Monitoring of cold stress in trees by Acoustic Emission Technique, - PowerPoint PPT Presentation

Monitoring of cold stress in trees by Acoustic Emission Technique, thanks to waveform feature analysis ACOUFREEZE Katline Charra-Vaskou INRA, UMR PIAF, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, FRANCE water movement and embolism formation during freeze-thaw in trees Agreenskills Annual Meeting, Meteopole International Center, Toulouse, France October, 28 th 2014

Water ascension within tree

Water ascension within tree Wood: Long dead cells: vessels of water transport system and living cells

What will occur within a tree during a freezing event? ?

What will occur within a tree during a freezing event? ? Focus on trunk or branches…. How can living cells survive to freezing events ? How can the water transport system be still functional after one or more freeze-thaw cycles?

During a freeze-thaw cycle… ? Let’s have a look inside the tree…. And let’s listen to the tree…!!

Monitoring of cold stress in trees by Acoustic Emission Technique, thanks to waveform feature analysis