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GB/T 43956-2024: Specification for the mesoscale data product of global land cover mapping
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GB/T 43956-2024: Specification for the mesoscale data product of global land cover mapping

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ICS 07:040 CCSA75 National Standards of People's Republic of China Mesoscale Global Land Cover Mapping Data Product Specification Released on 2024-04-25 2024-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Basic Requirements 2 4:1 Data Source 2 4:2 Classification system 2 4:3 Mathematical foundations 2 4:4 Land Class Extraction 2 4:5 Overall Classification Accuracy 2 4:6 Data Edge 3 4:7 Product organization and naming 3 5 Data product content 3 5:1 Land cover classification data 3 5:1:1 Overview 3 5:1:2 Raster Classification Data 3 5:1:3 Vector Classification Data 3 5:2 Metadata 3 6 Data product production 3 6:1 Process Flow 3 6:2 Image Data Preprocessing 4 6:3 Feature type extraction update 4 6:4 Data Verification and Editing 4 6:5 Data Quality Check 4 6:6 Product Accuracy Evaluation 5 6:6:1 Sampling 5 6:6:2 Verification 5 6:7 Data collation and submission 5 7 Quality Requirements 5 7:1 Quality Inspection Measures 5 7:2 Quality element content 5 8 Product Releases and Services 5 8:1 Packaging 5 8:2 Services 5 Appendix A (informative) Classification system examples 6 Appendix B (Informative) Example of land cover type extraction index requirements 7 Appendix C (Informative) Global Land Cover Mapping Data Product Organization and Naming Examples 9 C:1 Data storage unit 9 C:2 Data naming and organization 9 C:2:1 Product data naming 9 C:2:2 Product data organization 10 Appendix D (Informative) Global Land Cover Mapping Data Example 11 D:1 2020 version of global land cover mapping data GlobeLand30 11 D:2 Land cover classification data structure 11 D:2:1 Grid-type land cover classification data structure 11 D:2:2 Vector land cover classification data structure 12 Appendix E (Informative) Metadata Examples for Global Land Cover Mapping Data Products13 E:1 Classification data source information data structure example 13 E:2 Metadata data structure 14 Reference 18

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): This document was drafted by: National Basic Geographic Information Center, Sanya Surveying and Mapping Technology Development Service Training Center of the Ministry of Natural Resources, Shaanxi Surveying and Mapping Geographic Information Bureau, the First Aerial Survey and Remote Sensing Institute of the Ministry of Natural Resources, Heilongjiang Surveying and Mapping Geographic Information Bureau, Heilongjiang Geographic Information Engineering Institute, Sichuan Surveying and Mapping Bureau Bureau of Natural Resources and Information Technology, the Third Institute of Aerial Surveying and Remote Sensing of the Ministry of Natural Resources, Chinese Academy of Surveying and Mapping, and Beijing University of Civil Engineering: The main drafters of this document are: Chen Jun, Peng Shu, Chen Jiage, Tian Haibo, Liao Anping, Chen Lijun, Zhang Hongwei, Zhu Ling, He Chaoying, Zhang Xueping, Qu Ying, Qu Ping, Yuan Rujin, Shi Jiangnan, Li Xueju, and Zhai Liang: Mesoscale Global Land Cover Mapping Data Product Specification

1 Scope

This document specifies the basic requirements, content, production, quality requirements, product release and Serve: This document applies to the production, maintenance and updating of mesoscale global or regional land cover mapping data products using remote sensing images:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document: For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document: GB/T 18316-2008 Quality inspection and acceptance of digital surveying and mapping results GB/T 21336:1-2023 Geographic Information Data Quality Part 1: General Requirements GB/T 30170 Geographic information - spatial reference based on coordinates CH/T 1027-2012 Technical specification for quality inspection of digital orthophotos

3 Terms and definitions

The following terms and definitions apply to this document: 3:1 land cover The land surface covers such as natural and artificial vegetation and buildings that can be observed directly or through remote sensing: 3:2 mesoscale Characterization of land cover types on remote sensing images with a spatial resolution of 10m~30m: 3:3 Classification system A system for dividing objects into classes: [Source: GB/T 30322:1-2013:4:1:5] 3:4 For each random sample, the probability that the classified result is consistent with the actual type corresponding to the ground: 3:5 Commission error For a certain land cover type, the probability of taking any sample and finding that it is different from the actual ground observation type is: 3:6 Omission error For a certain surface cover type observed on the ground, the probability of a sample being misclassified as another different type is determined by taking any sample from the classification results: ...