What does tree trunk mean

Tree trunk

What are the tasks of the tree trunk and how is it built?

The trunk of a tree is usually upright and branches at a certain height. It consists of six different zones viewed in cross section. The outer layer forms the bark and this acts as a protective cover against external influences. Behind it, towards the inside of the trunk, is the bast. Form together bark and bast the bark. Furthermore is the bast responsible for the transport of sugar compounds and ions dissolved in water. The direction of transport is from the crown to the root. Then, seen from the outside, the third zone follows, namely that Cambium. This layer is used to increase the thickness of the tree. This forms depending on the climate Cambium at different speeds. The resulting growth zones are called annual rings, these are formed in the next zone, the so-called Sapwood. The Sapwood conducts water and ions through its capillaries into the canopy and stores starch and sugar in its parenchyma. When the tree gets older it usually forms a so-called misrecognition, which in many cases darkens in color. This zone is the so-called core. This Heartwood has essentially static functions and stores phenols in some trees, these have rot-inhibiting properties. This usually results in the discoloration in the Heartwood.