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《Journal of Fujian Forestry Science and Technology》 2018-02
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Comparison and Selection of the Basal Tree Models for Optimum Tree Height Curve of Schima superb

LIN Huazhong;National Forest Farm of Jiangle;  
Determining the optimal tree height curve model of Schima superba is very important for the field investigation of Schima superba,forecasting and evaluating Schima superba resources.Based on the standard survey data of Schima superba forest of different age and different forest sites in Jiangle county of Fujian,the tree height estimation model of Schima superba was fitted by using twoparameter and three-parameter nonlinear models.The comparative analysis and selection optimal tree height estimation model.The results show that the 2-parameter tree height curve model of H=1.3+a×exp(-b/D) of Schumacher(1939) and the H=1.3+exp(a+b×Dc) 3-parameter of Curtis(1967) The fitting precision of tree height curve model is the highest.The fitting accuracy of 2 parameter and all 3-parameter are not obvious.If traditional nonlinear model,artificial neural network and nonlinear mixed effects model are used to compare the fitting precision of tree height Curve,a 2-parameter Schumacher(1939) model can be fitted.
【CateGory Index】: S792.99
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