Freshly felled pine trees Pinus sp stacked on a forest floor in Wales,showing annual growth rings. Each ring represents one year's growth thereby revealing the age of the tree. Study of the rings can indicate abnormalities due to disease & stress experienced during growth. In addition,factors relating to environmental conditions at the time of growth can be determined | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Ryan, Peter |
Taille de l’image : | 4999 px × 3296 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |