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Many city dwellers think that trees belong in the forest. But they overlook the fact that the trees in our cities fulfil important functions.

A single tree produces up to 1200 litres of oxygen per hour. Or to put it another way: During its growth period in summer, it produces the breathing air for ten people - through a process called photosynthesis.

The tree as an economic asset

The wood from trees is an important, renewable source of energy worldwide. It also serves as a building material and raw material for all kinds of materials such as cellulose (paper production) and viscose (textile production).