrastructure for environmental and resource management, enhancing real-time monitoring capabilities for urban safety risks [1] Data Resource Layer - The data resource layer involves the production and integration of three-dimensional data repositories for both above and below ground, as well as specialized databases for flood monitoring, vertical and multi-source satellite remote sensing, land investment, heritage protection, and low-altitude economy, creating a unified spatial and temporal data resource pool [1] Temporal and Spatial Framework Layer - The temporal and spatial framework layer consists of a national land spatial basic information platform, a management system for Guangzhou's spatial data, a model for planning and controlling rain and flood blue-green spaces, and a model for managing low-altitude infrastructure, forming a support platform for spatial intelligence [1] Business Application Layer - The business application layer will develop a series of innovative applications, including management of urban underground space information, planning and control of urban rain and flood spaces, geological safety management, implementation supervision of land spatial planning, smart city initiatives, statistical analysis of natural resources, upgrades to the Tianmap·Guangzhou system, unification of real estate registration platforms, optimization of approval systems for a better business environment, a three-dimensional foundation for low-altitude economy, smart land investment, and an integrated geographic space system for key project construction [2] Investment and Implementation - The total estimated investment for the project exceeds 400 million yuan, with the Municipal Planning and Natural Resources Bureau responsible for its organization and implementation, and the construction period is set for three years [3]