长岭岗林场日本落叶松人工林适宜经营密度研究

依据湖北省建始县国营长岭岗林场日本落叶松人工林标准地调查资料,研究了胸径、树冠面积、株数的相关关系及规律,结果表明：①日本落叶松人工林树冠面积与胸径最优回归方程为：Y=2.823-0.129 4 X＋0.014 9 X2;②编制出日本落叶松不同径阶林分理论密度及郁闭度为0.7～0.9时的适宜经营密度表;③确定郁闭度0.8时为研究区最适宜经营密度,并计算出各标准地间伐强度。

Study on the Suitable Management Density of Larix kaempferi in Changlinggang Forest Farm

Based on the stationary observations of Larix kaempferi plantation in Jianshi County national Changlinggang Forest Farm located in Hubei,the correlation and rule between the diameter at breast height,canopy area and number of trees was studied.The results showed that：①The fittest model of the canopy area and diameter at breast height of Larix kaempferi plantation was Y = 2.823 0-0.129 4 X＋0.014 9 X2;②A suitable management density table of Larix kaempferi was charted when the theoretical density and canopy density of Larix kaempferi with different diameter class was between 0.7 and 0.9;③We confirmed the optimal management density in the study area when the canopy density was 0.8,and calculated the thinning intensity for each sample plot.