NY/T 672-2003
Active
T/CSF 022-2021
Active
Group standards
T/CSF 022-2021 Guidelines for identifying natural juvenile broadleaf forests in the subtropical zone in China
T/CSF 022-2021 Guidelines for identifying natural juvenile broadleaf forests in the subtropical zone in China
Price:
$ 30
Basic Information
Standard Code:
T/CSF 022-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Economic crops
ICS Name:
Other standards related to agriculture and forestry
Publish Date:
2021-12-02
Implement Date:
2021-12-02
Scope
Scope: This guideline specifies the indicators, standards, and description methods for identifying natural broad-leaved seedlings in the subtropical zone of Central Asia. This guideline is applicable to the identification and description of natural broad-leaved seedlings in the subtropical region of Central Asia. Main technical content: 1. Scope: This guideline specifies the indicators, standards, and description methods for identifying natural broad-leaved seedlings in the subtropical zone of Central Asia. This guideline is applicable to the identification and description of natural broad-leaved seedlings in the subtropical region of Central Asia. 2. Normative reference documents: The following documents are essential provisions of this document through normative references in the text. Among them, the referenced documents with a specified date are applicable only to the version corresponding to that date; the latest version (including all amendment sheets) of the non-dated referenced documents is applicable to this document. GB/T 26424 Technical Regulations for Forest Resource Planning and Design Surveys GB/T 38590 Technical Regulations for Continuous Forest Inventory LY/T 1812 Classification of Forest Land GB/T 15163 Technical Regulations for Shelterbelt (Sand) Afforestation 3. Terms and definitions: The following terms and definitions are applicable to this guideline. 3.1 Arbor forest land: A forest land with a tree canopy density greater than or equal to 0.20. 3.2 Canopy density: The ratio of the vertical projection area of tree crowns to the area of the forest land. 3.3 Storey: The layer of tree crowns formed by the tree crowns in the tree layer of the vertical structure of the forest. 3.4 Fully canopy-closed stand: A stand in which the tree crowns of the fully canopy-closed stand have clearly differentiated into a light-receiving layer and a non-light-receiving layer, and the tree crowns of the light-receiving layer are completely canopy-closed. 3.5 Light-rec
Development Information
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