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GB/T 42253-2022Code of practice for monitoring of island vegetation cover and utilization (English PDF)

海岛植被覆盖和开发利用情况监测技术规程

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 30, 2022

Implementation date

April 1, 2023

Scope

GB/T 42253-2022 is the English-translated version of 海岛植被覆盖和开发利用情况监测技术规程.

GB/T 42253-2022 is the Chinese code of practice for monitoring island vegetation cover and development by remote sensing. Clause 1 states that it stipulates the monitoring content, the technical methods and the requirements for preparing the results, and that it applies to uninhabited islands, with inhabited islands monitored by reference to it.

Its contents list runs through the monitoring content and workflow, the survey datum, remote sensing image preparation and preprocessing, the steps for extracting base-period, change and end-period information, the extraction error and the field check, then vegetation cover monitoring, development and utilisation monitoring with a cover classification system for the island and surrounding sea, and results preparation as data, tables, thematic maps and reports.

Normative annexes give a record form and a report outline. Issued on 30 December 2022, it has applied since 1 April 2023.

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Document preview — GB/T 42253-2022

National Standard of the People's Republic of China

ICS: 07.060
Classification: A 45

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

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Monitoring content and process
4.1 Monitoring content
4.2 Monitoring process
5 Surveying datum
6 Remote sensing image preparation and preprocessing
6.1 Remote sensing image preparation
6.2 Remote sensing image preprocessing
7 Information Acquisition Steps and Methods
7.1 Base period information extraction
7.2 Change Information Extraction
7.3 Final information generation
7.4 Information Extraction Error
7.5 On-site inspection
8 Island Vegetation Coverage Monitoring
8.1 Interpretation signs of island vegetation coverage
8.2 Extraction of vegetation coverage information in the base period
8.3 Information extraction of vegetation cover change
8.4 Generation of vegetation cover information at the end of the period
8.5 On-site inspection
9 Monitoring of Island Development and Utilization
9.1 Cover classification system and interpretation symbols of islands and surrounding sea areas
9.2 Extraction of base period development and utilization information
9.3 Development and utilization change information extraction
9.4 Information Generation for Final Development and Utilization
9.5 On-site inspection
10 Results preparation
10.1 Data classes
10.2 Table class
10.3 Thematic map
10.4 Report class
Appendix A (Normative) Record Form
Appendix B (Informative) Thematic Map Style
Appendix C (Informative) Thematic Map Legend Style
Appendix D (Normative) Island Remote Sensing Monitoring Report Outline
Reference

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.

1 Scope

This document stipulates the main monitoring content and monitoring technical methods of using remote sensing technology to monitor the vegetation coverage and development and utilization of islands.

The law and results preparation requirements have clarified the specific process and requirements for the monitoring work.

This document is applicable to the use of remote sensing technology to monitor the vegetation coverage and development and utilization of uninhabited islands, and to carry out related work on inhabited islands. Monitoring can be performed with reference to this regulation.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 18314 Global Positioning System (GPS) measurement specification

GB/T 23236 Digital aerial photogrammetry aerial triangulation specification

HY/T 119 Names and Codes of National Sea Islands

HY/T 250 Measurement Specifications for the Development and Utilization of Uninhabited Sea Islands

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Island

A naturally formed area of land surrounded by sea water and exposed to the water at high tide. [Source: HY/T 199-2016, 2.1]

3.2 Island area

The horizontal projected area of the island.

3.3 Areas covered by flora

3.4 Vegetation coverage

The ratio of the projected area of vegetation coverage to the island area.

4 Monitoring content and process

4.1 Monitoring content

The monitoring contents of island vegetation coverage and development and utilization are as follows.

a) Island vegetation coverage, area and vegetation coverage;

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.

Referenced standards

Normative references

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