| 密度指数与林分测树因子数学模型及应用 |
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| 引用本文： | 刘君然.密度指数与林分测树因子数学模型及应用[J].林业科学,1994,30(3):247-252. |
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| 作者姓名： | 刘君然 |
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| 作者单位： | 内蒙古根河林业局 |
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| 摘 要： | 以落叶松（ＬａｒｉｘｇｍｅｌｉｎｉｉＲｕｐｒ．）天然林标准地为材料，选取３０块大样本标准地，通过Ｎ＝ａＤ－ｂ得出林分测树因子数学模型。Ｇ＝ａＳＤＩｂ（Ｈ－１．３）ｃ式为密度指数、树高与断面积模型；以Ｙ＝ａＳＤＩｂＸｏ式为密度指数与直径、株数、断面积的模型。模型可用于编制树高标准表、直径标准表、密度标准表以及密度控制图等。
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| 关 键 词： | 密度指数，林分测树因子，数学模型，可变密度收获表，密度标准表，密度控制图 |
ESTABLISHMENT AND APPLICATION OF THE DENSITY INDEX AND MATHEMATICAL MODEL OF FOREST INVENTORY FACTORS |
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| Liu Junran.ESTABLISHMENT AND APPLICATION OF THE DENSITY INDEX AND MATHEMATICAL MODEL OF FOREST INVENTORY FACTORS[J].Scientia Silvae Sinicae,1994,30(3):247-252. |
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| Authors: | Liu Junran |
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| Institution: | Genhe Forestry Bureau Inner Mongolia 022350 |
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| Abstract: | Through the formula, N=aD-b, two mathematical models were established with inventory factors based on 30 plots sampled in the natural stands of Larix qmelinii Rupr.(1),G=aSDIb(H-1.3)c and(2),Y=aSDIbXc where S for stand; D,density;I,indexl H,tree height and X,the number of stems.These models could be used to generate the standard tables for tree height, dbh, stand density and density control map. |
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| Keywords: | Density index Inventory factors Mathematical model Changeable density-yielding table Density control map |
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