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The Interior Plains physiographic area stretches across Canada and the United States, and the two governments each use a different hierarchical system to classify their portions. In Canada, the Interior Plains makes up one of seven physiographic areas included in the highest level of classification - defined as a "region" in that country.
It is part of the Interior Plains, the Canadian extension of the Great Plains, and covers approximately 520,000 square kilometres of land and water. [ 1 ] Establishment of the agricultural industry has had a significant effect on the land, which now retains "little of the natural vegetation" [ 1 ] it had before the area was settled.
Prairies are the dominant ecosystem of the Interior Plains of central North America. The main vegetation type of this temperate grassland is herbaceous plants like grasses, sedges, and other prairie plants, rather than woody vegetation like trees. [2] Grazing is important to soil, vegetation and overall ecological balance.
View of sand dunes and vegetation at Fossil Lake, with the Christmas Valley Sand Dunes, Feb. 21, 2017. The most significant area of the prairies, from Indiana to North Dakota, consists of till plains, that is, sheets of unstratified drift. The plains are 30, 50 or even 100 ft (up to 30 m) thick covering the underlying rock surface for thousands ...
Chernozemic soils have mean annual soil temperatures above 0 °C and occur in regions of semiarid and subhumid climates. Covering more than 4% of Canada's land area, they are the major class of soils in the southern Interior Plains, where grass is the dominant native vegetation.
Mixed prairie is more common and is part of the dry interior plains that extend from Canada south to the U.S. state of Texas. The northern short grasslands (WWF terminology) shown here on a map of North America in green, is a type of true prairie (grassland) that occurs in the southern parts of the Prairie Provinces.
The protected grasslands of North America consist of prairies, with a dominant vegetation type of herbaceous plants like grasses, sedges, and other prairie plants, rather than woody vegetation like trees. Grasslands were generally dominant within the Interior Plains of central North America but was also present elsewhere.
Interior scrublands occur naturally in semi-arid areas with nutrient-poor soils, such as on the matas of Portugal, which are underlain by Cambrian and Silurian schists. Florida scrub is another example of interior scrublands. Dwarf shrubs Moorland on Kilimanjaro. Some vegetation types are formed of dwarf-shrubs, low-growing or