蓝桉、直干桉工业原料林经济效果分析

按经营纤维用材为主，合理利用桉叶，主伐后实行萌芽更新的经营模式营造蓝桉、直干桉工业原料林，第１个实生林轮伐期净现值为５０５９元／ｈｍ２，内部收益率为３５６％，费用效益比为１５９。经营３个轮伐周期，其净现值为第１个实生林轮伐期的２３倍，内部收益率比第１个实生林轮伐期提高４２％，费用效益比提高２０８％。经济效益显著，抗风险能力强，是建立短期轮伐工业原料林的较佳选择。

Analysis on Economic Results of Eucalyptus globulus and E. maideni Industrial Raw Material Forests

A kind of wood fiber oriented management pattern of E. globulus and E. maideni industrial raw material forests was analysed and proposed in this paper. As the pattern suggested, eucalyptus leaves will be utilized reasonably, the stand will be regenerated from sprouts after main felling. The net present value, internal economic rate of return and ratio of cost to benefit of the first seedling stand rotation were 5 059 yuan/hm 2, 35 6% and 1 59 respectively. Compared with the first seedling stand rotation, this pattern composed of 3 rotations has increased the net present value, internal economic rate of return and ratio of cost to benefit by 2 3 times, 4 2% and 20 8% respectively. For its remarkable economic results and fairly resistance to risk, this pattern is a good choice to construct short rotation industrial raw material forests.