A Comparative study of log volume estimation by using statistical method

  • Sharifah Sakinah Syed Ahmad Department of Intelligent Computing and Analytics, Faculty of Information and Communication Technology, Technical University of Malaysia, Durian Tunggal, Melaka, Malaysia
  • Siti Hajar Mohd Mushar Department of Intelligent Computing and Analytics, Faculty of Information and Communication Technology, Technical University of Malaysia, Durian Tunggal, Melaka, Malaysia
  • Nur Hajar Zamah Shari Forestry and Environment Division, Forest Research Institute Malaysia, Kepong, Malaysia
  • Fauziah Kasmin Department of Intelligent Computing and Analytics, Faculty of Information and Communication Technology, Technical University of Malaysia, Durian Tunggal, Melaka, Malaysia
Keywords: Empirical formula, tree stem volume, volume table, review

Abstract

Log volume estimation is a measurement of the amount of merchantable volume and precise estimation of log volume plays an important role in sustainable forest management. There are several log volume formula which commonly used in estimating the log volume, however, there are significant differences between each formula. Therefore, this paper evaluates the performance of three different log volume formula which are Smalian’s, Huber’s and Bruce’s formula against several log sectional length. The performance of each log volume formula will be evaluated in terms of the bias, precision and accuracy of the estimation. The result shows that Huber’s formula performs the best for log sectional length of 2 m, 4 m, 6 m and 8 m log sectional length. The log sectional length and prediction accuracy is inversely related whereby the shorter the log sectional length, the better the prediction accuracy is.

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Published
2020-02-03
How to Cite
Syed Ahmad, S. S., Mohd Mushar, S. H., Zamah Shari, N. H., & Kasmin, F. (2020). A Comparative study of log volume estimation by using statistical method. EDUCATUM Journal of Science, Mathematics and Technology, 7(1), 22-28. Retrieved from https://ejournal.upsi.edu.my/index.php/EJSMT/article/view/2458