What characterizes depleted matrix in hydric soils?

The characteristic that defines a depleted matrix in hydric soils is color change due to saturation. In hydric soils, saturation leads to anaerobic conditions, which can affect the soil's color. A depleted matrix often appears as a gray or muted hue, indicating that iron and other minerals have been reduced due to the prolonged saturation and lack of oxygen. This color change is a primary indicator of hydric soils and is critical for identifying areas that may be wetland environments.

The other aspects such as fine texture, presence of organic matter, or consistent grain size do not specifically indicate the condition of a depleted matrix in hydric soils. Texture can vary widely and is not directly linked to the matrix being depleted; likewise, the presence of organic matter does not specifically signal depletion. Consistent grain size also does not correlate with hydric soil characteristics, as soils can have varying particle sizes within the same hydric profile.