FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Desertification usually occurs when
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humans leave an area alone to undergo secondary succession
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soil productivity decreases due to drought and poor farming practices
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winds carry large amounts of sand from nearby deserts
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irrigation water is continually used in arid regions of the country
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Explanation:
Detailed explanation-1: -The low water holding capacity of the soil, migration of water and nutrient into the deeper layer and excess surface runoff are equally responsible for water stress condition. The long-term drought can cause desertification, degradation of land, and affect the soil ecosystem.
Detailed explanation-2: -Policies favoring sedentary farming over nomadic herding can contribute to desertification. The majority of dryland areas (65%) are rangelands that are more suited to sustainable grazing than crop production.
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