SHARE
COPY LINK

WEATHER

Climate change prompts search for exotic trees

Tests are underway to find out what species would be best as the next generation of Germany’s street trees. As every year urban trees are subject to pollution, poor water conditions and limited root growth area many become sick.

Climate change prompts search for exotic trees
Photo: DPA

Even the classics such as Berlin’s horse chestnuts and plane trees are looking increasingly damaged prompting, consideration to be given to their replacement.

The project is part of a Berlin-Brandenburg project to find solutions to the climate changes expected over the coming decades. Other German regions are also at work trying to figure out how to keep cities green and cool in the future.

Scientists at a nursery in Kleinziethen just outside the city have planted around 80 exotic trees and are testing them to determine how well they might stand up to the increasingly dry conditions expected in the region over the coming years, according to a report in Die Welt.

The trees come largely from Japan, China, America or southern Europe. “We have chosen species which come from regions which are hot in the summer and dry, require as little care as possible, and are tough enough for the winter,” said Matthias Zander from the agriculture department of the Humboldt University.

As project leader he is in charge of 15 specimens of each species under investigations. Five will get optimal watering, five get less and the last five will be subjected to what he called ‘acute dry stress’. This last group is to stimulate the kind of long dry periods which are to be more often expected in the northeastern region of Germany.

The German Weather Service expects Germany to experience drier summers and wetter winters over the coming years and decades, with city environments becoming less suitable for trees through the stored heat and the covered ground.

“The picture offered by street trees will probably look more exotic in 20 years than we know it today,” said Zander.

Those species he is working with include the juneberry from northern America, whose leaves turn bright yellow and orange in the autumn, as well as the Chinese handkerchief tree, which has flowers which look like white handkerchiefs hanging from the branches, and the Japanese Katsura tree, which smells of burnt sugar or cakes when their bright orange autumn leaves fall.

Scientists in Bavaria have already planted several hundred trees in three cities as part of the Stadtgrün 2021 project to see how they grow and develop in the 21st century urban conditions.

Results from the tree tests are expected in a number of years, Die Welt said.

The Local/hc

Member comments

Log in here to leave a comment.
Become a Member to leave a comment.
For members

DISCOVER GERMANY

8 of the coolest places in Germany to visit on hot summer days

If you've had enough of the hot weather in Germany, here are a few places you can go to cool down (and discover more of the country).

8 of the coolest places in Germany to visit on hot summer days

Let’s face it: some of us are just not built for the heat. So when temperatures in Germany climb to the late 20s, above 30 – or even just under 40C – there is only one place we want to be: the fridge. 

But there are a few other spots where you can seek shelter from the sweltering heat. With temperatures this week set to climb above 30C in some parts of the country, here’s a look at the areas you can stay cool in and see the sights of Germany. 

READ ALSO: Weather – Germany sees record temperatures

Swim in the sea

You probably won’t be surprised to hear that temperatures are usually cooler by the coast thanks to the sea breeze. 

So we’d recommend heading to a coastal resort in Germany to cool down. At the popular Baltic Sea islands like Rügen, temperatures rarely climb above 25C which is more manageable than the extreme heat that often hits the inland regions. 

READ ALSO: Which regions in Germany have the best (and worst) weather?

Best of all, the Ostsee water temperature is around 17-18C in June, July and August, and it even drops below 15C from September. Perfect for those who like a refreshing dip.

Alternatively you could head to the North Sea coast or islands like Sylt or Juist. The water there is usually a few degrees cooler than at the Baltic Sea. 

A swimmer bathes in the Baltic Sea near Timmendorfer Strand in Schleswig-Holstein.

A swimmer bathes in the Baltic Sea near Timmendorfer Strand in Schleswig-Holstein. Photo: picture alliance/dpa | Frank Molter

Get lost in the Oppenheim cellar maze (Kellerlabrynth)

One way to escape the heat is to explore what Germany has to offer below street level. Oppenheim in Rhineland-Palatinate has an amazing network of cellars that people can check out with guided tours. Also known as the ‘city under the city’, visitors can descend several storeys down to a depth of 500 metres, and learn all about the history of the cellar system which dates back hundreds of years.

The temperature is a constant and cool 17C so there’s no chance of overheating. 

