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Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah.

This study was carried out to determine the appropriate growth model for Swietenia macrophylla plantation at Luang Manis, Kolapis, Sabah. It included exploratory data analysis, development of survival and growth prediction models, basal area estimation and model comparison to determine the most appr...

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Main Authors: Abd. Kudus, Kamziah, Zainor, Zulfadhli, Chia, Fui Ree, Lapongan, Jaffirin, Pang, K. N. K.
Format: Article
Language:English
Published: Forest Research Institute Malaysia 2011
Online Access:http://psasir.upm.edu.my/id/eprint/23986/
http://www.frim.gov.my/‎
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spelling my.upm.eprints.239862014-09-19T07:07:02Z http://psasir.upm.edu.my/id/eprint/23986/ Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah. Abd. Kudus, Kamziah Zainor, Zulfadhli Chia, Fui Ree Lapongan, Jaffirin Pang, K. N. K. This study was carried out to determine the appropriate growth model for Swietenia macrophylla plantation at Luang Manis, Kolapis, Sabah. It included exploratory data analysis, development of survival and growth prediction models, basal area estimation and model comparison to determine the most appropriate model to predict the optimum age for harvesting. The growth prediction models were evaluated using Proc Reg and Proc Nlin in SAS and Kaplan Meier estimation was adapted for survival estimation. The models were compared on the basis of bias, root mean square error (RMSE) and coefficient of determination (R2). The results were supported by the findings from the basal area prediction. Results showed that the most suitable diameter prediction models were; lnD̂=3.49-(5.45/A) with RMSE (0.40), bias (1.43) and R2 (0.56) and lnD̂=0.97+0.73 lnA with RMSE (0.40), bias (1.45) and R2 (0.55). While the recommended height prediction model was lnĤ=1.00+0.12D-0.0016D2 with RMSE (0.22), bias (-2.01) and R2 (0.86). The growth prediction models recommended that the optimum age that give maximum yield per hectare is at 25 years. Forest Research Institute Malaysia 2011 Article PeerReviewed Abd. Kudus, Kamziah and Zainor, Zulfadhli and Chia, Fui Ree and Lapongan, Jaffirin and Pang, K. N. K. (2011) Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah. Malaysian Forester, 74 (1). pp. 69-78. ISSN 0302-2935 http://www.frim.gov.my/‎ English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description This study was carried out to determine the appropriate growth model for Swietenia macrophylla plantation at Luang Manis, Kolapis, Sabah. It included exploratory data analysis, development of survival and growth prediction models, basal area estimation and model comparison to determine the most appropriate model to predict the optimum age for harvesting. The growth prediction models were evaluated using Proc Reg and Proc Nlin in SAS and Kaplan Meier estimation was adapted for survival estimation. The models were compared on the basis of bias, root mean square error (RMSE) and coefficient of determination (R2). The results were supported by the findings from the basal area prediction. Results showed that the most suitable diameter prediction models were; lnD̂=3.49-(5.45/A) with RMSE (0.40), bias (1.43) and R2 (0.56) and lnD̂=0.97+0.73 lnA with RMSE (0.40), bias (1.45) and R2 (0.55). While the recommended height prediction model was lnĤ=1.00+0.12D-0.0016D2 with RMSE (0.22), bias (-2.01) and R2 (0.86). The growth prediction models recommended that the optimum age that give maximum yield per hectare is at 25 years.
format Article
author Abd. Kudus, Kamziah
Zainor, Zulfadhli
Chia, Fui Ree
Lapongan, Jaffirin
Pang, K. N. K.
spellingShingle Abd. Kudus, Kamziah
Zainor, Zulfadhli
Chia, Fui Ree
Lapongan, Jaffirin
Pang, K. N. K.
Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah.
author_facet Abd. Kudus, Kamziah
Zainor, Zulfadhli
Chia, Fui Ree
Lapongan, Jaffirin
Pang, K. N. K.
author_sort Abd. Kudus, Kamziah
title Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah.
title_short Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah.
title_full Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah.
title_fullStr Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah.
title_full_unstemmed Modelling survival and growth prediction of Swietenia macrophylla king (mahogany) plantation at Kolapis, Sabah.
title_sort modelling survival and growth prediction of swietenia macrophylla king (mahogany) plantation at kolapis, sabah.
publisher Forest Research Institute Malaysia
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/23986/
http://www.frim.gov.my/‎
_version_ 1643828225428684800
score 13.211869

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