【摘要】 以黄山松天然林为研究对象,构建了以立地质量等级为哑变量、林分年龄为自变量的地位级指数模型,根据哑变量取值特点,引入混合蛙跳算法求解方程参数。通过样地实测数据检验,表明建立的地位级指数模型可用于黄山松天然林立地质量评价。分别模拟了四类立地质量等级不同地位级指数下随林分年龄变化的树高,为黄山松天然林合理的经营决策提供可靠依据。更多还原

【Abstract】 Taking Pinus taiwanensis as the modeling object, the paper used site quality class as the dependent variables and stand age as the independent to constructe site class index mode. According to the characteristics of dummy variables, this method was applied to estimate parameters of the Shuffled frog leaping algorithm.Through the plots of the measured data showed that the site class index model could be used for site quality evaluation of natural Pinus taiwanensis forest. The paper simulated tree height with the change of age in different site index. The results provided a reliable basis for reasonable business decisions of natural Pinus taiwanensis forest.更多还原