Stem biomass modeling of Cinnamomum Iners and Roystonea Regia

Nigel Jonney J. Bokukop (2007) Stem biomass modeling of Cinnamomum Iners and Roystonea Regia. Universiti Malaysia Sabah. (Unpublished)


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In this research, a simple model for obtaining stem volume is developed for both tree species of Cinnamomum Iners and Roystonea Regia, based on two different types of volumetric equations, which are Newton's and Huber's formula. Variables that are taken into considerations in collecting the data are height of stem or trunk, height of tree, diameter at breast height, diameter at middle and diameter at top of the stem before the crown. Correlation test was done to screen as well select the possible variables including the interactions. Thereafter, curve estimation test was also done to get the model of best fit for linear, quadratic, cubic and logarithmic transformation. Finally, an eight criteria model selection process was done to get the best model. The best model for both equations for both species found to be in the form of multiple regressions.

Item Type: Academic Exercise
Uncontrolled Keywords: stem volume, Cinnamomum Iners, Roystonea Regia, volumetric equations, Newton's formula, Huber's formula, Correlation test
Subjects: Q Science > QA Mathematics
Divisions: SCHOOL > School of Science and Technology
Date Deposited: 03 Apr 2014 06:37
Last Modified: 13 Oct 2017 09:04

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