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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 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 ...
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.
Indiangrass thrives in deep, moist, prairie soils, woodland edges and bottomland habitats. In addition to its value as livestock and wildlife forage, Native Americans utilized Indiangrass as ...
Tall grasslands, including the tallgrass prairie of North America, the north-western parts of Eurasian steppe (Ukraine and south of Russia), and the Humid Pampas of Argentina, have moderate rainfall and rich soils which make them ideally suited to agriculture, and tall grassland ecoregions include some of the most productive grain-growing ...
In the US, Mollisols occur mostly on the Great Plains, and in some areas of the west. There is a considerable variety of Mollisols, including soils very closely resembling the Chernozem ("black earth") of eastern Europe (parts of Russia, Ukraine and neighboring regions), and the Chernozemic soils of the Canadian prairies.
In Iowa, forest soils and alfisols formed on the paha, while prairie soils and mollisols formed on the surrounding landscape. [11] Most paha are still covered with trees or grazed while the surrounding landscape is in European-style agriculture.
The tallgrass prairie ecosystem covered some 170 million acres (690,000 km 2) of North America. Besides agriculture, much of the shortgrass prairie became grazing land for domestic livestock . Short grasslands occur in semi-arid climates while tall grasslands are in areas of higher rainfall.