Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Non Destructive Detection of Decay in Living Trees

Publiceringsår: 2002
Språk: Engelska
Publikation/Tidskrift/Serie: Technical Report LUTEDX/(TEAT-7111)/1-15/(2002)
Volym: TEAT-7111
Dokumenttyp: Rapport
Förlag: [Publisher information missing]


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.


  • Electrical Engineering, Electronic Engineering, Information Engineering


  • Electromagnetic theory-lup-obsolete

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen