Your question: What is the major cause of desertification in Africa?

How does desertification occur in Africa?

Fire is a primary cause of desertification in the Sahel region of North Africa, where the degradation of drylands is especially pronounced. The degradation of drylands in Africa is forcing people who can no longer make a living off the land to move to urban areas.

What is the main causative factor of desertification?

Overgrazing: Overgrazing is one of the major factors of land degradation or desertification.

What are the main causes of desertification in Africa quizlet?

This is caused by several factors- drought, overgrazing of farm animals, improper farming techniques, and the cutting down of trees. The mass destruction and cutting down of trees and other vegetation.

How can desertification be prevented?

Strategies to reduce desertification

  1. Planting more trees – the roots of trees hold the soil together and help to reduce soil erosion from wind and rain.
  2. Improving the quality of the soil – this can be managed by encouraging people to reduce the number of grazing animals they have and grow crops instead.

Why is desertification so bad in Africa?

It has been estimated that 319 million hectares of Africa are vulnerable to desertification hazards due to sand movement. … Deforestation exposes the soil to high temperatures which break down the organic matter, increase evaporation and make the soils vulnerable to erosion.

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How can desertification affect humans?

Land degradation and desertification can affect human health through complex pathways. As land is degraded and deserts expand in some places, food production is reduced, water sources dry up and populations are pressured to move to more hospitable areas. … the spread of infectious diseases as populations migrate.

What is the impact of desertification?

Desertification has caused major environmental and socioeconomic problems in many arid and semiarid areas of the world1. It causes soil degradation and severely reduces potential land productivity24, which causes degradation of the ecosystem and its associated ecosystem services.

Which is a cause of desertification?

‘Climatic variations’ and ‘Human activities’ can be regarded as the two main causes of desertification. removal of the natural vegetation cover(by taking too much fuel wood), agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.

Which is a cause of desertification quizlet?

What causes desertification? Over cultivation, overgrazing, deforestation, slash and burn, climate change. … Climate gets hotter, less rainfall, less water supply, less vegetation grows, soil becomes bare and land is infertile so the land becomes a desert.

What are the harmful effects of desertification quizlet?

Change in ecological system, effect on human activities, decrease in crop yield, sandstorms and flooding. Desertification not only affects the local people, but also the rest of the world. Supplies of certain foods may be affected by desertification.