Black earth soils have a high clay content which changes little with depth; usually neutral or alkaline.
== Distribution == There are two `Chernozem belts` in the world: from eastern Croatia (Slavonia), along the Danube (northern Serbia, northern Bulgaria (Danubian Plain) and southern Romania (Wallachian Plain)), to northeast Ukraine across the Black Earth Region and southern Russia into Siberia, and the other in the Canadian Prairies. Similar soil.....Found on http://en.wikipedia.org/wiki/Chernozem
(from the article `Dokuchayev, Vasily Vasilyevich`) ...the Novo-Aleksandr Institute of Agriculture and Forestry, adding departments of soil science and plant physiology. He organized soil surveys ... [9 related articles]Found on http://www.britannica.com/eb/a-z/c/65
black earth typically found in cool grassland climatesFound on http://phrontistery.info/c.html
Chernozem (black earth) is a type of soil that is characteristic of the continental interiors of the mid-latitudes, in which grassland formed the natural vegetation. Chernozems occur across the Russian steppes and parts of Romania and Hungary; these soils also occur in North America. The deep surface layer (A horizon) of a chernozem is black and ri...Found on http://www.probertencyclopaedia.com/browse/GC.HTM
chernozem (cher'nuzem") or black earth,variety of soil rich in organic matter in the form of humus. It is generally a modified type of loess. True chernozem is black in color, but there are various grades, shading off into gray and chestnut-brown soils. It forms in areas that have cold winte...Found on http://www.infoplease.com/ce6/sci/A0811698.html
one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Chernozems (from the Russian words for `black ...Found on http://www.britannica.com/eb/a-z/c/65
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