GB/T 15781-2015Regulations for forest tending (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 15781-2009 "forest tending procedures." This standard compared with GB/T 15781-2009, in addition to editorial repair Change outside the main technical changes are as follows:

--- Modify the scope, content increased shelterbelt (see Chapters 1 and 2009 edition of the Chapter 1);

--- Modify the terms and definitions (see 3.1,3.4,3.5,

3.6 and 2009 edition of 3.1,3.2,3.7,3.8), an increase of about surgery Terms and definitions (see 3.3,3.4,3.5.2,3.7,3.8,3.9,3.10,3.11,3.12);

--- Revised forest classification (see 5.1,

5.2 and 2009 versions 5.1,5.2,5.3), tending to increase the cutting sequence (see 5.3);

--- Increased replanting, artificial promoting natural regeneration, cut irrigation (rattan) weeding tending mode (see 6.5,6.6,6.8,6.9,6.10), modified Pruning relevant content (see the 2009 edition

6.7 and Chapter 6);

--- Deleted woodland management chapter (see the 2009 edition 11.1,11.2,11.3,11.4), the fertilization, irrigation adjusted to the thinning mode (See 6.9, 6.10, and the 2009 edition of the 11.1, 11.2);

--- Remove the start of tending logging, interval, period end, the number of trees strength, strength accumulation process control indicators, specific indicators by the The provinces according to actual conditions (see 3.6,7.1,7.2,7.3,7.4 7.5,7.6,8.5,

8.6 and 2009 edition);

--- Deleted Appendix A, Appendix B, specific targets by the provinces according to the actual situation (see 7.1,7.2,7.3,

7.4 and 2009 edition Appendices A, B);

--- Amend Appendix C, Appendix D of the contents of this standard and as Appendix A, Appendix B (see Appendix A, Appendix B and the 2009 edition Appendix C, Appendix D);

1 Scope

GB/T 15781-2015 is the Chinese national standard on regulations for forest tending, in the field of food technology. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 3 July 2015 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 2 November 2015. Classification: ICS 67.080, CCS B66. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the basic requirements of young and middle age Tending objects tending conditions, measures, methods, technical indicators. This standard applies to timber across the country, the young and middle age shelterbelt forest tending.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 15776 Technical Specification for afforestation

GB/T 26424 Forest Resources Planning and Design Survey Technical Specification LY/T 1646 Forest Harvesting Practice LY/T 1724 short rotation and fast growing timber harvesting practice

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Forest tending foresttendingoperations From young forest canopy forest to collectively stand before maturity According to cultivate various silvicultural measures taken by the target, including tending harvesting, replanting, Pruning, watering, fertilizing, promoting natural regeneration and artificial as the case of the brush, cutting cane, weeding and other auxiliary operations activities.

3.2 Tree Species objectivetreespecies Suitable for local site conditions, to stabilize growth, in line with the business objectives of the species.

3.3 Target tree goaltree Purpose tree species, stand for stability and productivity play a significant role in growing good, excellent quality, long life, high-value, long-term Retained until the target diameter before cutting and uses of forests.

3.4 Prickly wolftree Party in the destination tree, huge crown, affect the normal growth of the target tree, non-target species of trees to be removed.

3.5 Tending felling intermediatecutting According stand development, competition and natural forest law and forest thinning cultivation objectives, timely and appropriate Fachu part forest, species composition adjustment And stand density, stand structure optimization, improve forest growth and environmental conditions, and promote the growth of remaining trees, shorten the cycle of foster silviculture measures. Upbringing Harvesting, also known as thinning, including translucent cutting, thinning, sanitary cutting and cutting the growth of four categories.

3.5.1 THINNING releasecutting In young forest canopy after the stage, when the object of the species of trees by the side of the upper or prickly pear, and other non-target species repressed by high growth