词条 | Kastanozem |
释义 | Kastanozem FAO soil group ![]() Kastanozems have relatively high levels of available calcium ions bound to soil particles. These and other nutrient ions move downward with percolating water to form layers of accumulated calcium carbonate or gypsum. Kastanozems are related to the soils in the Mollisol order of the U.S. Soil Taxonomy that form in semiarid regions under relatively sparse grasses and shrubs. Related FAO soil groups originating in a steppe environment are Chernozems (Chernozem) and Phaeozems (Phaeozem). |
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