【摘要】 为编制黄山松密控图(SDMD,林分密度控制图)和可变密度收获表,并解决密控图与可变密度收获表不兼容的问题,研究以密度效应模型为基础模型,通过建立等树高线、等直径线等模型绘制黄山松密控图,并结合地位指数模型导出黄山松可变密度收获表。结果表明,建立的黄山松等树高线和等直径线的相对误差在10.0%范围内,拟合效果较好,可用于编制黄山松密控图。利用混合蛙跳算法估算了以立地质量等级为哑变量的黄山松地位指数模型,结合等树高线和等直径线,编制了立地质量等级为肥沃、地位指数为16 m、密度指数为1 400株/hm~2的黄山松可变密度收获表。更多还原

【Abstract】 In order to draw up the stand density control diagram(SDMD) and variable density harvesting table of Pinus taiwanensis,and solve the problem of incompatibility between stand density control diagram and variable density harvesting table,the density effect model was used as the basic model to draw the stand density control diagram of Pinus taiwanensis by equivalent height curve and equivalent diameter curve models,and the variable density harvesting table of Pinus taiwanensis was derived based on the site index model.The results showed that the relative errors of equivalent height curve and equivalent diameter curve of Pinus taiwanensis were in the range of10.0%,and the effect was good,which could be used to draw up the stand density control diagram of Pinus taiwanensis.The site index model of Pinus taiwanensis was estimated by using the mixed leapfrog algorithm,and the variable density harvest table of Pinus taiwanensis with the site quality grade of fertility,site index of 16 m and density index of 1 400 plants/hm2 was compiled by combining the equivalent height curve and equivalent diameter curve.更多还原