Over here we call it 'Holzmiete' [2], which translates to 'wood pay/wages'.
Fun fact: haystacks follow the same principle! [3]
[1] https://en.wikipedia.org/wiki/Firewood#Storing [2] https://de.wikipedia.org/wiki/Holzmiete [3] https://en.wikipedia.org/wiki/Hay#Stacks