Abstract: The high-quality development of the low-altitude economy relies on the precise empowerment and technical support of surveying,mapping,and geographic information.It requires the establishment of a unified spatio-temporal digital foundation to provide core infrastructure support for low-altitude flight and management.Based on the achievements of the physicalized,three-dimensional,and realistic 3D real-scene project,this paper elaborates on the construction approach of a unified low-altitude natural resource map from multiple dimensions,including the establishment of spatial benchmarks,construction of spatial foundations,classification of low-altitude elements,organization of low-altitude elements,and development of support capabilities.Furthermore,it analyzes typical application directions based on the unified low-altitude natural resource map,such as delineating utilizable low-altitude airspace,empowering the planning of urban low-altitude air route networks,and facilitating the site selection of low-altitude takeoff and landing facilities.This study provides a reference for the efficient utilization of low-altitude natural resources and collaborative empowerment of low-altitude management.

Key words: low-altitude natural resources, One Map, low-altitude economy, digital twin