Give a geographical reason for each of the following:
i. Alluvial soil is extremely fertile.
ii. Need for soil conservation.
iii. Reafforestatiom should be practiced extensively.
Answers
Explanation:
(d) Geographical reasons:
(i) Alluvial soil is extremely fertile because it is found to a depth of 500 m and rich in humus, lime and potash. (ii) There is a need for soil conservation because top soil that is eroded is the main feeding zone. With the increase in population the demand of crops is also increasing.
AnswEr:
i. Alluvial soil is extremely for soil because it is rich in various minerals such as potash, humans and lime. Moreover, it is cleyey in nature and has high water holding capacity. This makes it suitable for the cultivation of various types of crops.
ii. Soil conservation is necessary as the removal of the top soil layer results in loss of fertility, decreasing soil moisture, drying of vegetation and increase in the frequency of floods and droughts.
iii. Reafforestation should be practiced extensively in order to compensate for the large-scale deforestation occurring because of industrialisation and other factors, which would certainly result in soil erosion and land degradation.
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