FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA

Form factors and volume models are often be used in the estimation of tree volumes. However, a few studies have developed and evaluated the accuracy of form factors and volume models for estimating tree volumes of community forests. This study aimed to formulate form factors and volume models and as...

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Autores principales:	Tatang Tiryana, Lailatul Khasanah, Priyanto Priyanto, Sri Rahaju, Muhdin Muhdin
Formato:	article
Lenguaje:	EN
Publicado:	Ministry of Environment and Forestry 2021
Materias:	timber volume small-scale forests monte carlo non-destructive sampling Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/1f893ff94fac4064bf1967dc2694c1a5
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spelling	oai:doaj.org-article:1f893ff94fac4064bf1967dc2694c1a52021-11-09T13:14:44ZFORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA2355-70792406-819510.20886/ijfr.2021.8.2.199-211https://doaj.org/article/1f893ff94fac4064bf1967dc2694c1a52021-10-01T00:00:00Zhttp://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/6513https://doaj.org/toc/2355-7079https://doaj.org/toc/2406-8195Form factors and volume models are often be used in the estimation of tree volumes. However, a few studies have developed and evaluated the accuracy of form factors and volume models for estimating tree volumes of community forests. This study aimed to formulate form factors and volume models and assess their prediction accuracy for estimating tree bole volumes of mahogany at community forests in Central Java. This study used 120 sample trees with diameters of 6–38 cm to formulate artificial and absolute form factors and to develop tree bole volume models. These form factors coupled with bole height and total height were used in simple volume equations. Regression analyses were used to develop volume models using the diameter and total height as predictors. The simple volume equations and volume models' prediction accuracy was evaluated using a cross-validation dataset and independent dataset (30 sample trees). The artificial form factor (0.68 ± 0.11) of mahogany, which was higher than the absolute form factor (0.46 ± 0.09), provided accurate estimates of tree bole volumes when it was used with the bole height instead of the total height. The volume model that uses diameter and total height produced the most accurate estimates, while the volume model that uses diameter alone provided the most practical yet reliable tool for estimating tree bole volumes of mahogany. The results of this study are useful for improving community forest management.Tatang TiryanaLailatul KhasanahPriyanto PriyantoSri RahajuMuhdin MuhdinMinistry of Environment and Forestryarticletimber volumesmall-scale forestsmonte carlonon-destructive samplingForestrySD1-669.5ENIndonesian Journal of Forestry Research, Vol 8, Iss 2, Pp 199-211 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	timber volume small-scale forests monte carlo non-destructive sampling Forestry SD1-669.5
spellingShingle	timber volume small-scale forests monte carlo non-destructive sampling Forestry SD1-669.5 Tatang Tiryana Lailatul Khasanah Priyanto Priyanto Sri Rahaju Muhdin Muhdin FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA
description	Form factors and volume models are often be used in the estimation of tree volumes. However, a few studies have developed and evaluated the accuracy of form factors and volume models for estimating tree volumes of community forests. This study aimed to formulate form factors and volume models and assess their prediction accuracy for estimating tree bole volumes of mahogany at community forests in Central Java. This study used 120 sample trees with diameters of 6–38 cm to formulate artificial and absolute form factors and to develop tree bole volume models. These form factors coupled with bole height and total height were used in simple volume equations. Regression analyses were used to develop volume models using the diameter and total height as predictors. The simple volume equations and volume models' prediction accuracy was evaluated using a cross-validation dataset and independent dataset (30 sample trees). The artificial form factor (0.68 ± 0.11) of mahogany, which was higher than the absolute form factor (0.46 ± 0.09), provided accurate estimates of tree bole volumes when it was used with the bole height instead of the total height. The volume model that uses diameter and total height produced the most accurate estimates, while the volume model that uses diameter alone provided the most practical yet reliable tool for estimating tree bole volumes of mahogany. The results of this study are useful for improving community forest management.
format	article
author	Tatang Tiryana Lailatul Khasanah Priyanto Priyanto Sri Rahaju Muhdin Muhdin
author_facet	Tatang Tiryana Lailatul Khasanah Priyanto Priyanto Sri Rahaju Muhdin Muhdin
author_sort	Tatang Tiryana
title	FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA
title_short	FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA
title_full	FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA
title_fullStr	FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA
title_full_unstemmed	FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA
title_sort	form factors and volume models for estimating tree bole volume of mahogany at community forests in central java
publisher	Ministry of Environment and Forestry
publishDate	2021
url	https://doaj.org/article/1f893ff94fac4064bf1967dc2694c1a5
work_keys_str_mv	AT tatangtiryana formfactorsandvolumemodelsforestimatingtreebolevolumeofmahoganyatcommunityforestsincentraljava AT lailatulkhasanah formfactorsandvolumemodelsforestimatingtreebolevolumeofmahoganyatcommunityforestsincentraljava AT priyantopriyanto formfactorsandvolumemodelsforestimatingtreebolevolumeofmahoganyatcommunityforestsincentraljava AT srirahaju formfactorsandvolumemodelsforestimatingtreebolevolumeofmahoganyatcommunityforestsincentraljava AT muhdinmuhdin formfactorsandvolumemodelsforestimatingtreebolevolumeofmahoganyatcommunityforestsincentraljava
_version_	1718440997737725952

FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA

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