What distinguishes fluvial great groups from other types?

Fluvial great groups are primarily distinguished by their sediment characteristics, particularly their sand dominance. These soils typically form in river or stream settings, where the transportation and deposition of materials result in a higher proportion of sand-sized particles. The processes of erosion and deposition in these environments contribute to the formation of well-sorted soils with significant sand content, which can influence drainage, aeration, and overall soil structure.

Understanding the composition and characteristics of fluvial soils is crucial for various applications, including agriculture, ecology, and land management. The dominance of sand in fluvial great groups often results in specific behaviors regarding water retention and nutrient availability, which sets them apart from other types of soils that may have different particle size distributions, such as heavy clay soils typically found in alluvial or deltaic environments.