马尾松二元立木材积表

马尾松二元立木材积表1范围本文件规定了XX自治区马尾松二元材积主要技术计量术语与定义、相关模型及表的使用方法。本文件适用于马尾松林木在广西的适生区。2规范性引用文件下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件,仅该日期对应的版本适用于本文件；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。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LY/T2416-2015林业数编制数据采集技术规程LY/T2102-2013二元立木材积表编制技术规程3术语和定义下列术语和定义适用于本文件。1月匈径thediameteratbreastheight从根茎起向上L3nl处树干的带皮直径。径阶thediametercIasses林木胸径的整化，即把一定区间范围内的胸径整化为胸径数值阶层，并用该区间范围内的中间数值来表示。相对胸径therelativediameteratbreastheight指样地各径阶平均胸径或单株立木胸径与样地平均胸径的比值。地径thegrounddiameter指立木根茎起向上5cm处的直径。树高thetreeheight从根茎起向上到树梢的树干全部高度。树高阶thetreeheightcIasses林木树高的整化，即把一定区间范围内的树高整化为树高数值阶层，并用该区间范围内的中间数值来表示。相对树高therelativetreeheight指样地各径阶平均树高或单株立木树高与样地平均树高的比值。二元立木材积表thebinarytreevoIumetabIe指依据立木材积与胸径、树高两个因子的关系编制的立木材积计量数表。立木材积thetreevoIume不包括枝丫材积的全树干材积。4二元立木材积计算相关模型及表马尾松二元立木材积模型及表V=V=0.00007645x 咖’ (1)式中：V 立木材积，单位：n?;D 胸径，单位：cm;H——树高，单位：mo依据该模型展开的二元立木材积表见附录A。马尾松地径对胸径回归模型D=-L4W27<85^Dfl式中：D 胸径，单位：cm;Do 地径，单位：cm。马尾松相对树高曲线模型R4-(］弋2用支4,1%】以(1十工254外与1附3式中：Rh——相对树高；Rd 相对胸径;e——自然指数。5使用方法径阶划分径阶按2cm级距划分，如5.0〜6.9cm为6径阶，7.0〜8.9cm为8径阶。树高阶划分树高阶按1m级距划分，如5.5〜6.4m为6树高阶，6.5〜7.4m为7树高阶，但4.0〜4.4m为4树高阶。胸径计算胸径一般需要实测；若在无法实测的情况下（如采伐迹地上只保留有伐根的情况），计算原立木胸径可依据实测的地径代入模型（2）直接计算。相对胸径计算根据样地每木检尺计算结果得出样地平均胸径，以样地各径阶平均胸径或各单株立木胸径除以样地平均胸径得到各径阶相对胸径或各单株立木相对胸径。相对树高计算计算单株立木相对树高、径阶相对树高可根据单株立木、径阶相对胸径代入模型（3）直接计算。树高计算进行样地调查时，一般需要对各径阶平均树高进行实测；为了提高工作效率，也可将各径阶相对胸径代入模型（3）计算得出相对树高值再乘以样地平均树高得到各径阶的树高估计值。立木材积计算计算单株立木材积可依据实测或模型估计的胸径、树高值查附录A,或者将单株立木实测或模型估计的胸径、树高代入模型（1）直接计算。附录A（规范性）广西马尾松二元立木材积表表A.1广西马尾松二元立木材积表DH456789101112131460.007230.009050.010880.012710.014540.016370.018200.02004———8—0.015010.018040.021070.024110.027150.030190.033240.036290.039340.0423910——0.026710.031200.035690.040200.044700.049210.053720.058240.0627612———0.042990.049190.055390.061600.067810.074030.080250.0864814————0.064500.072640.080780.088930.097080.105240.1134116—————0.091860.102160.112460.122780.133100.1434318——————0.125670.138350.151030.163730.1764320———————0.166510.181780.197060.2123522———————0.196900.214950.233020.25110240.250490.271550.2926226—0.312590.3368528—0.38373300.43324DH1516171819202122232425100.067280.071800.07633120.092710.098940.105180.111420.11766——————140.121580.129750.137930.146120.154300.162490.170690.17889———160.153760.164100.174440.184790.195150.205500.215870.226230.236610.24698—180.189150.201860.214590.227320.240060.252800.265550.278300.291060.303820.31659200.227650.242960.258270.273590.288920.304260.319600.334950.350310.365670.38104220.269190.287290.305400.323520.341650.359780.377920.396070.414230.432400.45057240.313700.334790.355900.377010.398140.419270.440410.461560.482720.503890.52506260.361110.385400.409690.434000.458310.482640.506980.531330.555690.580050.60443280.411380.439040.466720.494410.522110.549830.577550.605290.633040.660800.68856300.464450.495680.526920.558190.589460.620750.652060.683370.714700.746040.77739320.520270.555250.590260.625270.660310.695360.730430.765510.800600.835700.8708234—0.617720.656660.695620.734600.773590.812600.851630.890670.929720.9687936—0.683040.726100.769180.812280.855390.898530.941680.984851.028041.0712438——0.798530.845900.893300.940720.988161.035611.083091.130581.1780940——0.873910.925750.977631.029521.081441.133371.185331.237311.2893042———1.008691.065211.121761.178321.234911.291531.348161.4048144———1.094681.156021.217391.278781.340191.401631.463091.52457表A.1广西马尾松二元立木材积表（续）DII151617181920212223242546———1.183691.250021.316371.382751.449161.515591.582051.6485348————1.347161.418671