How the equatorial tropics can be free of loess?

The equatorial tropics are typically characterized by high levels of rainfall and dense vegetation, which inhibit the conditions necessary for loess formation. Loess is primarily created from wind-blown silt in arid and semi-arid regions, where vegetation cover is sparse and soils are dry and easily eroded. In contrast, the humid, stable climates of the tropics promote soil development and biological activity, leading to the formation of more fertile, organic-rich soils rather than the accumulation of loess. Thus, the environmental conditions in the equatorial tropics do not favor the presence of loess deposits.