Forest is one of the most important ecosystems of the National Park, rich with great variety of flora, fauna and mushrooms. Location and condition of the forests influence the quality of air, water and landsdcape in the surrounding area.
Forests occupy almost 45% of the territory of the National Park. They are classified as: 1st group (reserves) – 9%, 2nd group (preservation of ecosystems and recreation) – 31%, 3rd group (protected areas) – 36%, 4th group (industrial timber) – 24%. Fir groves prevail in the Park (47%), other common groves are pine (26%), birch (13%), alder (4,4%), oak-woods (4,1%). Some forests of the Žemaitija National Park meet the requirements of the EU Habitats Directive.ž