Fitting and evaluation of height-diameter models for Alnus japonica in La Trinidad, Benguet, Philippines  

作　　者：Kamae P.ANACIOCO Judy Ann L.GORIO Mary Relia S.PADSICO Roscinto Ian C.LUMBRES Nova D.DOYOG Young Jin LEE 

机构地区：[1]College of Forestry, Benguet State University [2]Department of Forest Resources, College of Industrial Science, Kongju National University

出　　处：《Journal of Mountain Science》2018年第11期2422-2432,共11页山地科学学报（英文）

基　　金：support of the Forest Science and Technology Projects [Project Nos. 2013069D10-1819-AA03 and 2014068E10-1819-AA03] provided by the Korea Forest Service

摘　　要：The study was conducted to develop height-diameter at breast height(HT-DBH) models for Alnus japonica in La Trinidad, Benguet,Philippines and evaluate their predictive capability.The six widely used nonlinear growth models that were selected in this study were the ChapmanRichards, Schnute, Modified logistic, Korf/Lundqvist,Weibull and Exponential. A total of 208 Alnus japonica trees were measured using standard diameter tape for DBH(1.3 m above the ground) and Vertex and transponder was used for the total height measurement. The performance of the developed models were evaluated using the fit statistics including coefficient of determination(R^2), root mean square error(RMSE), mean bias(ē), absolute mean difference(AMD), and Akaike Information Criterion(AIC). The lack-of-fit statistics was also performed for further evaluation of the performance of the models.Based on the evaluation criteria, all six models were able to determine the DBH-height relationships and fitted the data well. Using the rank analysis, the Weibull HT-DBH model had the best performance among the six commonly used nonlinear growth models. The results of this study will help forest managers especially in La Trinidad, Benguet to easily predict the total height using the Weibull model for Alnus japonica utilizing the DBH as the predicting variable.

关 键 词：Height- DBH model Alnus japonica Rank analysis La Trinidad Benguet Philippines 

分 类 号：S758[农业科学—森林经理学]