Non-destructive modeling using a drilling resistance tool to predict wood basic density of standing trees in a eucalypts plantation in North Sumatra, Indonesia

Abstract

Abstract. Singh KP, Siregar IZ, Abad JIM, Karlinasari L. 2022. Non-destructive modeling using a drilling resistance tool to predict wood basic density of standing trees in a eucalypts plantation in North Sumatra, Indonesia. Biodiversitas 23: 6218-6226. Eucalypts are globally selected as the main tree species for pulp and paper industries owing to their good potential growth and wood traits. Wood basic density, which is related to wood biomass yield, is one of the most important wood traits for pulp production and has become a focus in the tree improvement program. Evaluation of this trait in the field is needed to efficiently develop tree improvement programs. The aims of this study were to determine the distribution of basic density in the vertical direction of standing trees, including Eucalyptus grandis, Eucalyptus urophylla, and E. grandis × E. urophylla hybrid (commonly called “urograndis”), and to develop a model for predicting wood basic density using micro-drilling resistance tools of ResistographÒ. The results showed that basic density traits varied within individual trees and within and between species. Average whole tree basic wood densities of 379.9 kg/m3, 400.5 kg/m3, and 440.6 kg/m3 were found for E. grandis, hybrid urograndis, and E. urophylla at 44 months old, respectively. The model developed had a good correlation for predicting wood basic density at 1.3 m height and whole tree basic density, with the R2 for model calibration ranging from 0.52 to 0.76 for 1.3 m wood basic density prediction and from 0.62 to 0.79 for whole tree wood basic density. This study found that the three species of eucalyptus could be used to create a combined model for predicting wood basic density that could be used for each individual species. The model for single and multiple species had a good validation with R2 from 0.51 to 0.72.

Predicting Wood Density Using Resistance Drilling: The Effect of Instrument and Operator

“…The relationship between amplitude and basic density was not linear, in contrast to previous reports [6,14,15,38]. This is probably attributable to the greater range of basic density sampled in this study compared to previous studies (range 383.4 to 755.5 kg/m 3 ).…”

Predicting Wood Density Using Resistance Drilling: The Effect of Varying Feed Speed and RPM

“…There are an increasing number of studies in the scientific literature utilising the drilling resistance for wood density assessment, predominantly in tree breeding [12][13][14]. Studies have also used the approach to explore longitudinal and radial variation in wood properties within the tree [15][16][17] and silvicultural and environment effects on wood properties [15,18,19]. Work in both softwoods and hardwoods has demonstrated that drilling resistance data correlates strongly at the individual sample level with basic density [8,16,20,21].…”

“…Studies have also used the approach to explore longitudinal and radial variation in wood properties within the tree [15][16][17] and silvicultural and environment effects on wood properties [15,18,19]. Work in both softwoods and hardwoods has demonstrated that drilling resistance data correlates strongly at the individual sample level with basic density [8,16,20,21].…”

Electrical Properties at Multi Frequencies for Analysis of Physical and Anatomical Properties of Fast-Growing Standing Teak Trees at Various Ages

“…Some studies revealed the existence of electrical properties potentials in trees that could be related to physiological processes in trees [15,16]. The tree electrical properties approach is also used to determine the quality of trees for sawlogs and breeding programs [17][18][19][20]. Quality prediction through the electrical potential approach in wood has been done in several studies on small wood samples [21][22][23].…”