FAKTOR KONVERSI VOLUME TERHADAP BERAT GAMAL (Gliricidia sepium) BERDASARKAN UMUR TEGAKAN DI SUKABUMI, JAWA BARAT

Volume To Weight Conversion Factors Of Gamal (Gliricidia sepium) Based On Stand Age In Sukabumi, West Java

Authors

  • Muhdin Department of Forest Management, Faculty of Forestry and Environment, IPB University
  • Arhan Trirahido Alumnus Departemen Manajemen Hutan, Fakultas Kehutanan dan Lingkungan, IPB
  • Tatang Tiryana Department of Forest Management, Faculty of Forestry and Environment, IPB University https://orcid.org/0000-0002-8430-7311
  • Muhammad Buce Saleh

Keywords:

conversion factor, stand age, gamal, stacked-wood, staple meter

Abstract

The conversion factor from stacked wood volume to weight is a widely used method for estimating the biomass of energy plantation forests. However, the general conversion factor for gamal (Gliricidia sepium) established by the Indonesian government does not account for variations in stand age. This study aims to determine age-specific conversion factors for gamal and evaluate the differences in these factors across various stand ages. Field data collection was carried out in a gamal plantation comprising three stand ages—3, 4, and 5 years—located in the Sukabumi Forest Management Unit, West Java. In each stand age, ten gamal trees were felled and grouped based on the similarity in the number of branches to obtain stacked wood samples. A total of 12 stacked wood samples from 30 felled trees were collected across the three stand ages, with their stacked volumes and fresh weights measured to determine conversion factors. The differences in these conversion factors were assessed using the Kruskal-Wallis test. The results indicated conversion factors of 0.286, 0.369, and 0.444 for gamal trees aged 3, 4, and 5 years, respectively. This study confirms that gamal conversion factors differ significantly among stand ages, suggesting the use of age-specific conversion factors would provide accurate estimates of the fresh weight of gamal plantations.

Keywords: conversion factor, stand age, gamal, stacked-wood, staple meter

Downloads

Published

2025-06-25

Issue

Vol. 2 No. 1 (2025): Juni 2025

Section

Articles

License

Penulis yang menerbitkan jurnal ini menyetujui ketentuan berikut:
Penulis memegang hak cipta dan memberikan hak publikasi pertama kepada jurnal dengan karya tersebut secara bersamaan dilisensikan di bawah Lisensi Atribusi Creative Commons yang memungkinkan orang lain untuk berbagi karya dengan pengakuan atas kepenulisan karya dan publikasi awal di jurnal ini. Penulis dapat mengadakan perjanjian kontrak tambahan yang terpisah untuk distribusi non-eksklusif dari versi terbitan jurnal (misalnya, mempostingnya ke repositori institusi atau menerbitkannya dalam buku), dengan pengakuan atas publikasi awalnya pada tahun jurnal ini. Penulis diizinkan dan didorong untuk memposting karya mereka secara online (misalnya, di repositori institusi atau di situs web mereka) sebelum dan selama proses penyerahan, karena hal ini dapat mengarah pada pertukaran yang produktif, serta kutipan karya yang diterbitkan lebih awal dan lebih banyak (Lihat Pengaruh Open Access)
 
 

How to Cite

FAKTOR KONVERSI VOLUME TERHADAP BERAT GAMAL (Gliricidia sepium) BERDASARKAN UMUR TEGAKAN DI SUKABUMI, JAWA BARAT: Volume To Weight Conversion Factors Of Gamal (Gliricidia sepium) Based On Stand Age In Sukabumi, West Java. (2025). Jurnal ForestrIndo, 2(1), 229-236. https://journal.ipb.ac.id/forestrindo-journal/article/view/65125