An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae)
Tree risk assessment is important when communities choose to cultivate trees near people and property, and many tools may be used to enhance these assessments. The effectiveness of determining internal tree stem condition by measuring trunk surface temperatures with infrared cameras was assessed in...
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| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/106202 http://hdl.handle.net/10220/26362 http://joa.isa-arbor.com/articles.asp?JournalID=1&VolumeID=38&IssueID=6 |
| _version_ | 1811695515989966848 |
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| author | Leong, Eng-Choon Fong, Yok-King Tan, Puay-Yok Burcham, Daniel C. |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Leong, Eng-Choon Fong, Yok-King Tan, Puay-Yok Burcham, Daniel C. |
| author_sort | Leong, Eng-Choon |
| collection | NTU |
| description | Tree risk assessment is important when communities choose to cultivate trees near people and property, and many tools may be used to enhance these assessments. The effectiveness of determining internal tree stem condition by measuring trunk surface temperatures with infrared cameras was assessed in this study. The trunk surface temperature of 48 Casuarina equisetifolia was evaluated; the trees were felled and dissected to quantify internal stem defects; and a mixed-methods approach was employed to determine the presence of defects. In total, 27% of trees were decayed, 62% discolored, 6% cavitated by termite infestations, and 2% undamaged. Qualitative visual evaluation of the infrared images revealed the close association of external stem features, opposed to internal defects, with surface temperature distributions. External features, such as cankers, detached bark, and mechanical damage, were associated with temperature anomalies. The trees’ internal condition accounted for a small percentage of the variability in evaluated temperature measurements (r2 = 0.001-0.096). Overall, no clear relationship was found between the extent of internal defects and surface temperature distributions. These results are practically important for the arboricultural professional community because they show the technique does not provide accurate results about the internal condition of trees. |
| first_indexed | 2024-10-01T07:24:42Z |
| format | Journal Article |
| id | ntu-10356/106202 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:24:42Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1062022019-12-06T22:06:20Z An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae) Leong, Eng-Choon Fong, Yok-King Tan, Puay-Yok Burcham, Daniel C. School of Civil and Environmental Engineering DRNTU::Science::Biological sciences::Botany::Plant physiology Tree risk assessment is important when communities choose to cultivate trees near people and property, and many tools may be used to enhance these assessments. The effectiveness of determining internal tree stem condition by measuring trunk surface temperatures with infrared cameras was assessed in this study. The trunk surface temperature of 48 Casuarina equisetifolia was evaluated; the trees were felled and dissected to quantify internal stem defects; and a mixed-methods approach was employed to determine the presence of defects. In total, 27% of trees were decayed, 62% discolored, 6% cavitated by termite infestations, and 2% undamaged. Qualitative visual evaluation of the infrared images revealed the close association of external stem features, opposed to internal defects, with surface temperature distributions. External features, such as cankers, detached bark, and mechanical damage, were associated with temperature anomalies. The trees’ internal condition accounted for a small percentage of the variability in evaluated temperature measurements (r2 = 0.001-0.096). Overall, no clear relationship was found between the extent of internal defects and surface temperature distributions. These results are practically important for the arboricultural professional community because they show the technique does not provide accurate results about the internal condition of trees. Published version 2015-07-09T04:26:33Z 2019-12-06T22:06:20Z 2015-07-09T04:26:33Z 2019-12-06T22:06:20Z 2012 2012 Journal Article Burcham, D. C., Leong, E.-C., Fong, Y.-K., & Tan, P.-Y. (2012). An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae). Arboriculture and Urban Forestry, 38(6), 277-286. https://hdl.handle.net/10356/106202 http://hdl.handle.net/10220/26362 http://joa.isa-arbor.com/articles.asp?JournalID=1&VolumeID=38&IssueID=6 en Arboriculture & Urban Forestry © 2012 International Society of Arboriculture. This paper was published in Arboriculture and Urban Forestry and is made available as an electronic reprint (preprint) with permission of International Society of Arboriculture. The published version is available at: [http://joa.isa-arbor.com/articles.asp?JournalID=1&VolumeID=38&IssueID=6]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | DRNTU::Science::Biological sciences::Botany::Plant physiology Leong, Eng-Choon Fong, Yok-King Tan, Puay-Yok Burcham, Daniel C. An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae) |
| title | An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae) |
| title_full | An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae) |
| title_fullStr | An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae) |
| title_full_unstemmed | An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae) |
| title_short | An evaluation of internal defects and their effect on trunk surface temperature in Casuarina equisetifolia L. (Casuarinaceae) |
| title_sort | evaluation of internal defects and their effect on trunk surface temperature in casuarina equisetifolia l casuarinaceae |
| topic | DRNTU::Science::Biological sciences::Botany::Plant physiology |
| url | https://hdl.handle.net/10356/106202 http://hdl.handle.net/10220/26362 http://joa.isa-arbor.com/articles.asp?JournalID=1&VolumeID=38&IssueID=6 |
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