Final answer:
Acid soils characterized by a light-colored E horizon over a reddish-brown spodic horizon in climates that support coniferous forests are known as Spodosols.
Step-by-step explanation:
Acid soils are typically characterized by a subsurface accumulation of humus integrated with aluminum and iron, often manifesting as a light-colored E horizon overlying a reddish-brown spodic horizon. These soil properties are indicative of Spodosols, which are commonly found under coniferous forests in cool, moist climates. Other soil horizons include the O horizon at the surface, rich in organic matter and nutrients, the A horizon or topsoil which is darkly colored due to organic matter, and the B horizon or subsoil where fine material accumulates.
The C horizon, or soil base, is composed of parent material with organic and inorganic material forming the soil. Soil drainage and local vegetation types also influence organic matter accumulation. In well-drained areas, the soil can have a more brownish or reddish color due to the presence of ferric (Fe³+) iron.