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Scientists say that EU climate goals are at risk because ailing forests absorb less carbon dioxide

Scientists warned that the damage to European forests caused by increased logging, fires, droughts and pests reduces their capacity to absorb carbon dioxide. This puts European Union emission targets at risk.

The European Union is committed to achieving net zero emissions in 2050. This target also includes the expectation of forests to absorb hundreds of millions tonnes of CO2 and store them in soil and trees, compensating for pollution from industries.

This assumption is no longer valid. According to a study led by scientists at the EU's Joint Research Centre, its independent science-research service, the amount of CO2 Europe’s forests removed annually from the atmosphere was almost a third less in 2020-2022 than it was in 2010-2014.

Nature published a paper that stated that forests in the latter period absorbed approximately 332 million net tons of CO2 equivalent each year. Recent data from EU-countries suggest that the decline is even more pronounced.

The paper stated that "this trend, coupled with the declining climate resilient of European forests indicates that the EU’s climate targets which depend on an increasing carbon sink could be at risk."

The land and forest sector in Europe offsets around 6 percent of the EU's greenhouse gas emissions. This is 2% less than the EU's estimate of what it will take to achieve climate goals. The gap is expected to grow by 2030.

Agustin Rubio, professor of soil science and ecology at the Polytechnic University of Madrid said that it would be "wishful" thinking to rely solely on forests to achieve climate targets.

He said that while forests can be helpful, they should not be given a specific number to balance carbon budgets.

These findings will be a headache for EU government officials who are currently negotiating a legally binding 2040 climate goal. This target is intended to offset the pollution from industries that cannot be eliminated by using forests.

Some have already warned that this will not be possible.

Last week, Sweden's Environment Minister Romina Pourmokhtari asked a question at a press conference. "What can we do about factors we as countries or governments cannot control, like forest fires and drought?"

The carbon stored in forests is being depleted by over-harvesting and climate-change-driven wildfires, droughts and pest outbreaks.

The paper stated that some of these risks could be managed, for example by reducing intensive logging or planting more tree species. This may increase CO2 storage, and help forests to withstand extreme climates and pests.

(source: Reuters)