辽宁本溪地区日本落叶松人工林生长模型研究

Study on Growth Model of Larix kaempferi plantation in Benxi Area of Liaoning Province

以太子河林场日本落叶松人工林为研究对象,采用Logistic、Richards、Gompertz、Mitscherlich、Schumacher、修正Weibull等6种理论生长方程,建立日本落叶松人工林树高、胸径、材积的生长模型。结果表明:日本落叶松胸径生长拟合方程为D=76. 084-77. 406exp(-0. 016A),树高生长拟合方程为H=25. 663exp[31. 488exp(-0. 088A)],材积生长拟合方程V=317. 355[1-exp(-0. 002A)^(2. 262),各方程拟合效果均显著。使用未进行建模的19株日本落叶松解析木对所建立的预测模型进行t检验,模型预测值与实测值之间无显著差异(P> 0. 05),能够较好地预测林分的生长动态变化过程。

The Larix kaempferi plantation in Taizihe Forest Farm was used as the research object.The growth models of tree height,DBH and volume of Larix kaempferi plantations were established by using six theoretical growth equations,such as Logistic,Richards,Gompertz,Mitscherlich,Schumacher and Modified Weibull.The results show that the fitting equation of the DBH growth of Larix kaempferi is D =76.084-77.406exp(-0.016 A ),and the tree height growth fitting equation is H =25.663exp[31.488exp(-0.088 A )],the volume growth fitting equation V =317.355[1-exp(-0.002 A )] 2.262,the fitting effect of each equation is significant.T test was carried out on the predicted models of 19 Larix kaempferi without modeling.There is no significant difference between the predicted values and the measured values ( p>0.05),which can predict the growth dynamics of the stands well.