What might the presence of a sandy/dark surface indicate regarding soil health?

The presence of a sandy and dark surface in soil can indicate a potential hydric condition. The dark color typically results from high organic matter content or the accumulation of minerals that establish conditions suitable for wetlands. Sandy surfaces can often be associated with more permeable soils, which may contribute to the development of hydric conditions if saturated for significant periods, allowing organic matter to accumulate and develop into hydric soils.

In this context, identifying a sandy and dark surface suggests that the soil can retain water for certain periods, indicating the possibility of wetland characteristics. This relationship is significant in assessing soil health as it informs about organic matter content and influences biodiversity and nutrient availability, both of which are critical factors for overall soil health.