干旱区生态环境知识资源中心(Arid): Influences of determined and estimated dendrometric variables on the precision of volumetric modelling

Arid

DOI	10.17221/105/2021-JFS
	Influences of determined and estimated dendrometric variables on the precision of volumetric modelling
	da Silva, Jose Antonio Aleixo; Ferreira, Rinaldo LuIz Caraciolo
通讯作者	da Silva, JAA (corresponding author)，Univ Fed Rural Pernambuco, Dept Ciencia Florestal, Recife, PE, Brazil.
来源期刊	JOURNAL OF FOREST SCIENCE
ISSN	1212-4834
EISSN	1805-935X
出版年	2021
卷号	67 期号:12
英文摘要	The use of independent variables in volumetric modelling is an important step in fitting models to represent tree or stand characteristics. The DBH measured at 1.3 m from the ground level and total tree height (Ht) are the most commonly used independent variables when modelling individual tree volumes. This work aimed to analyze the importance of independent variables in fitting and selecting volumetric equations. A total of 750 trees from an experiment with three Eucalyptus spp. clones planted in five spacings in the semi-arid region of Pernambuco were used. Four statistical procedures were applied to compare the equations: Adjusted Fit Index (AFI), Akaike information criterion (AIC), mean absolute percentage error (MAPE), and a completely random design having the real tree volume as control and the fit equations as treatments. The error measuring heights in the field (EH) was also analyzed. Four heights were evaluated: Ht, height estimated in the field (He) and heights adjusted (Ha) from hypsometric relationships using the DBH [Ha (a)] and D-1.7 [Ha (b)], which was the diameter most correlated with the volume. The result indicates that all 18 fitted models provided high precision volumetric equations which do not differ at the 5% significance level.
英文关键词	estimated height adjusted height hypsometric relationships tree volume
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000736925500002
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376171
作者单位	[da Silva, Jose Antonio Aleixo; Ferreira, Rinaldo LuIz Caraciolo] Univ Fed Rural Pernambuco, Dept Ciencia Florestal, Recife, PE, Brazil
推荐引用方式 GB/T 7714	da Silva, Jose Antonio Aleixo,Ferreira, Rinaldo LuIz Caraciolo. Influences of determined and estimated dendrometric variables on the precision of volumetric modelling[J],2021,67(12).
APA	da Silva, Jose Antonio Aleixo,&Ferreira, Rinaldo LuIz Caraciolo.(2021).Influences of determined and estimated dendrometric variables on the precision of volumetric modelling.JOURNAL OF FOREST SCIENCE,67(12).
MLA	da Silva, Jose Antonio Aleixo,et al."Influences of determined and estimated dendrometric variables on the precision of volumetric modelling".JOURNAL OF FOREST SCIENCE 67.12(2021).