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Is farming a cause of desertification?

A major cause is unsustainable agriculture, a major consequence is the threat to food production. Cropland expansion and intensification of agriculture are among the drivers of land degradation processes that can lead to desertification.

What are the benefits of desertification?

Desertification diminishes biological diversity, a diversity which contributes to many of the services provided to humans by dryland ecosystems. Vegetation and its diversity are key for soil conservation and for the regulation of surface water and local climate.२००६ अक्टोबर १५

What country is most affected by desertification?

Africa is the continent most affected by desertification, and one of the most obvious natural borders on the landmass is the southern edge of the Sahara desert. The countries that lie on the edge of the Sahara are among the poorest in the world, and they are subject to periodic droughts that devastate their peoples.

What countries are at risk of desertification?

A recently published JRC study identified the following geographic regions as prone to desertification: north-eastern Brazil, south-western Argentina, the southern Sahel, Zambia and Zimbabwe, Sub-Himalayan India, and north-eastern China.२०१४ अक्टोबर २२

Is the Sahara desert spreading?

Over the past century, the Sahara desert has been expanding by more than 7,600sq km a year and is now 10% larger than it was in 1920. The creep has been particularly pronounced to the south, where it has spread into the Sahel by more than 554,000sq km over the same period.२०१९ सेप्टेम्बर ३

Is the Sahara growing?

First of all, the Sahara is not expanding into the rest of Africa. Drought in the Sahel in the 1970s and 1980s made it look like the desert was expanding, because the reduction of rainfall at the desert margin (the Sahel) caused a reduction in vegetation. It receives little rainfall because of where it’s located.२०१९ सेप्टेम्बर १८

How deep is the sand in Sahara?

The depth of sand in ergs varies widely around the world, ranging from only a few centimeters deep in the Selima Sand Sheet of Southern Egypt, to approximately 1 m (3.3 ft) in the Simpson Desert, and 21–43 m (69–141 ft) in the Sahara. This is far shallower than ergs in prehistoric times were.

When did the Sahara dry out?

about 13,000 years ago