Glossary Terms

Showing entries starting with “G”.

G

Gabbro

A dark, coarse-grained igneous rock composed mainly of plagioclase and pyroxene, sometimes weathering into fertile soils.

Gains from erosion control

The ecological and economic benefits achieved by reducing soil erosion, such as higher productivity and improved water quality.

Gaseous losses

Losses of nutrients from soil to the atmosphere in the form of gases, including nitrous oxide, ammonia, or carbon dioxide.

Gelisol

A soil order characterized by permafrost within two meters of the surface, common in Arctic and sub-Arctic regions.

Geomorphology

The study of landforms, their processes, history, and the influence of soil and geology on landscape development.

Germination

The process by which a seed begins to grow into a seedling under favorable conditions.

Gley horizon

A soil layer showing gray or bluish colors due to prolonged water saturation and reduced conditions.

Gleysols

Soils with permanent or near-permanent water saturation, typically with mottled or gleyed horizons.

Global warming potential (GWP)

A measure of how much heat a greenhouse gas traps in the atmosphere relative to carbon dioxide over a specific time period.

Grassed waterway

A natural or constructed channel planted with grass to safely convey runoff water and prevent erosion.