Street and park trees

Uferpromenade

Trees in streets and in parks characterise the appearance of our city. They improve the city climate sustainably by producing oxygen, removing dust particles and creating shade. They thus make an important contribution to wellbeing in the city.

The following pages contain information on the benefits of street trees, their protection and maintenance, notes on diseases and pests.

Trees ensure that we feel good in the city and improve out quality of life. Yet they give us far more. Trees are of great benefit for humans and animals. They are the habitat of animals and form stepping stones for habitat connectivity. Yet trees have many other positive effects too:

10 x MORE BREATHABLE AIR

On average, one street tree supplies ten people per day with oxygen. That means: ten times more air to breath. At the same time, they reduce the greenhouse gas effect and clean the air by filtering out dust and pollutants.

Trees produce oxygen
Regardless of whether beech, oak or larch: Trees process toxic carbon dioxide through their foliage or needles and, with the help of solar energy, produce oxygen that is vital for us. How much O2 a tree can produce per day depends on its size and its number of leaves. And the number of daylight hours of course. A full-grown beech tree, around 80 to 100 years old, for example, produces roughly 13 to 15 kilograms of oxygen in one day. This is equal to the daily requirement of at least ten people.

Trees filter our air
Yet trees can do much more: They filter dust and other harmful particles from the air and keep the air clean.

15 X MORE WIND PROTECTION

Planted in rows, city trees provide us with a wind protected area that is around fifteen times their own height. This makes it more pleasant for people and animals to occupy the streets.

Trees protect against storm and rain
When it is windy or storm, it can get unpleasant in the city. Without trees, our houses and streets are largely unprotected. If trees are planted in dense rows or groups, the shelter effect or “wind shade” they achieve is ten to fifteen times their height. Trees also provide us with protection from heavy rain.

100 X MORE ATMOSPHERE

City trees improve the appearance of our streets and ensure quality of life. That means: We feel better with trees and at the same time identify ourselves with the surroundings.

Trees are friends
City trees have a calming effect on people. We trees we feel better. Sick people recover faster if there is a tree in front of their window. And trees in front of our front door ensure a very special ambience. We even develop an emotional relationship with some trees. They remind us of people, certain events or experiences. They are part of our life.

Trees upgrade the environment
City trees improve the appearance of our surroundings. Urban canyons and streets would appear bare and dreary without them. They conceal unsightly corners and elements in the cityscape and enhance the city’s architecture. Planted along the road, trees help to steer or control the traffic. At the same time, their canopy of leaves protects road users from dangerous reflection and glare effects.

30,000 X MORE SHADE

A city tree has 30,000 leaves on average. That means: 30,000 times more protection from the sun and rain. Yet not only that: Trees cool the environment on hot days and provide us with moisture.

Trees ensure a pleasant climate
A European deciduous tree has 30,000 leaves on average. An 80 to 100 year old beech or oak can bear 120,000 to 800,000 leaves. The denser and broader the leaf canopy, the more shade the city trees provide us with in the summer. They also cool the air on hot days. By discharging moisture through their leaf pores, they provide a pleasant climate in the city. Their dense leaf canopy also attenuates traffic noise.

CIR aerial photo Berlin 2005 (CIR - Colour-Infrared)

Condition of the street trees (vitality)

Inner-city street trees are exposed to different harmful effects, which negatively affect the health and vitality of the trees. The condition and development of Berlin’s street trees are documented in the street tree condition report. Condition of the street trees (vitality)

Mehltau an Kastanie

Diseases and pests

Weakened trees are particularly susceptible to diseases and pests. Street trees often only have a limited space available to them to live. Compacted and sealed root areas affect the vitality of the trees just as much as injuries or damage caused by external influences. Diseases and pests

Astentfernung im Kronenbereich

Tree maintenance, protective measures and planting

In densely built areas of Berlin’s inner city, the location conditions do not correspond to those in the rural landscape. Consequently, damage occurs, which impairs the health and vitality of the trees. Street trees therefore need more intensive maintenance. Tree maintenance, protective measures and planting

Map in the Geoportal Berlin