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LY/T 3180-2020: Technical regulations for soil remediation of degraded forestlands in the dry and dry-hot valley regions in China
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Technical regulations for soil remediation of degraded forestlands in the dry and dry-hot valley regions in China
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LY/T 3180-2020
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Basic data | Standard ID | LY/T 3180-2020 (LY/T3180-2020) | | Description (Translated English) | Technical regulations for soil remediation of degraded forestlands in the dry and dry-hot valley regions in China | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B60 | | Classification of International Standard | 01.040.65 | | Word Count Estimation | 9,983 | | Date of Issue | 2020-03-30 | | Date of Implementation | 2020-10-01 | | Regulation (derived from) | Announcement No. 6 of 2020 by the State Forestry and Grassland Bureau | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 3180-2020: Technical regulations for soil remediation of degraded forestlands in the dry and dry-hot valley regions in China
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Technical regulations for soil remediation of degraded forestlands in the dry and dry-hot valley regions in China
ICS 01.040.65
B60
LY
People's Republic of China Forestry Industry Standard
Technical Regulations for Soil Remediation of Degraded Forest Land in Arid and Dry Hot Valley
2020-03-30 release
2020-10-01 Implementation
Issued by the State Forestry and Grassland Administration
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Terms and definitions...1
4 Soil restoration measures...1
5 Disease and pest control...3
6 File Management...3
Appendix A (informative appendix) Main nitrogen-fixing broad-leaved trees and shrub species and their suitable habitats, seed germination methods and minimum initial planting density table...4
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the State Forestry and Grassland Administration.
Drafting organizations of this standard. Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Resource Insects, Chinese Academy of Forestry
Research Institute, International Center for Bamboo and Rattan, Sichuan University, Yunnan Academy of Forestry and Grassland Sciences, Sichuan Academy of Forestry Sciences.
Drafters of this standard. Liu Shirong, Miao Ning, Meng Guangtao, Liu Xingliang, Li Kun, Su Jianrong, Zhang Yuandong, Wang Yi, Luan Junwei, Feng Qiuhong,
Li Pinrong, Ma Rui.
Technical Regulations for Soil Remediation of Degraded Forest Land in Arid and Dry Hot Valley
1 Scope
This standard specifies the technical regulations for soil remediation of degraded forest land in arid and dry hot valleys, including remediation principles, tree species selection, site preparation, seedlings
Technical requirements for wood and seed quality, seedling and direct seeding afforestation, tending and management, pest control and file management.
This standard is applicable to soil restoration of degraded forest lands in dry and hot regions of my country.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB 6000 Seedling quality classification of main afforestation tree species
GB 7908 Forest Seed Quality Classification
GB/T 15776 Technical Regulations for Afforestation
GB/T 15781 Forest Tending Regulations
LY/T 1880 Woody Plant Seed Germination Technology
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Degraded forestland
The sparse forest land formed due to severe disturbances such as logging and geological disasters presents difficulties in vegetation restoration and regeneration, and the soil humus layer is barren and the soil
There are phenomena such as compaction, desertification, and barrenness.
4 Soil restoration measures
4.1 Repair principle
Follow the principle of ecological restoration, give full play to the role of nitrogen-fixing broad-leaved trees in soil improvement, soil restoration, water and soil conservation, etc., and promote
The restoration of degraded woodland soil and the positive succession of communities in the dry and hot valley regions can achieve the purpose of restoring the degraded soil.
4.2 Tree species selection
Priority is given to good native drought-tolerant, nitrogen-fixing broad-leaved trees or shrubs. See Appendix A for their types and suitable habitats.
4.3 Site preparation
4.3.1 Site preparation time
One month before winter or afforestation.
4.3.2 Site preparation method
4.3.2.1 Cave-like site preparation
Applicable to various tree species and site conditions. Select suitable areas for afforestation tree species, and arrange planting holes along the contours so that the hole faces are inclined inward and slope
The surface is at an angle of 10°～20°, and the specifications of the planting holes vary with forest types, seedling specifications and site conditions.
