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	Improving the accuracy of the height-diameter equation using the classified factors method
	Wang Y. F.; Yue, T. X.; Du, Z. P.; Zhao, M. W.
	2015
关键词	Height-diameter model Topographic factor Picea crassifolia Height classification Site Chapman-Richards equation pinus-banksiana picea-mariana black spruce douglas-fir models growth forests ontario parameters china
英文摘要	The height-diameter relationship model is crucial in the estimation of forest stand volume, biomass and carbon storage, etc. To improve prediction accuracy, the classified factors method for height-diameter relationship modeling was developed based on the classified height method. The data set contained 959 tree samples obtained from 28 plots measured by topographic factors (aspect, slope position and altitude). The Chapman-Richards equation was used to build models. Classification methods have improved fitting performance and prediction accuracy compared to the classical method. The classified height method has the best fitting performance because it has the highest determination coefficient (R (2) = 0.927) and the lowest root mean square error (RMSE = 1.548), whereas the classified factors method has the highest prediction accuracy because it has the lowest mean absolute error (MAE = 1.137) and mean relative error (MRE = 0.109).
出处	Environmental Earth Sciences
卷	74
期	8
页	6471-6480
收录类别	SCI
语种	英语
ISSN号	1866-6280
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38916]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang Y. F.,Yue, T. X.,Du, Z. P.,et al. Improving the accuracy of the height-diameter equation using the classified factors method. 2015.

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