Question

What is the differences between zonal and interzonal solis?

Answer 1

Zonal Soils (Order):

1. Desert Soils (Group):

In arid regions (sub-order), where it is usually dry and hot with high temperature and an extremely low rainfall (less than 5 inch) and there is an almost complete absence of vegetation. Due to very low rainfall, leaching is almost absent. Owing to high evaporation, salts usually ‘travel upwards and accumulate in the surface layer.

2. Grey Soils:

In arid regions, the rainfall is low (5-15 inch) it is enough to cause percolation and movement of salts. Vegetation being scanty, a layer is usually absent. As leaching is poor alkaline salts accumulate in the B-horizon. Horizon-B acquires a grey colour. Clay formation is very meagre. Water table is usually very deep.

Intra-Zonal Soils:

The intra-zonal soils possess, in general, the characteristics which mark them out as distinct and different from zonal soils. In other words, the effect of the local factors, topography, drainage etc., is superimposed on that of the active soil forming agents.

The important intra-zonal soils are:

(1) Saline and alkaline soils

(2) Rendzina soils

(3) Bog or marsh soils

Answer 2

Answer:

Zonal soils are fully matured soils which have developed under the conditions of good soil drainage over a long period of time. Azonal soils do not have well developed soil horizons but there is uniformity in the soils from top toottom. Intrazonal soils are those that are formed in waterlogged areas.

Explanation:

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