How has air pollution affected Switzerlands forests?

Air pollution in Switzerland, particularly from nitrogen compounds and ozone, has adversely affected the health of its forests. Elevated nitrogen levels can lead to soil acidification and disrupt nutrient balance, harming tree growth and biodiversity. Additionally, ozone exposure can cause leaf damage, reducing photosynthesis and overall forest vitality. These impacts threaten not only the forests themselves but also the ecosystems and communities that depend on them.