HORTICULTURE SCIENCE
GENERAL AGRICULTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An increase in the eating of desserts
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A decrease in population in desert areas
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The degradation of soil in semi-arid regions
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Droughts in tropical regions
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Detailed explanation-1: -In general, desertification is caused by variations in climate and by unsustainable land-management practices in dryland environments. By their very nature, arid and semiarid ecosystems are characterized by sparse or variable rainfall.
Detailed explanation-2: -’Climatic variations’ and ‘Human activities’ can be regarded as the two main causes of desertification. removal of the natural vegetation coverby taking too much fuel wood, agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.
Detailed explanation-3: -Soils in semiarid regions have frequently been degraded by historical land use, resulting in low soil organic carbon (SOC) content and poor structure. Major threats to soils in semiarid regions include erosion, salinity, and degradation due to human activities (FAO, 2016).
Detailed explanation-4: -Desertification is the degradation process by which a fertile land changes itself into a desert by losing its flora and fauna, this can be caused by drought, deforestation, climate change, human activities or improper agriculture.