摘要
A lot of studies have been conducted on CaCO<sub>3</sub> content in paleosols and loess, but the illuvial depth of CaCO<sub>3</sub> was never studied. However, the latter is more important in indicating the types and developmental conditions of soils.
基金
Project supported by the National Natural Science Foundation of China and Xi'an Loess Research Section, Academia Sinica
