Valid

LY/T 2103-2013Technical regulations on construction of volume table based at the groud diameter (English PDF)

根径立木材积表编制技术规程

Preview PDF

This is a limited preview

Buy now to download the full PDF (16 pages)

Need quotation for your management?

Get a formal quotation for LY/T 2103-2013 in 30 minutes.

Issued by

State Forestry Administration

Level / Type

National · Recommended

Issue date

January 1, 1970

Implementation date

January 1, 1970

Scope

LY/T 2103-2013 is the English-translated version of 根径立木材积表编制技术规程.

LY/T 2103-2013 — This standard specifies the root directory of the establishment of the number of samples of timber, data collection and processing, timber volume model selection, model solution, the model Type inspection and stand volume table expansion and other technical requirements.

This standard applies to the root cause of the nationwide establishment and revision of timber volume table.

Found what you need?

Document preview — LY/T 2103-2013

National Standard of the People's Republic of China

ICS: 65.020
Classification: B 60

Issued by: State Forestry Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Samples, test sample selection and data acquisition
4.1 Tableting area and layout unit to determine
4.2 Sample Book Selection and Data Collection
4.3 Test sample selection and determination
5 Data processing
5.1 Abnormal data to determine
5.2 Abnormal data removal principle
5.3 Sample Validity
6 Root diameter timber volume table preparation
6.1 Root diameter timber volume table preparation method
6.2 Root diameter - stump volume mathematical model for the establishment of root diameter timber table
6.3 Root diameter - DBH mathematical model root diameter timber table
7 Root diameter timber volume table preparation results
7.1 Root standing timber volume chart, or root diameter DB
7.2 Root diameter timber volume table or diameter DBH preparation report
7.3 The raw materials used in the compilation and testing
7.4 Other technical materials
Appendix A (Normative) Data Acquisition Survey
Appendix B (informative) common root diameter - timber volume mathematical model
Appendix C (informative) Common root diameter - DBH mathematical model

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard proposed by the State Forestry Administration Survey and Design Institute.

This standard by the National Forest Resources Standardization Technical Committee.

This standard was drafted. Survey and Design Institute of State Forestry Administration.

1 Scope

This standard specifies the root directory of the establishment of the number of samples of timber, data collection and processing, timber volume model selection, model solution, the model Type inspection and stand volume table expansion and other technical requirements.

This standard applies to the root cause of the nationwide establishment and revision of timber volume table.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document.

LY/T 1646 Forest harvesting practices the main technical regulations of forestry survey (Lin Zi [1989] No. 58)

3 Terms and definitions

The following terms and definitions apply to this document.

Root diameter treerootdiameter Trunk at a distance of 5 cm from the ground. For the root bulging species significantly rooted above the ground from the ground does not exceed 20cm Department Diameter, in data acquisition, can be determined according to species.

Root diameter timber volume tabletabletablethetreerootdiameter Taking root diameter as independent variable and standing timber volume as a function of dependent variable. Including forms, maps, mathematical models and other forms.

4 Table samples, test sample selection and data acquisition

4.1 Table area and layout unit to determine

4.1.1 Root diameter timber volume table area should be consistent with the one-dimensional timber volume table area. When there is no one dollar bill of lading, you can Provincial administrative units, or provincial district for the tabulation area. Divisions within the province according to tree species (group) natural distribution area, forestry zoning or three districts Watershed as a basis for the division.

4.1.2 In a table area, according to the species (group), the origin of the division table unit.

4.2 Sample selection and data collection table

4.2.1 Number of samples

Before the formal collection of the catalog samples, the distribution of the species should be initially determined based on the analysis of existing data or field investigation, etc.

Diameter range and so on, and according to the diameter range and not less than five principles of the division of diameter class. The number of samples for each diameter class according to equation (1) determine.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

How to Download LY/T 2103-2013

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.