Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors
This study investigated the seasonal cambial activity in Dipterocrpus costulatus trees with different range of stem diameter at breast height (dbh). Samples from main stem of D. costulatus with dbh 15 cm and 25 cm growing in natural lowland dipterocarp rainforest of west Peninsular Malaysia were col...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Forest Research Institute Malaysia
2014
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/36694/1/Cambial%20activity%20of%20Dipterocarpus%20costulatus%20in%20relation%20to%20different%20stem%20diameters%20and%20climate%20factors.pdf |
| _version_ | 1825948891754790912 |
|---|---|
| author | Wang, Kang Han Abdul Azim, Amir Affan Sahri, Mohd Hamami |
| author_facet | Wang, Kang Han Abdul Azim, Amir Affan Sahri, Mohd Hamami |
| author_sort | Wang, Kang Han |
| collection | UPM |
| description | This study investigated the seasonal cambial activity in Dipterocrpus costulatus trees with different range of stem diameter at breast height (dbh). Samples from main stem of D. costulatus with dbh 15 cm and 25 cm growing in natural lowland dipterocarp rainforest of west Peninsular Malaysia were collected for this purpose. Collections of cambial samples were carried out in 2-month intervals from August 2010 till June 2011. Cambial activity was determined by counting the numbers of cambial and expansion zone cell layers towards the outer sapwood. A greater number of cell layers indicated greater cambial activity. Results showed that the cambium of trees with dbh 15 cm were influenced by the amount of rainfall. However, cambium of trees with dbh 25 cm showed relatively less sensitivity to rainfall. Dipterocrpus costulatus showed active and inactive phases during the observation period. Thus, this study has proven that this species did not grow continually at the same rate in natural forests. Instead it showed periods of alternate active and inactive growth. |
| first_indexed | 2024-03-06T08:36:05Z |
| format | Article |
| id | upm.eprints-36694 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:36:05Z |
| publishDate | 2014 |
| publisher | Forest Research Institute Malaysia |
| record_format | dspace |
| spelling | upm.eprints-366942016-08-22T08:25:15Z http://psasir.upm.edu.my/id/eprint/36694/ Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors Wang, Kang Han Abdul Azim, Amir Affan Sahri, Mohd Hamami This study investigated the seasonal cambial activity in Dipterocrpus costulatus trees with different range of stem diameter at breast height (dbh). Samples from main stem of D. costulatus with dbh 15 cm and 25 cm growing in natural lowland dipterocarp rainforest of west Peninsular Malaysia were collected for this purpose. Collections of cambial samples were carried out in 2-month intervals from August 2010 till June 2011. Cambial activity was determined by counting the numbers of cambial and expansion zone cell layers towards the outer sapwood. A greater number of cell layers indicated greater cambial activity. Results showed that the cambium of trees with dbh 15 cm were influenced by the amount of rainfall. However, cambium of trees with dbh 25 cm showed relatively less sensitivity to rainfall. Dipterocrpus costulatus showed active and inactive phases during the observation period. Thus, this study has proven that this species did not grow continually at the same rate in natural forests. Instead it showed periods of alternate active and inactive growth. Forest Research Institute Malaysia 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/36694/1/Cambial%20activity%20of%20Dipterocarpus%20costulatus%20in%20relation%20to%20different%20stem%20diameters%20and%20climate%20factors.pdf Wang, Kang Han and Abdul Azim, Amir Affan and Sahri, Mohd Hamami (2014) Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors. Journal of Tropical Forest Science, 26 (4). pp. 581-588. ISSN 0128-1283 https://www.frim.gov.my/publication/journal-of-tropical-forest-science-jtfs/ |
| spellingShingle | Wang, Kang Han Abdul Azim, Amir Affan Sahri, Mohd Hamami Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors |
| title | Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors |
| title_full | Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors |
| title_fullStr | Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors |
| title_full_unstemmed | Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors |
| title_short | Cambial activity of Dipterocarpus costulatus in relation to different stem diameters and climate factors |
| title_sort | cambial activity of dipterocarpus costulatus in relation to different stem diameters and climate factors |
| url | http://psasir.upm.edu.my/id/eprint/36694/1/Cambial%20activity%20of%20Dipterocarpus%20costulatus%20in%20relation%20to%20different%20stem%20diameters%20and%20climate%20factors.pdf |
| work_keys_str_mv | AT wangkanghan cambialactivityofdipterocarpuscostulatusinrelationtodifferentstemdiametersandclimatefactors AT abdulazimamiraffan cambialactivityofdipterocarpuscostulatusinrelationtodifferentstemdiametersandclimatefactors AT sahrimohdhamami cambialactivityofdipterocarpuscostulatusinrelationtodifferentstemdiametersandclimatefactors |