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GB/T 45792-2025Thematic map — Compilation specification for geographic base map (English PDF)

专题地图地理底图编制规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 30, 2025

Implementation date

September 1, 2025

Scope

GB/T 45792-2025 is the English-translated version of 专题地图地理底图编制规范.

GB/T 45792-2025 is the Chinese national standard covering the background a thematic map is drawn on — the base map types from the comprehensive to the administrative, the projection and scale, the data sources, the order in which water, settlements, transport and boundaries are selected and how much load the base map can carry before it competes with the theme, the symbol sizes and colours, the placement of place name annotation, and the map review before publication. At 29,000 words, most of it the normative symbol and annotation appendices. First edition, under the Ministry of Natural Resources. In force from 1 September 2025. Issued on 30 May 2025, it has been in force since 1 September 2025.

Document preview — GB/T 45792-2025

National Standard of the People's Republic of China

ICS: 07.040
Classification: A 75

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Basic Provisions1
4.1 Geographic basemap type1
4.2 Mathematical foundations2
4.3 Mapping units and tiles2
4.4 Current situation2
4.5 Geographic basemaps for publicly published thematic maps2
4.6 Quality Inspection2
5 Data Source2
5.1 Main data sources2
5.2 Other data sources5
6 Element Selection5
6.1 Selection order5
6.2 Geographic base map load5
6.3 Select content5
6.4 Selecting indicators7
7 Element Representation8
7.1 Schema8
7.2 Neighborhood element processing9
7.3 Element Relationship Processing9
8 Verification Method10
8.1 Technical Design Review10
8.2 Quality Inspection10
8.3 Map Review10
Appendix A (Informative) Geographic Base Map Projection and Scale11
A.1 Geographic basemap projection11
A.2 Scale11
Appendix B (Normative) Geographical base map diagram symbols12
B.1 Symbol size12
B.2 Symbol Color12
B.3 Symbol Configuration13
B.4 Schematic symbols14
Appendix C (Normative) Geographical Base Map Name Notes40
C.1 Annotation40
C.2 Annotation font and size41
C.3 Annotation Color41
C.4 Annotation Configuration42
C.5 Name Notation42
References50

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed by the Ministry of Natural Resources of the People's Republic of China.

This document is under the jurisdiction of the National Technical Committee for Geographic Information Standardization (SAC/TC230).

The drafting units of this document. Chinese Academy of Surveying and Mapping, China Cartographic Publishing House Co., Ltd., and the Institute of Surveying and Mapping Standardization of the Ministry of Natural Resources.

The main drafters of this document are: Yin Hongmei, Huang Jie, Liu Jiping, Lu Zhongjin, Gao Wujun, Mao Xi, Yan Jingxin, Geng Xiaonan, An Zhenzhen, Liu Dongqin, Gong Jinping, Liu Xiangyi, and Wang Huanping.

Specifications for the compilation of thematic maps and geographic base maps

1 Scope

This document specifies the basic rules, data sources, feature selection, feature representation, verification methods, etc. for the compilation of thematic geographic base maps.

This document is applicable to the design and compilation of thematic map geographic base maps.

2 Normative references

GB/T 16820-2009

GB/T 19996

GB/T 24356

GB/T 35633

GB/T 35764

3 Terms and definitions

The terms and definitions defined in GB/T 16820-2009 and the following apply to this document.

3.1 seriesthematicmaps

A set of maps with a unified design and compilation that focuses on representing a certain theme in natural or social phenomena.

3.2

A set of geographic basemaps used for the compilation of a series of thematic maps.

4 Basic Provisions

4.1 Geographic basemap types

Based on the differences in the content and expression requirements of various thematic maps, geographic base maps are classified. Commonly used geographic base map types are shown in Table 1.

Table 1 Commonly used geographic basemap types Basemap types indicate the main purpose of the content Comprehensive geographic basemap Relatively balanced representation of regional water systems, settlements, and transportation Elements such as access, boundaries, and terrain Used to compile data based on regional natural geographical environment and human geography Other related thematic maps The administrative geographic base map focuses on showing elements such as boundaries, administrative regions, and settlements.

Used to compile population, economic and social development data closely related to political regions Related thematic maps

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 48 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 45792

Edition	Title	Revision	Status
GB/T 45792-2025	Thematic map - Compilation specification for geographic base map	current edition	Current

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