江西省丘陵区湿地松多效益经营模式适宜经营密度的研究

通过拟合林分枝叶生物量及林下植被生物量与林分郁闭度的关系求算出湿地松水保林的适宜郁闭度范围，利用林分郁闭度与林分平均直径和林分株数密度的关系式，导算出湿地松水保林的适宜密度，用公式N1=15761.64/D表示，以价值生长量最大作最优指标函数，采用动态规划方法求算出材脂两用林的最适经营密度线N2＝23625．12D^-1.1523，综合得出江西省丘陵区湿地松多效益经营模式适宜经营密度就是以上两条密度线所夹范围。

Suitable management density of multi-benefit management pattern in Pinus elliottii plantation on hilly region of Jiangxi Province.

By means of modeling the relationships between stand branch and leaf biomasss, u nderstory vegetation biomass and forest canopy density, respectively, the suitab le canopy density of Pinus elliottii plantation for soil and water conservat ion was calculated. Using the models of stand canopy density and average tree di ameter and stocking density, the suitable stand density of Pinus elliottii f or soil and water conservation was made out, and expressed by the formula N 1 = 15 761.64/D . Using the stand density and the stand basal areas per hectare as the i ndependent variables, introducing the maximum stand value increment to be optima l index function, the series of optimal stand management density of Pinus elli ottii stands for timber and resin production were worked out by means of dynam ic programming( N 2=23635.12D -1.1523 abstractThe suitable management density for multi benefit management pattern in Pinus elliottii plantation on the hilly region of Jiangxi Province was in the range between the above two models.