4.3.2.2 Site preparation for fish scale pits
Suitable for river valleys and steep slope areas. The fish-scale pits are approximately half-moon-shaped pits, the size of which varies with forest species, seedling specifications and site conditions.
High and low, the long diameter expands along the contour, and the short diameter is slightly smaller than the long diameter.
4.3.2.3 Ditch land preparation
Suitable for land preparation for afforestation. Dig planting trenches in the planting row, dig pits for planting in the trenches at a certain pitch, and keep the trenches for a long time.
4.3.2.4 Catchment and land preparation
Suitable for flat afforestation land. Trench the ditch in a relatively flat afforestation land, turn the soil on both sides of the ditch, mound the sides of the ditch to form side slopes, and then drive in the ditch.
Horizontal ridge, a certain area of double-sided slope catchment area enclosed between two side slopes and two horizontal ridges.
4.4 Quality of seedlings and seeds
4.4.1 The quality requirements of afforestation tree species seedlings shall be implemented in accordance with GB 6000, and level I and II seedlings shall be selected. For attachments not covered in GB 6000
For the tree species in record A, choose seedlings that are robust, well-developed, free from pests and diseases, and without mechanical damage.
4.4.2 The quality requirements for direct seeding afforestation seeds shall be implemented in accordance with GB 7908, with I and II seeds selected. For attachments not covered in GB 7908
For the tree species listed in A, choose mature, full-grained, and vigorous seeds.
4.5 Seedling afforestation
4.5.1 Seedling method
4.5.1.1 For bare-rooted seedlings, the seedlings should be kept upright when planting, the planting depth should be appropriate, the roots of the seedlings should be fully extended, and it is conducive to drainage and
Store water to protect moisture.
4.5.1.2 For container seedlings, hole planting is adopted, and the planting hole should be slightly larger than the container size. When planting, the containers that are not easily degradable should be removed.
4.5.2 Planting density of seedlings
See Appendix A.
4.5.3 Afforestation time
Forestation in the rainy season. Container seedlings and seedlings with soil tufts can be planted in all seasons outside of the soil freezing period.
4.5.4 Mixed forest configuration
Mixed methods such as row, block, and random configuration can be adopted, and the number of individual tree species accounts for less than 50% of the total number of afforestation.
4.5.5 Requirements for replanting
Seedling planting refers to the regulations of GB/T 15776.When the survival rate is less than 85%, replanting should be carried out.
4.6 Live afforestation
4.6.1 Germination method
The seed germination of afforestation tree species shall be implemented in accordance with LY/T 1880 and Appendix A.
4.6.2 Live broadcast method
4.6.2.1 Holecasting
A few (large seeds) to dozens (small seeds) are sown evenly into the planting hole, and then covered with soil to suppress. The thickness of the covering soil is straight for the seeds
2 to 3 times the diameter, the thick soil can be thinner, sandy soil can be thicker.
4.6.2.2 Drilling
Sow the seeds in single or double rows on the sowing belt, continuously or intermittently, and put the seeds in the soil or cover the soil to suppress them. The thickness of the covering soil should be the diameter of the seed
3 times to 5 times, clay soil can be appropriately thinner, sandy soil can be appropriately thicker.
4.6.3 Live time
rainy season.
4.7 Upbringing and management
Tending for 3 to 5 years, the first tending is carried out in September to October, and the second year and thereafter in May to June. The technical requirements are in accordance with GB/T 15781
carried out.
5 Disease and pest control
Adopt intensive management methods, timely perform sanitary logging, promote the healthy growth of trees, prevent the occurrence of pests and diseases, and report them immediately if they are found
Related forestry departments.
6 File management
Refer to the regulations of GB/T 15776.
Appendix A
(Informative appendix)
The main nitrogen-fixing broad-leaved trees and shrub species and their suitable habitats, seed germination methods and minimum initial planting density table
The main types of nitrogen-fixing broad-leaved trees and shrubs and their suitable habitats, seed germination methods and minimum initial planting density are shown in Table A.1
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