LY/T 3316-2022Technical regulations for vegetation restoration in small watersheds of the Loess Plateau (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.

1 Scope

This document stipulates the zoning of small watersheds on the Loess Plateau, the classification of site types, survey design, vegetation restoration technology, management and protection of restoration areas, and restoration evaluation.

Price and file management and other technical requirements.

This document is applicable to the Loess Plateau region, and other loess hilly regions shall be implemented as a reference.

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 2772 Inspection Rules for Forest Tree Seeds GB/T 2930.9 Inspection Rules for Grass Seeds - Weight Determination GB 6000 Quality classification of seedlings of main afforestation species GB 6141 Quality Grading of Legume Seeds GB 6142 Quality Grading of Grass Seeds GB 7908 Forest tree seed quality classification GB/T 15163 Technical Regulations for Closing Mountains (Sand) for Afforestation GB/T 15776 Afforestation Technical Regulations GB/T 16453.2 Technical specifications for comprehensive management of water and soil conservation Wasteland management technology GB/T 18337.3 Technical Regulations for the Construction of Ecological Public Welfare Forests GB/T 26424 Technical Regulations for Forest Resources Planning, Design and Survey

3 Terms and Definitions

The following terms and definitions apply to this document.

Below the second and third-order tributaries in the Loess Plateau area, which are bounded by the watershed and the outlet section of the downstream channel and have a catchment area of less than 5000hm2 Relatively independent and closed natural catchment area.

degraded ecosystem in a certain space-time background, some elements of the ecosystem or the whole system are disturbed by natural factors, human factors or both.

Quantitative and qualitative changes that are not conducive to the survival requirements of organisms and human beings occur, and the structure and function of the system occur with the original equilibrium state or evolution direction opposite displacement.

Using the principles of ecology, through the protection of existing plants, the closure of mountains for afforestation, or the creation of artificial trees, shrubs, and grass vegetation, repair or rebuild the damaged