Jurnal Wasian
Vol 5, No 2 (2018): Jurnal Wasian

Development and Validation of Volume Prediction Model for Balangeran (Shorea balangeran (Korth.) Burck) In Central Kalimantan

Muhammad Abdul Qirom (Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Banjarbaru)



Article Info

Publish Date
29 Dec 2018

Abstract

Estimation model of tree volume must be high in accuracy and precisions to estimate stand potential precisely. This paper determines and validates the estimation model of Shorea balangeran volume grown in Central Kalimantan, Indonesia. There were three phases of model development which include 52 trees for model progress, 23 trees for model validation, and 10 trees for external model validation. The calculation model used linear and non-linear models with diameter, diameter and height, and diameter and height combination as independent variables. The criteria of the best model was determined by statistical analyses such as coefficient determination, relative and aggregative deviation, bias, precisions and accuracy of estimation, AIC (Akaike’s Information Criterion). The result of the study showed that the model with diameter as single variable was not complied with the selected best model criteria (aggregative deviation; AD< 1 % and relative deviation: RD< 8 %). The addition of tree height on model estimation increased the coefficient determination of 6.54% and the model with diameter and height as independent variable was satisfied with the criteria (AD and RD criteria). The best model of Balangeran was with coefficient determination of 89.77 %. However, the best model was not applicable for other sites with different stand characteristicsKeywords: volume, model, Balangeran, validation, stand, tree

Copyrights © 2018






Journal Info

Abbrev

JWAS

Publisher

Subject

Agriculture, Biological Sciences & Forestry

Description

Journal WASIAN contains scientific paper from research result or scientific review in forestry. This journal was issued periodically twice a year (June and December). Journal WASIAN was first issued at 2011 with the name INFO BPK Manado (ISSN 2252-4401), then in 2014 it changed into Journal WASIAN. ...