Natural areas of North America to extend along the meridians, because in each region of the continent has the opportunity to develop certain industries.The deeper the natural area is, the more it stretches along the meridian.The fact that the topography lead to changes in the ratio of heat and moisture, not only from north to south, and from west to east.
Natural areas in North America, located in the area of Greenland and the Canadian Archipelago, called Arctic desert.As climatic conditions are very harsh, this contributed to a very poor representation of flora and fauna.In areas that are not occupied by ice, it can be seen only mosses and lichens.Almost all the wildlife living in the ocean.
In the far north of the mainland is the tundra zone.Because there is always humidity, the territory became waterlogged.Virtually the entire area is covered with mosses and lichens.As for the trees, the dwarf birch and alder does not reach a height greater than 5 cm.
farther to the south, the natural areas of North America increasingly becoming similar to the tundra.It is considered a transitional phase, and is characterized by alternating areas of forest and tundra.Also, it is characterized by thickets of alder and willow.Only in the area of the rivers begin to appear spruce and larch.
Nature Area coniferous forests located further south.Here you can watch the harsh and long winter and the summer - a short and warm.With regard to soil moisture and air, since the area is characterized by a low level of fumes, moisture is in excess.
Natural areas of North America are characterized by intermediate phases.So, between coniferous and deciduous forests area is mixed forest.
And on the territory of the Appalachian area of deciduous forests is presented, which is characterized by a variety of tree species.As for the animals, there are a lot of deer, porcupines, bears baribalu and possums, which are the only representatives of the marsupials in the whole continent.
Regarding the plains of the continent, there is a zone of forest.Eastern part is called the prairie because it has a higher degree of moisture.Today this area is fully plowed, because it is characterized by the equality of the soil, favorable climatic conditions and a good black soil.
North America, natural areas which are located precisely on territorial jurisdiction, is characterized by the presence of the steppe zone in the central part of the continent.Here comes a large amount of heat, but it is not a sufficient amount of moisture is replenished.
As for the eastern part of the subtropical zone, there grow mixed forests, represented by numerous species of pine, dwarf palm trees and shrub species of evergreen oak.
If we talk about the Pacific coast, is dominated by hardwood forests and bushes.The soils are brown, and they grow a lot of rare species of evergreen oak, which were known even before the Ice Age.
Natural areas of America, occupying a peninsula Florida and California are called subtropical and tropical.The zones are alternated each other meridian.The interior of the area is fully occupied savannas and woodlands.With regard to the Atlantic coastal plain, it is abundantly moistened trade winds because it is very large amount of tropical forests.
The Cordillera most clearly represented by high-altitude zone.
