Michigan consists of three different biomes; coniferous forest, deciduous forest, as well as the savanna. Most of lower Michigan is considered to be deciduous forest because it consists of a lot of deciduous trees. To be a deciduous tree it means that in fall they lose their leaves and go dormant in the winter. The northern lower peninsula as well as the upper peninsula is considered to be coniferous forest which means that they have long cold winters as well as short cool summers. Grand Rapids is considered to be a deciduous forest. What makes Grand Rapids a temperate deciduous biome is because it is very cold in the winters but has warm summers. The cold and warm air makes for an average climate and for the soil to remain very fertile.