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German Engineers are Building Future-Proof Forests

German Engineers are Building Future-Proof Forests
German Engineers are Building Future-Proof Forests

Forest engineers use biodiversity for future-proofing forests

Plantations of Spruce are vulnerable to pests and climate change

Long-term forest restoration is hindered by financial challenges

Joanna Gill

From the 35-metre tower, all that is visible now is a flattened plateau. The trees are gone after being wiped out by a bark beetle infestation in 2018.

Experts call this "calamity" that happened so quickly, 60-year-old oak trees fell in a matter of weeks in this forest in North Rhine-Westphalia along Germany's border to the Netherlands and Belgium.

Petra Trompeter of Arnsberg's city forestry department said, "It is shocking for me, and for every forester." She was squinting in the low winter sunlight from the base the tower.

Over many years, storms and droughts created conditions that allowed bark beetles the opportunity to consume rows upon rows of spruce.

According to the World Meteorological Organization, 2024 will be the first year that global warming exceeds 1.5 degrees Celsius (2.7 Fahrenheit).

Climate change disasters will increase in intensity and frequency in a warmer world. They could also threaten the ability of forests to absorb carbon and thousands of jobs in the tourism and wood sectors.

The independent Expert Council on Climate Issues in Germany warned that the country may miss its climate targets after 2030 as forests and wetlands, which were previously carbon sinks, are now becoming sources of emissions as a result of forest degradation.

Forest engineers in North Rhine-Westphalia are now working to create resilient forests by combining tree species. This is part of a European Union-funded program.

Trompeter said that even before the disaster we had been working to make the forest more diverse and structurally rich. The calamity forced us to act more quickly.

Future Forests

After World War Two, Germany planted spruce trees to harvest timber to pay reparations owed by the Allies.

The species is favored by timber producers for its rapid uniform growth.

These single-species plantations make?North Rhine-Westphalia’s forests vulnerable to heat, pests and drought.

When everything is going well, the returns are positive, but when extreme weather causes mass tree losses, these are seen as "inevitable". Monoculture plantations may also be partly responsible for Germany's forests being unable to absorb carbon.

He said that "natural forests can hold a lot more carbon."

Diversification has been identified as a possible solution and is currently being tested across Europe.

The 20 million-euro SUPERB Project, led by the European Forest Institute, and funded through the EU Green Deal, has seen forestry experts from Sweden to Spain set up twelve demonstration sites, including Arnsberg, in order to restore habitats, and transform monocultures.

The Arnsberg area is 34 hectares and includes both public and private land. Forestry experts carefully selected four conifers and broad-leaf trees they believed could adapt to altitude and climate, and withstand hotter and dryer conditions in the future.

Marcus Lindner is the head of resilience at the European Forest Institute.

While the majority of forestry experts agree that variety is important, there are differing opinions on how to achieve it.

Others prefer curated plantings of local species while others want to experiment with nonnative trees.

Trompeter explained that this is not possible because nature protection laws in North Rhine-Westphalia only allow for local species. "And there we reached our limit."

Banning on Biodiversity

According to the German Agriculture Ministry, trees?play a critical role in the economic system, providing 76 million cubic meters of timber each year, 750,000 employment opportunities in forestry and wood, as well as boosting the rural economy through eco-tourism.

Rouven Soyka is the press officer of the Sauerland Tourism Board. The Sauerland region in?North Rhine-Westphalia has a hilly terrain that's a popular hiking destination. However, the massive dieback caused the area to be unrecognisable to some visitors.

Nature tourism is affected by all means. It's very important that nature is preserved in our classic outdoor region.

Many forest owners cannot afford to reforest without state subsidies that do not cover the entire cost.

Peter Jungermann says that he must think twice about investing in high-maintenance broad leaf varieties, rather than market-friendly conifers. This is especially true given the financial pressures on forest owners.

It can be a "existential threat" to the nursery if he makes the wrong decision about which tree he should plant.

The shifting political winds can also complicate planning for the future.

Due to the backlash of businesses and farmers, key laws that were meant to be part the EU's Green Deal have been watered-down in the last year.

It is still unclear how much money the EU budget for 2028-2034, which amounts to 2 trillion euros (2.35 trillion dollars), will allocate to forest restoration. Negotiations are expected to take place over the next two-year period.

The German budget for 2026 prioritizes defence and infrastructure as the government tries to revive a sluggish economic.

Trompeter said that forests are essential to human life and the health of the planet. "Where else can we spend it than on preserving nature and making it climate resilient?"

(source: Reuters)