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This is a large area covering 407,000 square kilometres (157,000 sq mi) from northern Illinois through most of Missouri, eastern Kansas, Oklahoma and into Texas. This area was traditionally a mixture of woodland and tall grass prairie, which as the soil consists of highly fertile mollisols, most of the area has been converted to farmland ...
Mollisol is a soil type which has deep, high organic matter, nutrient-enriched surface soil , typically between 60 and 80 cm (24-31 in) in depth. This fertile surface horizon, called a mollic epipedon, is the defining diagnostic feature of Mollisols.
The Des Plaines River and Kankakee River converge near here to form the Illinois River. Until heavily exploited for its natural resources during the 19th and early 20th centuries, the Goose Lake area was a stable wetland, with swathes of prairie grass surrounding the shallow Goose Lake. The region is in the Central forest-grasslands transition ...
The steel plow invented by Illinois blacksmith John Deere in 1836 could cut through the thick, often sticky, prairie topsoil, and the discovery of underground aquifers of fresh water for ...
Name Photo Location [4] Date formed Area [1] Description Midewin National Tallgrass Prairie: Illinois: 1996: 20,283 acres (82.1 km 2) [5]: The only federally managed prairie east of the Mississippi River, Midewin is in the Central forest-grasslands transition ecoregion and was created when land was transferred to the U.S. Forest Service from the U.S. Army.
The standard reference is The Deciduous Forest of Eastern North America. [5] 52 Driftless Area (far northwestern Illinois) 52a - Savanna Section; 52b - Paleozoic Plateau/Coulee Section; 53 Southeastern Wisconsin Till Plains (northern Illinois) 53a - Rock River Drift Plain; 53b - Kettle Moraines; 54 Central Corn Belt Plains (northern and central ...
The soils, mostly Vertisols and Mollisols, are deep, loamy and clayey, and tend to be finer-textured than in the Lower Rio Grande Valley (34e) to the north. Some Entisols and Inceptisols occur near the river. The floodplain ridges once had abundant palm trees, and early Spanish explorers called the river "Rio de las Palmas." Most large palm ...
The Illinois Land Conservation Act (Public Law 104-106) created the Midewin National Tallgrass Prairie, designated the transfer of 19,165 acres (7,756 ha) of land in Illinois from the U.S. Army to the U.S. Department of Agriculture's Forest Service. The Illinois Land Conservation Act mandates that Midewin be managed to meet four primary objectives: