Use of the Pilodyn for Assessing Wood Properties in Standing Trees of Eucalyptus Clones

Shi-junXU, WU; Guang-youRISTO, Jian-minLI; Wei, Zhao-huaLI Bao-qiWANG

doi:10.5772/33200

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…The DBH was measured at 1.3 m from the root collar by using a diameter caliper. PP, an indirect parameter used to measure wood density, was assessed in various species by using a pilodyn tester (Pilodyn 6 J Forest) in accordance with previously described methods (Ishiguri et al 2008(Ishiguri et al , 2012Shi-jun et al 2010;Wu et al 2010;Hidayati et al 2013;Chen et al 2015;Fundova et al 2018). PP was measured at the DBH on two positions for each tree without removing the bark of each tree and on the same side of all trees.…”

Section: Experimental Designmentioning

confidence: 99%

Selection of dipterocarp species for enrichment planting in a secondary tropical rainforest

Widiyatno

Hidayati

Hardiwinoto

et al. 2020

Forest Science and Technology

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The selection of species for enrichment planting that involves native species in a secondary lowland dipterocarps forest as one of the tropical rainforest types should be conducted to maintain the sustainable management of tropical rainforests. The research of species trial of dipterocarp species was planted under a randomized complete block design with four replications. The following parameters were examined: survival rate, diameter breast height (DBH), pilodyn penetration (PP), and stress wave velocity (SWV). The survival rate (F ¼ 1.72; p ¼ 0.047), DBH (F ¼ 6.67, p < 0.0001), and pilodyn penetration (F ¼ 14.19; p < 0.001) significantly differed at 12.5 years after planting. The survival rate of Shorea leprosula was the highest (85%) of all the species, and the survival rate of other species, namely, S. macrophylla, S. ovalis, S. johorensis, S. scaberima, and S. parvifolia, was more than 70%. The best growth of DBH parameter was observed in S. platyclados. The DBH growth of S. platyclados 12.5 years after planting were 27.62 cm (mean annual diameter increment [MADI] ¼ 2.2 cm/year). The species whose growth in DBH was similar to those of S. platyclados were S. leprosula, S. parvivolia, and S. ovalis. However, stress wave velocity (SWV) was not significantly different among dipterocarp species (F ¼ 1.26; p ¼ 0.234). Pilodyn penetration (PP) was significantly correlated with DBH (Pearson's correlations ¼ 0.306; p < 0.001), whereas stress wave velocity was not significantly correlated with DBH and PP (p > 0.05), and their Pearson's correlations were 0.043 and À0.012, respectively. These results suggested that each dipterocarp species varied in terms of their growth and wood properties. Thus, choosing the species for enrichment planting in secondary tropical rainforests depends on the characteristics of each species and the desired final product of forest management.

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Section: Experimental Designmentioning

confidence: 99%

Selection of dipterocarp species for enrichment planting in a secondary tropical rainforest

Widiyatno

Hidayati

Hardiwinoto

et al. 2020

Forest Science and Technology

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The Ancient Timber Roofing Structures in Emilia-Romagna Region

Marzo

Marghella

Indirli

2013

AMR

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Widespread survey, aiming at the evaluation of both vulnerability of the structures and usability of the buildings, have been carried out after the seismic events occurred on May 2012 in Emilia-Romagna districts. During the surveys, several cover typologies have been verified, which often evidenced lack in terms of earthquake-proof features. In contrast, some ancient timber roofs showed an original construction technology, according to the seismic mitigation measures. Clearly, the attention to the behaviour of the covering structures against the horizontal actions was due to the historic memory related to earthquakes occurred in the past or simply due to a good construction practice lost during the following years.This paper it is devoted to explain the analysis campaign carried out on an ancient timber covering structure located in the historic centre of the town of Cento (FE), aiming at the characterisation of its seismic behaviour. The study consists on three subsequent steps: 1) in-depth visual and geometrical survey; 2) in-situ non-destructive tests for material characterization; 3) Finite Element modelling of the complex structure.

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Use of the Pilodyn for Assessing Wood Properties in Standing Trees of Eucalyptus Clones

Cited by 2 publications

References 6 publications

Selection of dipterocarp species for enrichment planting in a secondary tropical rainforest

Selection of dipterocarp species for enrichment planting in a secondary tropical rainforest

The Ancient Timber Roofing Structures in Emilia-Romagna Region

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