What are the three main causes of desertification in Africa?

Answer 1

Subtle changes in the Earth's orbit (axis tilt shifted from 24.14 to 23.45 degrees) contributed to the desertification of the area now known as the Sahara between 3,600 to 6,700 years ago. The climate changes were strongly amplified by resulting atmospheric and vegetation feedback in the subtropics.

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Answer 2

how u can doin that '

PINK: -> "Some causes of desertification on the Sahel include that the African people allowed overgrazing of vegetation by livestock exposes the soil.

2. Animals also trample the pace of desertification.

3. When farmers clear the land to plant crops, they expose the soil to wind, which can cause erosion.

4. Widespread drilling and more irrigation increase salt levels in the soil, which prevent the growth of vegetation."

Increasing desertification

**Sorry if i misspelled some stuff!

Answer 3

The Eden FoundationLocation: Nigeria

NGO/GO: Non Government Agency

- Provide funding for farmers to plant perennials among their crops on their fields. These stabilize the soil, holding it together and so preventing erosion. They also shelter the crops from wind. As a bonus they have fruit so there is extra produce.

- Plant strips of trees, which hold the soil in place and create a wind break so that more soil isn't eroded.

- Stone walls with small cracks in them allow the water to grow through so that the plants get an even spreading of water. The leaf litter is trapped on the other side for farmers to rake up and spread around crops. This prevents evaporation and when the leaves decompose they return valuable nutrients to the soil, preventing soil degradation.

The Government(Niger):Location: Niger

NGO/GO: The Government

- Women enlisted by the government of Niger plant shrub branches near Soubdou, securing them with grass to create grids of natural Fencing that keep sand from blowing onto land used for crops and grazing.

- For each acre fenced, the group of women receives $80. Since the drought years in the 1980s, Sahelians have reclaimed damaged land by stabilizing dunes, cultivating trees, building rock walls to halt erosion, and sowing seeds in pits dug to catch rain.

Answer 4

The soil is of poor quality and dry conditions result in even fewer crops