Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia
The aim of this study is to obtain the basic wood properties of planted Borneo ironwood (Eusideroxylon zwageri) from a plantation established about 80 years ago. Stem diameter at 1.3 m above the ground, tree height, and stress-wave velocity (SWV) of stem were measured on 36 planted E. zwageri trees...
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Japan Society of Tropical Ecology
2020
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my.unimas.ir.297692023-08-03T02:13:28Z http://ir.unimas.my/id/eprint/29769/ Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia Aiso-Sanada, Haruna Nezu, Ikumi Ishiguri, Futoshi Aina Nadia Najwa, Mohamad Jaffar Douglas Bungan, Ambun Mugunthan, A/L Perumal Mohd Effendi, Wasli Ohkubo, Tatsuhiro Abe, Hisashi SD Forestry The aim of this study is to obtain the basic wood properties of planted Borneo ironwood (Eusideroxylon zwageri) from a plantation established about 80 years ago. Stem diameter at 1.3 m above the ground, tree height, and stress-wave velocity (SWV) of stem were measured on 36 planted E. zwageri trees. Later, core samples were collected from four trees whose measurements represented the average stem diameter of all the measured trees. Using the core samples, the moisture content (MC), basic density (BD), and compressive strength parallel to grain (CS) were measured. Dynamic Youngʼs modulus for longitudinal direction at green condition (E) was also calculated from SWV. There was no significant relationship between growth characteristics and SWV. Mean values of MC, BD, CS, and E were 37.2 %, 0.86 g/cm3 , 64.3 MPa, and 18.47 GPa, respectively. Significant differences among individual trees were found in MC, BD, and CS. In addition, radial variations were almost constant from bark side to pith side. The results indicate that longitudinal E is independent from growth characteristics, and that the E. zwageri wood tested in this study has uniform BD and CS in the radial direction. Japan Society of Tropical Ecology 2020 Article PeerReviewed text en http://ir.unimas.my/id/eprint/29769/1/Aiso-Sanada%2C%20Haruna.pdf Aiso-Sanada, Haruna and Nezu, Ikumi and Ishiguri, Futoshi and Aina Nadia Najwa, Mohamad Jaffar and Douglas Bungan, Ambun and Mugunthan, A/L Perumal and Mohd Effendi, Wasli and Ohkubo, Tatsuhiro and Abe, Hisashi (2020) Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia. TROPICS, 28 (4). pp. 99-103. ISSN 0917-415X https://www.jstage.jst.go.jp/browse/tropics DOI:10.3759/tropics.MS19-10 |
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SD Forestry Aiso-Sanada, Haruna Nezu, Ikumi Ishiguri, Futoshi Aina Nadia Najwa, Mohamad Jaffar Douglas Bungan, Ambun Mugunthan, A/L Perumal Mohd Effendi, Wasli Ohkubo, Tatsuhiro Abe, Hisashi Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia |
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The aim of this study is to obtain the basic wood properties of planted Borneo ironwood (Eusideroxylon
zwageri) from a plantation established about 80 years ago. Stem diameter at 1.3 m above the ground, tree height, and stress-wave velocity (SWV) of stem were measured on 36 planted E. zwageri trees. Later, core samples were collected from four trees whose
measurements represented the average stem diameter of all the measured trees. Using the core samples, the moisture content (MC), basic density (BD), and compressive strength parallel to grain (CS) were measured. Dynamic Youngʼs modulus for longitudinal direction at green condition (E) was also calculated from SWV. There was no significant relationship between growth characteristics
and SWV. Mean values of MC, BD, CS, and E were 37.2 %, 0.86 g/cm3 , 64.3 MPa, and 18.47 GPa, respectively. Significant differences among individual trees were found in MC, BD, and CS. In addition, radial variations were almost constant from bark side to pith side. The results indicate that longitudinal E is independent from growth characteristics, and that the E. zwageri wood tested in this study has uniform BD and CS in the radial direction. |
format |
Article |
author |
Aiso-Sanada, Haruna Nezu, Ikumi Ishiguri, Futoshi Aina Nadia Najwa, Mohamad Jaffar Douglas Bungan, Ambun Mugunthan, A/L Perumal Mohd Effendi, Wasli Ohkubo, Tatsuhiro Abe, Hisashi |
author_facet |
Aiso-Sanada, Haruna Nezu, Ikumi Ishiguri, Futoshi Aina Nadia Najwa, Mohamad Jaffar Douglas Bungan, Ambun Mugunthan, A/L Perumal Mohd Effendi, Wasli Ohkubo, Tatsuhiro Abe, Hisashi |
author_sort |
Aiso-Sanada, Haruna |
title |
Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia |
title_short |
Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia |
title_full |
Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia |
title_fullStr |
Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia |
title_full_unstemmed |
Basic wood properties of Borneo ironwood (Eusideroxylon zwageri) planted in Sarawak, Malaysia |
title_sort |
basic wood properties of borneo ironwood (eusideroxylon zwageri) planted in sarawak, malaysia |
publisher |
Japan Society of Tropical Ecology |
publishDate |
2020 |
url |
http://ir.unimas.my/id/eprint/29769/1/Aiso-Sanada%2C%20Haruna.pdf http://ir.unimas.my/id/eprint/29769/ https://www.jstage.jst.go.jp/browse/tropics |
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