Non Destructive Detection of Decay in Living Trees
Larsson, Bertil LU ; Bengtsson, Bengt A LU and Gustafsson, Mats LU
(2002)
In Technical Report LUTEDX/(TEAT-7111)/1-15/(2002)
- Abstract
- It is shown that four point resistivity measurements can be used to detect
decay in living trees. A low frequency alternating current is injected into
the trunk and the induced voltage is measured between two points along the
trunk. With additional measurement of the cross section area, the effective
resistivity of the trunk is estimated. A comparison within a group of trees
shows that trees in decay have approximately a factor of two lower effective
resistivity than sound trees. The method is tested on several different groups
of spruce (Picea abies); in total more than 300 trees are examined. The tests
show that the method can detect decay caused by Heterobasidion... (More) - It is shown that four point resistivity measurements can be used to detect
decay in living trees. A low frequency alternating current is injected into
the trunk and the induced voltage is measured between two points along the
trunk. With additional measurement of the cross section area, the effective
resistivity of the trunk is estimated. A comparison within a group of trees
shows that trees in decay have approximately a factor of two lower effective
resistivity than sound trees. The method is tested on several different groups
of spruce (Picea abies); in total more than 300 trees are examined. The tests
show that the method can detect decay caused by Heterobasidion annosum
with high accuracy. Finite element modeling and simulations are used to
validate the method. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/530531
- author
- Larsson, Bertil
LU
; Bengtsson, Bengt A
LU
and Gustafsson, Mats
LU
- organization
- publishing date
- 2002
- type
- Book/Report
- publication status
- published
- subject
- in
- Technical Report LUTEDX/(TEAT-7111)/1-15/(2002)
- pages
- 15 pages
- publisher
- [Publisher information missing]
- report number
- TEAT-7111
- language
- English
- LU publication?
- yes
- additional info
- Published version: Tree Physiology, Vol. 24, No. 7, pp. 853-58, 2004.
- id
- c289154f-c956-4bc0-8ffe-0edbbbf398c3 (old id 530531)
- date added to LUP
- 2016-04-04 13:08:11
- date last changed
- 2018-11-21 21:12:23
@techreport{c289154f-c956-4bc0-8ffe-0edbbbf398c3,
abstract = {{It is shown that four point resistivity measurements can be used to detect<br/><br>
decay in living trees. A low frequency alternating current is injected into<br/><br>
the trunk and the induced voltage is measured between two points along the<br/><br>
trunk. With additional measurement of the cross section area, the effective<br/><br>
resistivity of the trunk is estimated. A comparison within a group of trees<br/><br>
shows that trees in decay have approximately a factor of two lower effective<br/><br>
resistivity than sound trees. The method is tested on several different groups<br/><br>
of spruce (Picea abies); in total more than 300 trees are examined. The tests<br/><br>
show that the method can detect decay caused by Heterobasidion annosum<br/><br>
with high accuracy. Finite element modeling and simulations are used to<br/><br>
validate the method.}},
author = {{Larsson, Bertil and Bengtsson, Bengt A and Gustafsson, Mats}},
institution = {{[Publisher information missing]}},
language = {{eng}},
number = {{TEAT-7111}},
series = {{Technical Report LUTEDX/(TEAT-7111)/1-15/(2002)}},
title = {{Non Destructive Detection of Decay in Living Trees}},
url = {{https://lup.lub.lu.se/search/files/6058631/624943.pdf}},
year = {{2002}},
}