True
Forests have a closed canopy of vegetation, which protects the soil from erosion and the sun's rays. The organic waste falls to the ground and accumulates at the top of the soil profile. These organic materials break down by microorganisms and become soil rich in nutrients and water-holding capacity.
Grasslands have an open canopy of vegetation, allowing the sun's rays to reach the soil surface. The grasses tend to shed their leaves less frequently, and the leaves are usually drier and less nutritious than trees. Grassland soils are more exposed to erosion and weathering, which can lead to the loss of organic matter.