Question

i) What are the three types of alluvial soil. Describe any one of
them. Mention two characteristics of igneous rock.
ii) Discuss the natural causes for soil pollution. Mention two
effects of soil pollution.

mean by local time?​

Answer 1

Answer:

i) What are the three types of alluvial soil. Describe any one of

them. Mention two characteristics of igneous rock.

ii) Discuss the natural causes for soil pollution. Mention two

effects of soil pollution.

mean by local time?

Explanation:

Alluvial soils deposited by the river systems are highly fertile and underlain by extensive aquifers resulting in the development of an extensive groundwater network for irrigation.

From: Advances in Agronomy, 2012

Related terms:

Cultivar Phyllis Ravines Wetlands Soybeans Habitats Soils TypesAlluviumShaleFloodplains

Alluvial Soil

Alluvial soil is found in the valleys of the Terai region and in the middle hill valleys around Kathmandu and Pokhara. The valleys lie between the Siwalik and Mahabharat hills which widen out in places to form flat fertile valleys called Dun valleys. New alluvial soil with more sand and silt than clay is being deposited in the flood plain areas along the river courses. Alluvial soil is also found in the higher areas above the flood plain covering a greater part of the Terai. The nutrient content of new alluvial soil is fair to medium depending on how long it has been cultivated. Conversely, the nutrient content of old alluvial soils is very low.