The cellar labyrinth in Oppenheim (Rhineland-Palatinate) under the old town

The cellar labyrinth in Oppenheim (Rhineland-Palatinate) under the old town is a great place to cool down and get a history lesson. Photo: picture alliance / dpa | Fredrik von Erichsen

Head to the Dechen Cave (Dechenhöhle) in the Sauerland

One of the most beautiful caves on display in Germany, the Dechenhöle in the Sauerland’s Iserlohn in North Rhine-Westphalia is well worth a visit. 

Around 360 metres of the 870 metre long cave have been arranged for visitors to explore, and the light shows look mesmerising. The cave was discovered by two rail workers in 1868 who dropped a hammer into a rock crevice. When they were searching for the tool, they discovered the entrance to the dripstone cave. 

The temperature of the caves is around 10C all year round so it’s ideal for cooling down. In fact, you’ll probably need a jacket.

The illuminated The Dechen Caves in March 2022.

The illuminated Dechenhöle in March 2022. Photo: picture alliance/dpa | Bernd Thissen

Visit a salt mine (Salzbergwerk)

The Salzbergwerk Berchtesgaden is the oldest active salt mine in Germany dating back to 1517, but it’s also a unique experience for tourists deep in the Bavarian Alps.

Hop on a miners’ train and travel 650 meters into the mountain, where you’ll find a large salt cathedral and a miner’s slide. The experience includes 3D animations depicting the mining of salt, as well as a boat trip across the underground salt lake. 

READ ALSO: Nine of the best day trips from Munich with the €9 ticket

Explore Berlin underground

If you want to cool down, and learn all about the German capital’s history, dive into Berlin’s underworld and walk through the tunnels and vaults, as part of tours by Berliner Untervelten E.V.

A jackets or a cosy jumper is recommended: the temperature is usually between 8 and 12C.

Explore the Berlin U-Bahn out of the heat.

Explore hidden parts of the Berlin U-Bahn and underground system of tunnels out of the heat. Photo: picture alliance/dpa | Monika Skolimowska

Drop into the ice cellar (Eiskellar) in Altenberge

This museum is the former ice-storage and fermentation cellar of the old Beuing Brewery in Altenberge. It showcases the history of the small town in the Münsterland region, and has an eerily beautiful setting. It was once one of the largest underground refrigerators in Europe with temperatures of around 8-10C.

READ ALSO: How to explore Germany by train with the €9 ticket

Take a dip in a very cold lake

Getting into any water is a great way to cool down during the hot summer months. But you could take it a step further and head to a very cold lake. 

Funtensee is a karst lake (which means it formed after caves collapsed) on the Steinernes Meer plateau in the stunning Berchtesgaden National Park, and the area is known for low temperatures. In fact, the coldest temperature ever recorded in Germany was on December 24th, 2001, when the mercury dropped to -45,9C at the Funtensee measuring station.

Luckily, it’s not that cold all year round but the water is still pretty chilly in the summer months at around 17 to 18C.

A view of the cold Funtensee.

A view of the cold Funtensee. Photo: picture alliance / dpa-tmn | Florian Sanktjohanser

Meanwhile, the water temperature at Frillensee, also in Bavaria, doesn’t rise above 10C even in summer. Just dipping your big toe in very cold lakes is enough to cool off.

Climb (or take a cable car) up Germany’s highest mountain

Playing in snow and ice while others sweat? Yes, it’s possible, way up on the Zugspitze glacier, which is part of Germany’s highest mountain, standing at around 2,962 metres above sea level. We recommend taking a tour, which runs from the Sonnalpin glacier restaurant to the edge of the ice on the Northern Schneeferner. The tours are a free service from the Bayerische Zugspitzbahn.

People enjoy stunning weather on the glacier at the Zugspitze in May 2021.

People enjoy stunning weather on the glacier at the Zugspitze in May 2021. Photo: picture alliance/dpa | Sven Hoppe

Visitors can take a train from Garmisch-Partenkirchen, or the station at Eibsee lake, which runs through the 4.5-km-long Zugspitze Tunnel before hopping on a cable car. If the mood takes you, you could also check out Germany’s highest church on the Zugspitz Plateau. The Maria Heimsuchung Chapel is a great place to reflect after a day of climbing and exploring the mountain.

SHOW COMMENTS