What is a deciduous forest? A temperate deciduous forest is a biome that is mainly dominated by broad-leaf trees that lose their leaves each year. These forests also experience the autumn season where plants lose their green chlorophyll pigments. They are most commonly found in areas that have warm, moist summers and mild winters. These forests have dense canopy in the summer and a diverse understory that blooms during the spring. Some areas of the world that have these biomes are eastern North America, eastern Asia, and Europe. | |