The Aroostook Hills Biophysical Region is part of the Northeastern Mixed Forest Province and the Aroostook Hills and Lowlands Ecoregion Section. There are 3 Forest Provinces, 6 Ecoregion Sections, and 19 Biophysical Regions in Maine.
Province: Northeastern Mixed Forest
The Northeastern Mixed Forest Province is characterized by a modified continental climatic regime with a maritime influence along the Atlantic Ocean. Winters are moderately long with continual ground snow cover. Annual precipitation is generally equally distributed with a peak during summer. Vegetation of this area consists of forests that provide a transition between boreal conifers and broadleaf deciduous.
Ecoregion Section: Aroostook Hills and Lowlands
The Aroostook Hills and Lowlands Section is a glacially scoured and dissected peneplain; terrain is gently rolling and pitted outwash plain with scattered low mountains. Bedrock consists of weakly metamorphosed sedimentary formations of shales, sandstones, and limestones. Vegetation is mainly forests of spruce-fir and maple-beech-birch cover types.
Biophysical Region: Aroostook Hills
The Aroostook Hills Biophysical Region is 92% forested. The spruce-fir forest type represents 47% of those acres.
The top three tree species in this region (based on the stocking of live trees per average forested acre) are:
- Balsam Fir (47 trees per acre) means 47 live trees (5.0”+ DBH) per forested acre
- Northern White Cedar (30 trees per acre)
- Red Spruce (20 trees per acre)
This graph shows major tree species/species groups, live tree stocking (trees/acre), and how much they contribute to the overall stocking for the Aroostook Hills Biophysical Region:
Check out the other bioregion in the Northeastern Mixed Forest Province and the Aroostook Hills and Lowlands Ecoregion Section: