GB/T 20257.3-2006
AbolishedCartographic symbols for national fundamental scale maps -- Part 3: Specifications for cartographic symbols 1:25000 1:50000 & 1:100000 topographic maps
国家基本比例尺地图图式 第3部分：1:25000 1:50000 1:100000地形图图式
Application Summary AI generated
This standard specifies the cartographic symbols, colors, and patterns to be used on 1:25,000, 1:50,000, and 1:100,000 scale topographic maps in China. It is applied by national surveying and mapping agencies, cartographers, and GIS professionals to ensure uniform representation of terrain, vegetation, water bodies, roads, and administrative boundaries across these medium-scale maps. The standard ensures consistency and legibility for military, urban planning, and environmental management applications.
Related Standards
GB/T 17159-2009
Geodetic terms
GB/T 14912-2005
Specifications for computer-aided mapping of large-scale topographic maps
GB/T 6962-2005
Aerial photographic specification for 1:500, 1:1000, 1:2000 scale topographic maps
GB/T 19710-2005
Geographic Information-Metadata
GB/T 19711-2005
Data model and data exchange format for navigable spatial database
GB/Z 33451-2016
Geographic information—Spatial sampling and statistical inference
GB/Z 34429-2017
Geographic information—Imagery and gridded data
GB/Z 40524-2021
Spatialized integration model of thematic information
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.