.490211.561781.633381.705001.7766550————1.447431.524261.601131.678031.754951.831901.9088852————1.550791.633111.715461.797851.880271.962712.0451954————1.657211.745181.833181.921222.009292.097402.1855456—————1.860441.954252.048112.142002.235922.3298858—————1.978862.078652.178482.278352.378252.4781960—————2.100432.206352.312312.418312.524352.6304362—————2.225112.337312.449572.561862.674192.7865764—————2.352882.471532.590222.708962.827752.9465866—————2.483712.608962.734252.859602.984993.1104268—————2.617582.749582.881633.013743.145883.2780870—————2.754482.893383.032343.171353.310413.4495272————2.748482.894383.040343.186353.332423.478543.6247274————2.884163.037253.190423.343643.496923.650263.8036576————3.022643.183093.343613.504193.664833.825523.98628DH2627282930313233343536180.32936200.396410.411780.42716220.468740.486920.505110.52330———————240.546250.567430.588630.609830.631040.65225—————260.628810.653200.677600.702010.726420.750840.77526————280.716340.744130.771920.799720.827540.855350.883180.911010.93885——300.808750.840120.871500.902890.934290.965690.997111.028531.059961.09140—320.905950.941090.976241.011401.046581.081761.116951.152151.187361.222581.25780341.007871.046971.086071.125191.164321.203461.242611.281771.320941.360121.39931361.114451.157681.200921.244171.287441.330721.374011.117311.460621.503951.54728381.225621.273161.320711.368281.415861.463461.511071.558691.606321.653971.70162401.341311.393341.445381.497441.549521.601601.653711.705821.757951.810101.86225421.461481.518171.574871.631601.688341.745091.801861.858651.915451.972262.02909441.586071.647591.709131.770691.832271.893861.955472.017102.078742.140402.20207461.715031.781561.848101.914661.981252.047852.114472.181112.247762.314432.38112481.848321.920011.991732.063472.135222.207002.278802.350622.422452.494302.56617501.985892.062922.139972.217052.294152.371272.448412.525572.602752.679952.75717522.127692.210232.292782.375362.457972.540592.623242.705912.788612.871322.95405542.273702.361892.450122.538362.626642.714932.803252.891602.979973.068353.15676562.423872.517892.611932.706012.800112.894242.988403.082583.176783.271003.36525表A.1广西马尾松二元立木材积表（续）DHI)112627282930313233343536582.578162.678162.778202.878262.978363.078483.178623.278803.379003.479223.57947602.736542.842692.948873.055083.161323.267593.373893.480223.586583.692963.79936622.898983.011433.123913.236433.348973.461553.574163.686803.799473.912174.02489643.065443.184353.303293.422273.541283.660323.779403.898504.017644.136814.25600663.235903.361423.486973.612563.738193.863853.989554.115284.241044.366844.49266683.410323.542603.674923.807293.939694.072124.204604.337104.469644.602224.73482703.588683.727883.867124.006404.145734.285094.424494.563934.703404.842914.98245723.770943.917214.063524.209884.356284.502734.649214.795734.942285.088875.23550743.957094.110584.264114.417704.571324.724994.878715.032465.186255.340085.49394764.147094.307954.468864.629824.790824.951875.112965.274105.435275.596495.75774DH3738394041424344454647341.43851—361.590631.63398—381.749291.796971.84466401.914421.966602.018792.07099———————422.085932.142782.199652.25653———————442.263762.325462.387172.448902.51064——————462.447822.514542.581272.648012.714772.78155—————482.638062.709962.781882.853812.925762.99772—————502.834402.911662.988933.066223.143523.220843.29817————523.036803.119573.202363.285173.367993.450833.53369————543.245193.333643.422113.510603.599113.687633.776173.86473———563.459523.553813.648133.742463.836813.931184