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GB/T 42340-2023Ecosystem assessment—Methods for ecosystem pattern and quality assessment (English PDF)

生态系统评估生态系统格局与质量评价方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 17, 2023

Implementation date

July 1, 2023

Scope

GB/T 42340-2023 is the English-translated version of 生态系统评估生态系统格局与质量评价方法.

GB/T 42340-2023 describes how the pattern and the quality of terrestrial ecosystems are assessed.

It covers the content and process of the assessment, the index system, the calculation of the indices and the assessment methods, the assessment results, an informative Annex A with an ecosystem classification system and an informative Annex B with a biomass calculation method.

Clause 3 defines ecosystem, ecosystem pattern, ecosystem type and ecosystem patch, and treats fragmentation as the loss of homogeneity and continuity under natural or human disturbance.

Clause 1 states that it applies to regional assessment of ecosystem pattern and quality based on data of the spatial distribution of ecosystems. Among the standards it quotes are GB/T 25528 and the HJ 710 guidelines for biodiversity observation. Issued on 17 March 2023, it has applied since 1 July 2023.

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Document preview — GB/T 42340-2023

National Standard of the People's Republic of China

ICS: 13.020.10
Classification: Z 00

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

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Evaluation content and process
5 Evaluation Index System
6 Index Calculation and Evaluation Method
7 Evaluation Results
Appendix A (Informative) Ecosystem Classification System
Appendix B (Informative) Biomass Calculation Method
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 describes the content and process of terrestrial ecosystem pattern and quality evaluation, evaluation index system, index calculation, evaluation methods and Evaluation results.

This document is applicable to regional ecosystem pattern and quality assessment based on ecosystem spatial distribution data.

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 25528 Geographic Information Data Product Specification

HJ710.4 Technical Guidelines for Biodiversity Observation Birds

HJ710.5 Technical Guidelines for Biodiversity Observation Reptiles

HJ710.6 Technical Guidelines for Biodiversity Observation Amphibians

HJ710.7 Biodiversity Observation Technical Guidelines for Inland Water Fishes

HJ710.8 Biodiversity Observation Technical Guidelines for Freshwater Benthic Macroinvertebrates

3 Terms and Definitions

The following terms and definitions apply to this document.

3.5 Due to the interference of natural or human factors, one type of ecosystem tends to be heterogeneous and discontinuous from a homogeneous and continuous whole

3.1 Ecosystem

A functional whole formed by organisms and their environment within a certain spatial range through energy flow, material flow, and information flow.

3.2 Ecosystem pattern

The arrangement and combination of various ecosystems in space.

Note: Including the type, number, spatial distribution and configuration of ecosystems, which are the results of various ecological processes at different scales.

3.3 Ecosystem type

At a specific scale, the composition of biological communities, structure and functional processes, succession characteristics, and community appearance are consistent ecosystem units.

3.4 Ecosystem patch

Spatial entities of ecosystems that differ in quality or appearance from their surroundings, depending on the spatial scale.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

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