Waterlogging

Soaking of agricultural land caused by a rising water-table [the surface of groundwater in the soil] or excessive irrigation. [Waterlogging] compacts soil, deprives roots of oxygen and contributes to salinization.

Source: Green 4 Green Glossary 

Source: British Seed Houses (sorry, no weblink available)

Salinization

GreenFacts Summary on Desertification:

• 4.3 How can land use affect desertification?

Español: Anegamiento
Français: Engorgement (des sols)

Desertification