LY/T 3330-2022Technical regulations for forest soil carbon stock survey (English PDF)

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 contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:

This document was proposed by the Chinese Academy of Forestry Sciences:

This document is under the jurisdiction of the State Forestry and Grassland Administration:

1 Scope

This document stipulates the preliminary preparation, sample point layout, sample collection, laboratory analysis and soil carbon storage measurement of forest soil carbon storage:

calculation method:

This document is applicable to forest soil carbon stock surveys:

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 17296 China Soil Classification and Code LY/T 1237 Determination of forest soil organic matter and calculation of carbon-nitrogen ratio LY/T 1952-2011 Long-term positioning observation method of forest ecosystem LY/T 2188.1 Technical Specifications for Forest Resource Data Collection Part 1: Continuous Forest Resource Inventory LY/T 2188.2 Technical Specifications for Forest Resource Data Acquisition Part 2: Survey of Forest Resource Planning and Design

3 Terms and Definitions

The following terms and definitions apply to this document:

forest soil forest soil the general term for all kinds of soils that develop under woody vegetation:

Note: This document refers to the soil under natural forests, secondary forests and artificial forests, as well as barren hills and wasteland suitable for forests:

Soil carbon storage soil carbon pool the total amount of soil organic carbon and inorganic carbon in a specific area and depth of soil:

Note: The storage of soil organic carbon is the average between the amount of plant, animal and microbial residues entering the soil and the amount of decomposition loss under the action of soil microorganisms:

balance result:

Soil carbon density soil carbon density the storage of soil organic carbon per unit area at a specified depth of soil layer:

Note: The unit is tC/hm2 or kgC/m2:

4 General provisions

4.1 Scope of investigation geographic or administrative area: Including countries, administrative regions, ecological function areas, geographical units, forest types, forest stands and other scales: