What is the catena concept?

The catena concept originated in Central Uganda, by chemist W.S. Martin to describe a hill slope sequence at the Bukalasa research station. The term catena (Latin: chain) was first coined by scientist Geoffrey Milne to describe these soil-topography units.

What is a Toposequence?

Noun. toposequence (plural toposequences) (soil science) A sequence of soils that are characteristic of a topography.

What is the difference between soil profile and soil catena?

A soil catena is a sequence of different soil profiles that occur down a slope. They occur on hill slopes where the geology is uniform and there is no marked difference in climate from the top to the bottom of the slope.

Who created soil catena?

The catena as presented by Milne (1936a, b) considered the interlocking of soils on a landscape. The word itself is derived from the latin word for chain.

What is the main factor influencing the development of soil catena in East Africa?

Climate
Climate: Influences the development of soil catena in the following ways: • Heavy rainfall encourages erosion on the upper slopes (waxing slope) and deposition on the lower slopes and valley bottom. Heavy rainfall also encourages leaching leading to the development of lateritic soils along the waxing slope.

What is the difference between Eluviation and Illuviation?

In soil science, eluviation is the transport of soil material from upper layers of soil to lower levels by downward percolation of water across soil horizons, and accumulation of this material (illuvial deposit) in lower levels is called illuviation.

Why is a Toposequence not a Catena?

Toposequence presently carries with it a morphologic connotation; a change in colors, predominantly a change in grayness, that is related to relative elevation and thus to changes in hydrology. Catena on the other hand carries with it a process-response connotation.

What is soil Catena in geography?

A catena is the sequence of soils from hilltop to valley floor. The soil down a hill slope is rarely uniform. Soil eroded from the top of the slope tends to accumulate near the bottom.

What is soil Solum?

The solum (plural, sola) in soil science consists of the surface and subsoil layers that have undergone the same soil forming conditions. The base of the solum is the relatively unweathered parent material.

What is the meaning of soil catena?

What factors influence soil formation?

The five factors are: 1) parent material, 2) relief or topography, 3) organisms (including humans), 4) climate, and 5) time. If a single parent material is exposed to different climates then a different soil individual will form.

What is illuviation in geography?

illuviation, Accumulation of dissolved or suspended soil materials in one area or layer as a result of leaching (percolation) from another. Usually clay, iron, or humus wash out and form a line with a different consistency and color. These lines are important for studying the composition and ages of rock strata.