DB2104T 0028-2023 根径-胸径对照表 软阔　

ICS65.020.01B60DB2104抚顺市市场监督管理局发布IDB2104/T0028-2023前言 12规范性引用文件 13术语和定义 14确定模型 25根径-胸径对照表建立和使用 2附录A（规范性附录）根径-胸径对照表软阔 3DB2104/T0028-2023本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规定起草。本文件由新宾满族自治县自然资源事务服务中心提出。本文件由抚顺市自然资源局归口。本文件起草单位：新宾满族自治县自然资源事务服务中心。本文件主要起草人：胡喜华、杨振宇、王正利、陈明海、胡文宇、孙恒坤、金山、杨振强、李云霄、王立明、余连城、翟金凤、杨希恒、许水威、梁浩然、赵东伟、王岩、黄舜威、勇环英、纪宏、荣光、王福英、庞家举、封福才、高鼎淇、邢锡铜、郑扬、骆崇云、赵光杰、李霞、杨晓红、邱健、宋殿臣、于国斌、岳杰、裴嘉倩、于跃文、许成林、王爱国、盖阔、王守国、张军、聂大光、王海旭、刘旭、李钦、孙涛、李利业、郭兴隆、金钏、陆国辉、曹官、魏春雷、陈德辉。1DB2104/T0028-2023根径-胸径对照表软阔本文件规定了抚顺市《根径-胸径对照表软阔》的规范性引用文件、术语和定义、确定模型、根径-胸径对照表建立和使用。本文件适用于软阔的单株根径-胸径对照测算。2规范性引用文件下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅所注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。LY/T2416林业数表编制数据采集技术规程3术语和定义下列术语和定义适用于本文件。3.1软阔凡是木材端面硬度达到701公斤/平方厘米及其以下的，即称软阔叶树种。包括白桦、山杨、柳、椴树等。3.2胸径树干直径分为带皮直径和去皮直径两种，测量单位是厘米（cm）。树干直径随其在树干上的位置不同而变化，从根颈至树梢树干直径呈现出由大到小的变化规律。其中位于距根颈1.3m处的直径，称为胸高直径，简称为胸径。3.3根径指林木距地面（坡面时上坡口）5cm处伐根围尺直径。3.4建模单元具有地域的连接性和行政区的完整性以及自然条件的一致性的区域组合。2DB2104/T0028-20234确定模型根径-胸径模型D1.3=0.771979D0.05+式中：D0.05—根径；D1.3—胸径。5根径-胸径对照表建立和使用5.1根径-胸径对照表建立以非线性模型为基础，根据编表样本根径变化范围，按胸径表格式建立根径-胸径对照表软阔。详见附录A。5.2使用范围根径-胸径对照表应在编表区域内满足编表单元条件的林木中使用，根径径阶6cm-76cm。本文件可参照确定模型适当推算至根径200cm。本文件的最终解释权归编制单位。3DB2104/T0028-2023（规范性附录）根径-胸径对照表软阔表1根径64.74.74.84.9555.15.25.35.475.45.55.65.75.85.85.966.16.286.26.36.46.56.56.66.76.86.96.9977.17.27.37.37.47.57.67.77.77.87.988.18.18.28.38.48.58.58.68.78.88.98.999.19.29.39.39.49.59.69.79.79.89.920.020.120.120.220.320.420.520.620.620.720.820.921.021.121.121.221.321.421.521.621.621.721.821.922.022.122.122.222.322.422.522.622.622.722.822.923.023.123.123.223.323.423.523.623.623.723.823.924.024.124.124.224.324.424.524.624.624.724.824.925.025.125.125.225.325.425.525.625.625.725.825.926.026.126.226.226.326.426.526.626.726.726.826.927.027.127.227.227.327.427.527.627.727.727.827.928.028.128.228.228.328.428.528.628.728.728.828.929.029.129.229.329.329.429.529.629.729.829.829.930.04DB2104/T0028-2023根径-胸径对照表软阔表1（续）根径30.130.230.330.330.430.530.630.730.830.930.931.031.131.231.331.431.431.531.631.731.831.931.932.032.132.232.332.432.532.54032.632.732.832.933.033.033.133.233.333.44133.533.533.633.733.833.934.034.134.134.24234.334.434.534.634.634.734.834.935.035.14335.235.235.335.435.535.635.735.735.835.94436.036.136.236.336.336.436.536.636.736.84536.836.937.037.137.237.337.437.437.537.64637.737.837.937.938.038.138.238.338.438.54738.538.638.738.838.939.039.039.139.239.34839.439.539.639.639.739.839.940.040.140.14940.240.340.440.540.640.740.740.840.941.041.141.241.241.341.441.541.641.741.841.841.942.042.142.242.342.442.442.542.642.742.842.942.943.043.143.243.343.443.543.543.643.743.843.944.044.144.144.244.344.444.544.644.644.744.844.945.045.145.245.245.345.445.545.645.745.845.845.946.046.146.246.346.346.446.546.646.746.846.946.947.047.147.247.347.447.547.547.647.747.847.948.048.048.148.248.348.448.548.648.648.748.848.949.049.149.249.249.349.449.56049.649.749.849.849.950.050.150.250.350.36150.450.550.650.750.850.950.951.051.151.26251.351.451.551.551.651.751.851.952.052.16352.152.252.352.452.552.652.752.752.852.96453.053.153.253.253.353.453.553.653.753.86553.853.954.054.154.254.354.454.454.554.66654.754.854.955.055.055.155.255.355.455.56755.655.655.755.855.956.056.156.256.256.36856.456.556.656.756.756.856.957.057.157.26957.357.357.457.557.657.757.857.957.958.05DB2104/T0028-2023根径-胸径对照表软阔表1（续）根径58.158.258.358.458.558.558.658.758.858.959.059.159.159.259.359.459.559.659.759.759.859.960.0