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采用企业动态经济评价方法对刺槐萌生林不同轮伐期的经济效果进行了评价;按NPV最大、IRR最大确定了林分经济成熟龄;通过敏感性分析确定了经济成熟龄区间。研究结果表明;以20a以上的轮伐期经营刺槐萌生林在经济上是不合算的;贴现率不低于12％时,在(?)立地级经营刺槐萌生林是不合理投资;以培育干材和小径级矿柱材等工业用材为目的,对刺槐萌生林实施8～13a短轮伐期作业法,从经济效果最佳角度考虑是比较合理的。
The dynamic economic evaluation method was used to evaluate the economic effects of different rotation stages of R. pseudoacacia forest. According to the maximum NPV and the maximum IRR, the mature maturity stage of forest was determined. The sensitivity analysis was used to determine the maturity stage of economic maturity. The results of the study show that it is economically uneconomical to operate R. pseudoacacia sprouts with a rotational period of more than 20a. When the discount rate is not less than 12%, it is an unreasonable investment to operate R. pseudoacacia forest at the riparian level. For the purpose of industrial materials such as lumber, timber and pillars, it is reasonable to carry out the short rotation method of 8 ~ 13a for the acacia sp. Forest from the best economic effect.