箭杆杨年轮宽度 晚材率

本数据记录了箭杆杨中年轮宽度 晚材率的序号、记录本序号、试样序号、整年轮边界距离、一公分内年轮数、整年轮边界距离内年轮总数、晚材之总量、晚材率、年轮宽度等记录。木材物理力学的各项测定指标，直接反映此种木材的强度等特性，为木材利用和木结构的规范等提供科学数据。本数据库包括物理力学数据和其试验方法（请参看附件1中华人民共和国国家标准GB1927～1943-91《木材物理力学性质试验方法》，附件2木材物理力学各个项目的定义）。

This dataset records the serial numbers of ring width and latewood percentage, logbook serial numbers, specimen serial numbers, total distance between annual ring boundaries, number of annual rings per centimeter, total number of annual rings within the total boundary distance, total latewood volume, latewood percentage, ring width and other related records for Populus nigra var. pyramidalis (Arrow Pole Poplar). Various measured indicators of wood physical and mechanical properties directly reflect the strength and other characteristics of this wood, providing scientific data for wood utilization and timber structure code formulation. This database includes physical and mechanical property data and their corresponding test methods; please refer to Attachment 1: National Standard of the People's Republic of China GB1927–1943-91 Test Methods for Physical and Mechanical Properties of Wood, and Attachment 2: Definitions of Various Items of Wood Physical and Mechanical Properties.

搜集汇总

背景与挑战

背景概述

该数据集记录了箭杆杨的年轮宽度和晚材率等物理力学性质指标，包括年轮边界距离、年轮数量、晚材总量和晚材率等具体数据。这些指标直接反映木材强度特性，为木材科学利用和规范制定提供科学依据。数据来源于实验室检测，遵循国家标准，质量可靠，属于木材性质数据库的一部分。