A high soil quality role is a soil quality role inherent in a region of relevance reflecting that the soil, that is part of the bearer, has a high soil quality.
A soil quality role is a role inherent in a region of relevance reflecting how well a soil, that is part of the bearer, performs the functions of maintaining biodiversity and productivity, partitioning water and solute flow, filtering and buffering, nutrient cycling, and providing support for plants and other structures.