What is the effect of low base saturation on soil classification?

Low base saturation refers to the proportion of soil bases (calcium, magnesium, potassium, and sodium) relative to the total cation exchange capacity (CEC) of the soil. When base saturation is low, it typically indicates that soil fertility may be limited because fewer nutrients are available for plant uptake.

In terms of soil classification, particularly regarding the "mollic" classification, this factor is crucial. A mollic epipedon is characterized by a dark color, a thick layer, and a high base saturation (generally above 50%). If the base saturation is low, it suggests that the soil does not meet the requirements for this classification. Therefore, the lower the base saturation, the less likely the soil will qualify as mollic, affecting its classification.

This connection between low base saturation and its potential impact on the classification of soils underscores the importance of nutrient availability and soil properties in determining how soils are categorized. Understanding these relationships is essential for accurate soil judgment and classification in various agricultural and environmental contexts.