Natural areas - are certain areas of the earth's surface that are substantially different from other originality of natural resources, especially in appearance.This division is practiced for a long time and is able to exercise the natural and geographical regionalization.
simpler terms, the natural area - a territory appearance, flora and fauna are strictly defined and similar to any other.The peculiarity specific to each of them, unmistakable, and allows certain types of plants or animals are in accordance with the areas in which they can grow or live.
Natural areas are easy to recognize and change the nature of the dominant vegetation type.That it can be clearly seen where one ends and the next originates.
Terms survival of certain species of trees, grasses, shrubs determined special climatic characteristics, which provides a variety of natural areas.For each of them characterized by individual characteristics, thanks to the different rainfall, humidity and air temperature.
Natural areas are so diverse that in one part of the world can mercilessly scorching sun and vegetation also be scarce, as well as the animal world, and in the other - the permafrost and never melting snow.The contrast is more than obvious.However, in nature everything reasonably and harmoniously, these transitions are not sharp.
Natural areas of the world are: Arctic desert and tundra, taiga and mixed forest, steppe and subtropical forest, Mediterranean zone and monsoon forest, arid desert, semi-desert and arid steppe.Also isolated semi-arid desert, grassy savannah, savannah wood, dry and wet tropical forests, alpine tundra and mountain forest.
characteristic natural areas provides a description of all the climatic features that are inherent in them.For example, the most mysterious and still little studied area of the Arctic and Antarctic ice harsh deserts as well as area less harsh climate - the tundra, are in the Antarctic and Arctic zones.
In the Arctic, the temperature is low, very little rain falls, the whole area is covered with ice, the vegetation of lichens and moss only.
in the tundra high humidity, strong winds, numerous lakes and swamps, and the soil is a real permafrost.The peculiarity of the territory - a treeless, as well as moss and lichen cover.The nature in this region is very poor and monotonous.
characteristic natural areas requires not only a description, but also allows for a smooth transition, an example of which can serve as tundra and woodlands.In such areas there may be flora and fauna peculiar to the two adjacent areas.
Natural areas of the world are revealed in full its glory in the forest zone in the area of the Northern Hemisphere, where there is a real kingdom of deciduous and mixed forests.There are common trees such as oak linden, ash, beech, maple.Summer in this area is quite warm up to 20 ° C and severe winter, down to -50 ° C, the humidity is high.
forest steppe may also be called a natural transition zone, which is located in the Northern Hemisphere.In this region there is an alternation of coniferous forests and steppes, the abundance of tall grass, which is clearly seen in the United States and Canada.
steppe zone is located in the northern temperate geographical zone, there are no forests, and the area is covered with grass, but not enough moisture.Conditions for tree growth is only in the river valleys.Soil - humus, which is heavily used by man.
deserts and semi-deserts are located in the following zones: temperate, tropical and subtropical.Precipitation is scarce.These areas are characterized by flat surface, the scarcity of flora and fauna specificity.There deserts are very different: sandy, saline, stony, clay.
Currently, scientists have estimated that the desert occupies more than 16.5 million sq. Km (excluding Antarctica), and that 11% of the land surface.From Antarctica, this area is more than 20%.Grass in the desert scarce, soils are underdeveloped, sometimes there are oases.
Perhaps the most exotic are the rainforests.They have no seasonal differences in weather and the trees show no growth rings.It is a paradise for plants and attractive place for researchers wildlife.
