They are referred to as deciduous.
Deciduous trees shed their leaves in the fall.
Autumn or Fall as some countries call it. :)
conifers
Evergreen trees do not shed their leaves in the Autumn.
Deciduous trees shed their leaves in the winter. This process is known as leaf fall or autumnal abscission. Deciduous trees go through this cycle to conserve energy and survive harsh winter conditions.
All deciduous trees shed annually, but some shed later in the year than others, such as the Blood-oak, which sheds it leaves in spring, instead of fall. Trees that do not shed their leaves annually are not deciduous.
deciduous forests
Trees that shed their leaves are called deciduous.
Autumn (fall) is the season when deciduous tree shed their leaves in the north.
The types of trees that are deciduous have leaves that shed every fall such as the maple tree.
A tree which sheds it's leaves once a year is called deciduous.
coniferous