Chernozem
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A type of soil that develops on cool temperate steppes. The name comes from the Russian slang for black soil. It is extremely fertile and forms the breadbasket of Europe (the black soil zone). It is composed of a thick black humus layer with a well-developed aggregate structure, a carbonate accumulation layer, and a parent material (usually calcareous sediments such as loess), and characteristic calcium carbonate precipitates can be seen in the carbonate accumulation layer. Source : Heibonsha Encyclopedia About MyPedia Information |
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冷温帯のステップに発達する土壌型。黒土を意味するロシアの俗語が語源。きわめて肥沃でヨーロッパの穀倉地帯を形成（黒土地帯）。団粒構造の発達した黒色の厚い腐植層，炭酸塩集積層，母材（ふつうレスなどの石灰質堆積物）の順に重なり，炭酸塩集積層中には特徴的な形の炭酸カルシウム沈殿がみられる。
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