Which forest type, common in eastern North America, loses its leaves each autumn?

The forest type common in eastern North America that loses its leaves each autumn is the temperate deciduous forest.

These forests grow where seasons are distinct: warm summers, cooler springs and autumns, and winters that can bring freezing temperatures. Trees such as oaks, maples, beeches, basswoods, and elms shed their leaves before winter to conserve water and energy when cold conditions limit photosynthesis.

Leaf fall also helps recycle nutrients. Once leaves reach the forest floor, fungi, bacteria, worms, and other decomposers break them down, returning minerals to the soil. The colorful autumn display comes from pigments already present in leaves and pigments produced as chlorophyll declines.

A common mix-up is confusing deciduous forests with temperate rainforests. Temperate rainforests can occur in parts of North America, but they are dominated by exceptionally wet conditions and often include evergreen trees. Boreal forests, by contrast, are colder and are mainly associated with conifers such as spruce and fir.