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LY/T 2102-2013: Technical regulations on construction of two-variable tree volume table
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Technical regulations on construction of two-variable tree volume table
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LY/T 2102-2013
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Basic data | Standard ID | LY/T 2102-2013 (LY/T2102-2013) | | Description (Translated English) | Technical regulations on construction of two-variable tree volume table | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B60 | | Classification of International Standard | 65.020 | | Word Count Estimation | 16,152 | | Quoted Standard | LY/T 1646; (UNCDF Lin [2004] No. 25) National Forest Inventory (NFI) Technical Regulations | | Regulation (derived from) | State Forestry Bulletin 2013 No. 8; industry standard filing Notice No. 5 of 2013 (No. 161 overall) | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies: powdery material bulk machine (hereinafter referred to as bulk machine) specifications, the basic parameters, technical requirements, test methods, inspection rules and packaging, labeling, storage and transportation. This standar | LY/T 2102-2013: Technical regulations on construction of two-variable tree volume table---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical regulations on construction of two-variable tree volume table
ICS 65.020
B60
People's Republic of China Forestry Industry Standard
Technical regulations for the preparation of binary standing timber tables
Published on.2013-03-15
2013-07-01 implementation
State Forestry Administration released
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 sample collection 1
4.1 General Provision 1
4.2 Table area and table unit determination 1
4.3 Sample size 2
4.4 Basic situation investigation record 2
4.5 Sample wood data collection 3
5 Data Processing 4
5.1 Scatter plot 4
5.2 Triple standard deviation 4
5.3 Sample validity 4
6 Binary Standing Volume Mathematical Model and Parameter Estimation 4
6.1 Binary Standing Volume Mathematical Model 4
6.2 Evaluation method of fitting effect 4
7 model selection 6
7.1 Model Selection Principle 6
7.2 Model selection 6
8 Model Applicability Test 6
8.1 Inspection data 6
8.2 Test indicator 6
8.3 Model Applicable Conditions 7
9 Binary standing timber table expansion and use 7
9.1 Binary Standing Timber Volume Table 7
9.2 Use of binary standing timber tables 8
10 Preparation of results 8
10.1 Binary Standing Timber Volume Table 8
10.2 Preparation of the report 8
10.3 Original materials used for cataloging and inspection 8
10.4 Compilation of computer software and other technical materials 8
10.5 Electronic Document 8
Appendix A (Normative Appendix) Data Collection Survey Form 9
Appendix B (informative appendix) Commonly used binary standing timber mathematical model 11
Reference 12
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the State Forestry Administration Survey Planning and Design Institute.
This standard is under the jurisdiction of the National Forest Resources Standardization Technical Committee.
This standard was drafted. State Forestry Administration Survey Planning and Design Institute.
The main drafters of this standard. Weng Guoqing, Yan Hongwei, Bai Weiguo, Li Hui, Zhang Chengcheng, Wang Hezhi, Wang Hongchun, Zhou Jiemin.
Technical regulations for the preparation of binary standing timber tables
1 Scope
This standard specifies the number of sample woods, data collection and processing, volume model selection, parameter estimation, model checking for the preparation of binary standing timber tables.
Technical requirements such as inspection and volume table development.
This standard applies to the preparation and revision of the binary timber volume table nationwide.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
LY/T 1646 Forest Harvesting Procedures
Technical Regulations for the Continuous Inventory of National Forest Resources (Lin Zifa [2004] No. 25)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Standing timber
Growing forest trees.
3.2
Standing timber volume table
The tree-root diameter, tree height and other tree-measuring factors are used as independent variables, and the tree-wood product is the functional relationship established by the dependent variable. Including tables, mathematical models
Etc.
3.3
Binary standing timber table two-variablevolumetable
Taking the DBH and tree height as the independent variables, the Timber Product is the functional relationship established by the dependent variable.
4 sample collection
4.1 General provisions
4.1.1 To make full use of existing sample data. Existing wood data meets the requirements of 4.5 and can be used directly; the number of available samples
When the minimum requirements for the preparation of the table are not met, the insufficient part should be collected.
4.1.2 The diameter and volume units are cm and cubic meters respectively. The number of samples is the plant. The height of the tree and the length of the trunk are meters. The slope unit is
Degree, altitude and soil thickness are in meters and centimeters. The number of trees per unit area of the forest is kept as an integer, and the diameter of the forest and the average diameter of the forest are guaranteed.
Leave 1 decimal place, stand closure degree, forest tree height and forest stand average height, stand area per unit area, forest stand unit area reserve 2 places
Decimal, forest wood product retains 4 decimal places, slope, altitude, soil thickness retains an integer.
4.2 Table area and table unit determination
4.2.1 Binary standing timber volume table can be a tree species natural distribution area, a national forestry area first level area, a forestry division second level area, a river basin or a provincial level administration
The regional unit serves as the table area.
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