水杉年轮宽度 晚材率

本数据记录了水杉中年轮宽度 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 growth ring width and latewood percentage for middle-aged dawn redwood, log number, specimen ID, distance between complete growth ring boundaries, number of growth rings per centimeter, total number of growth rings within the distance between complete growth ring boundaries, total latewood amount, latewood percentage, ring width and other relevant records. All measured physical and mechanical properties of wood directly reflect the strength and other characteristics of this wood species, providing scientific data for wood utilization and the formulation of wood structure codes. This database includes physical and mechanical test data and their corresponding test methods (please refer to Annex 1: National Standard of the People's Republic of China GB1927～1943-91 *Test Methods for Physical and Mechanical Properties of Wood*, and Annex 2: Definitions of various items of wood physical and mechanical properties).

搜集汇总

背景与挑战

背景概述

该数据集记录了水杉的年轮宽度和晚材率等木材物理力学性质参数，包括序号、试样序号、整年轮边界距离、晚材率等8个字段，共114行数据。数据通过实验室检测测量获取，基于国家标准，质量可靠，错误率低，旨在为木材强度评估和利用提供科学依据。数据集属于国家林业和草原科学数据中心的木材性质数据库，发布于2019年，格式为表格，共享方式为协议公开。