发育于地势低平、受地下水或潜水的直接浸润并生长草甸植物的土壤。属半水成土。其主要特征是有机质含量较高，腐殖质层较厚，土壤团粒结构较好，水分较充分。分布在世界各地平原地区。
半水成土土纲的潮土和山地灌丛草甸土等土类；
The order of semi-hydromorphic soil contains the great groups of Chao soil and mountain scrubby-meadow soil.
典型土壤选择草甸土、黑钙土、草甸碱土三种。
Selected soils are meadow soil, Black Calcium soil, and meadow alkali soil, respectively.
大部分黑土和褐土属于较高水平，而白浆土、草甸土和棕壤偏低。
The level of available silicon is higher in Black soil and Cinnamon soil, but lower in Albic soil, Meadow soil and Brown earth.
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