How to determine the counting factor of your own thumb for Bitterlich plots

Lesson 10: How cool is that!!! You can calculate your own personal counting factor for Bitterlich plots using your thumb on your streched out arm. With this simple calibration you are able to establish a Bitterlich plot and estimate the stand basal area without any device using your own thumb.
#unigöttingen
#forestinventory
#forestmensuration

[@earthboundireland]

I'd be interested in lots more of these kind of low tech old fashioned measurement techniques for days when I don't have my kit with me. Great work thank you for taking the time to develop these resources.

[@vever1769]

Danke! Sehr hilfreich 👍🏻

[@felipemachado3500]

Thank you very much for this tutorial. Best regards from Federal Rural University of Rio de Janeiro, Brazil.

[@forestinventory]

Muito!

[@forestinventory]

Espero que as legendas em português sejam úteis!

[@felipemachado3500]

@@forestinventory Sim, elas são!

[@HerbertKraus242]

Da bin ich jetzt neugierig, ob meine eigene Einschätzung zutreffend ist - als Bauer mit 9 Jahr Volksschul kann ich mich schließlich nicht mit akademischen Förstern messen

[@forestinventory]

A nice video on the work of Walter Bitterlich: kzbin.info/www/bejne/mn7Oap2Ee5KeftE

[@eziLoreno]

Isn't 7÷2.4=2.9... much simpler?

[@forestinventory]

Unfortunately this is wrong! Try it with other values. In this case your result (2.91) is close to the correct 2.93, but only by chance. If you can provide a mathematical proof that (50*d/r)^2 = r/d*10 you can try to convince me... I am a friend of simplifying things, but this one is maybe too simple or i don't see it. But it's always good to question things!

[@forestinventory]

A link to the AWF Wiki article on Bitterlich plots: wiki.awf.forst.uni-goettingen.de/wiki/index.php/Bitterlich_sampling

[@lorenzklesl2887]

Warum english🤦🏻🤦🏻

[@forestinventory]

Weil unsere Zielgruppe und unsere Studenten international sind... Lediglich 5% der Zugriffe kommen von deutschsprachigen Nutzern. Aber wir haben Deutsche Untertitel, die man in den Einstellungen der Videos aktivieren kann.