GB/T 32768-2016 in English

VALID

Identification atlas of Latin American tropical timber species

Issued on:2016-06-14
Implemented on:2017-01-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $700.00
$679.00

Standard No:	GB/T 32768-2016
Document status:	VALID
Title in English:	Identification atlas of Latin American tropical timber species
Title in Chinese:	拉丁美洲热带木材树种鉴定图谱
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2016-06-14
Implemented on:	2017-01-01
ICS Classification:	79.080-Semi-manufactures of timber
Chinese Classification:	B69-Timber and processed timber
Professional Classification:	GB-National Standard
Related Keywords:	tropical wood identification standards latin american tropical timber species introduction standard background important commercial wood species identification atlas core identification characteristics species pore arrangement axial parenchyma air-dry density
Related Topics:	Latin Statutory Atlas species Rotagram hot wood latin america Wood Species Identification Tree Species Identification Wood Species Identification Timber Species Identification Timber species Rubber identification tropical wood Basis for Identification of Tree Species e identification GBT32768 GB/T 32768-2016 american trees XRD pattern and AAS pattern

《GB/T 32768-2016拉丁美洲热带木材树种鉴定图谱》由TC41（全国木材标准化技术委员会）归口，TC41SC1（全国木材标准化技术委员会基础标准分会）执行，主管部门为国家林业和草原局。

Introduction

Standard Background and Technical Evolution

This standard was developed by the Chinese Academy of Forestry and systematically standardized the identification characteristics of 30 important commercial wood species in Latin America for the first time. Compared with LY/T 1788-2008 "Terms of Wood Properties", it has added microscopic structural indicators such as solid wood longitudinal section atlas and gum duct, filling the gap in tropical wood identification standards.

Comparison of core identification characteristics

Species	Pore arrangement	Axial parenchyma	Air-dry density(g/cm³)
Pattern paint	Diffuse porous wood	Sparse ring tubular	0.80-1.10
Improteria	Diffuse porous wood	Plurally winged	0.81-1.01
Purple Heart Suaeda	Diffuse-porous wood	Wing-shaped and ribbon-shaped	>0.80

Analysis of key identification factors

1. Identification of vessel pore types

The standard clearly distinguishes three types of vessel pore arrangements: diffuse-porous wood (such as rubber wood), ring-porous wood and semi-ring-porous wood. Among them, the radially arranged compound vessels (2-4) of Typha serrata are in sharp contrast to the single vessels of Vera wood.

2. Axial parenchyma characteristics

Through the combination of 7 forms such as wing-shaped (balsam pea), wheel-shaped (cod wood), and the visibility of wave marks (such as the obvious ant wood), the identification range can be quickly narrowed down.

Implementation suggestions

Prioritize preliminary screening through heartwood color change (such as the new section of purple heart wood from light brown to purple)
Combined with the three-section observation method to verify the width of wood rays (multiple rows of rays with 2-3 cells are common)
When testing density, pay attention to controlling the moisture content at the 12% benchmark

More samples: JJG 21-2008 JGJ 94-2008 JC/T 2453-2018

Sample only — not a preview of GB/T 32768-2016