落叶松人工林根径材积表和合理经营密度研究

Ground Diameter Volume Table and Reasonable Density Management of Larix gmelinii Stand

利用小兴安岭地区人工落叶松(Larix gmelinii)林标准地调查资料,建立了落叶松胸径d1.3与根径d0.0、胸径d1.3和冠径Cw的相关关系回归模型。结果表明,胸径d1.3与根径d0.0、胸径d1.3和冠径Cw的相关关系模型都以二次抛物线为最优;还利用胸径d1.3与根径d0.0的关系,编制了落叶松根径立木材积表,并探讨了落叶松人工林的理论密度和郁闭度为0.7和0.8时的适宜经营密度,对落叶松人工林的盗伐案件处理和经营管理具有一定的参考价值。

Based on the data from sample plots of Larix grnelinii stand Xiaoxinganling, Heilongjiang Province, the regression models of DBH and ground diameter, as well as crown diameter were established. The results showed that quadratic parabola regression function was the optimal one of DBH -ground diameter, DBH -Ws. In attention, a ground diameter volume table of L. gmelinii stand was also constructed. Theoretical density and optimal management density under 0.7 and 0. 8 were discussed. The results are beneficial to enhance the level of forest resource management and accurate to estimate volume of L. grnelinii.