森林工程2017，Vol.33Issue(4)：15-20,26,7.
张广才岭三大硬阔树高曲线的研究
Tree Height-diameter Model for Three Hardwood Tree Species in the Zhangguangcai Mountains
摘要
Abstract
The tree height curve can not only be used as a key indicator to calculate the volume,biomass,and carbon storage,etc.,but also be an important basis for forest survey and monitoring.In this paper,we used 9 tree height curve models based on the actual measurement data of DBH and height from 2 696 individual trees and took the three hardwoods(Fraxinus mandschurica Rupr.Juglans mandshurica Maxim.Phellodendron amurense Rupr.)of Zhangguangcai Mountains as the research object to evaluate the fitness of the model by the adjusted coefficient determination(R2a)and root mean square error(RMSE).Four "Jackknife" indexes including mean prediction error(MPE),mean prediction percent error(MPE ％),mean absolute error(MAE)and mean absolute percent error(MAE ％)were used to take the independence test of model.The results showed that model 8(Gompert equation)was better for height curve of Fraxinus mandschurica Rupr.and Phellodendron amurense Rupr,and the model 9(Schumacher equation)was better for height curve of Juglans mandshurica Maxim;the best R2a for all three hardwood was greater than 0.6 while the mean absolute error(MAE)and mean absolute percentage error(MAE ％)were small.In summary,the established height curve model fitting results was better and would be a good precision of height for three hardwood of the Zhangguangcai Mountains.关键词
树高-胸径模型/水曲柳/胡桃楸/黄菠萝/刀切法Key words
tree height-diameter model/Fraxinus mandschurica Rupr./Juglans mandshurica Maxim./Phellodendron amurense Rupr./Jackknife分类
农业科技引用本文复制引用
张树森,董利虎..张广才岭三大硬阔树高曲线的研究[J].森林工程,2017,33(4):15-20,26,7.基金项目
黑龙江省留学归国人员科学基金项目(LC2016007) （LC2016007）
