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Chernozem (from or , translated as "''black soil, dirt or earth''") is a black-coloured soil containing a high percentage of humus〔 〕 (7% to 15%), and high percentages of phosphoric acids, phosphorus and ammonia. Chernozem is very fertile and produces a high agricultural yield. == Distribution == There are two "Chernozem belts" in the world: from eastern Croatia (Slavonia), along the Danube (northern Serbia, northern Bulgaria (Danubian Plain), southern Romania (Wallachian Plain) and Moldova) to northeast Ukraine across the Black Earth Region and southern Russia into Siberia, and the other in the Canadian Prairies in Manitoba. Similar soil types occur in Texas and Hungary. Chernozem layer thickness may vary widely, from several inches up to 60 inches (1.5 metres) in Ukraine.〔(Ukraine: Soils ) in Encyclopedia Britannica〕 The terrain can also be found in small quantities elsewhere (for example, on 1% of Polish territory). It also exists in Northeast China, near Harbin. The only true chernozem in Australia is located around Nimmitabel producing some of the richest soils in the nation.〔KG McQueen "The Tertiary Geology And Geomorphology Of The Monaro: The Perspective In 1994" () Centre For Australian Regolith Studies, Canberra 1994〕 The sale of agricultural land has been illegal in Ukraine since 1992; despite this, there is a black market for chernozem soil, sold in trucks, with approximately $900 million in annual sale.〔(Black market for black earth ), Kyiv Post (9 November 2011)〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「chernozem」の詳細全文を読む スポンサード リンク
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