Tree growth rings. Cross-section of a tree trunk showing the circular bands of growth rings. Each of the growth rings represents a year of growth for the tree. Counting these rings reveals the tree's age at felling. The rings can also give information on environmental conditions at the time of growth. Thick rings,for instance,indicate excellent growth conditions for the tree | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Hart-Davis, Adam |
Taille de l’image : | 3796 px × 4646 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |