Brown usually means desert.
Brown usually means desert.
The Sahel isn't desert. It's grassland. You are asking the wrong question.
Actually, your question is an oxymoron. A desert is arid, not semiarid. A grassland would be semiarid.
It would be a semiarid grassland or steppe.
It would be brown and arid.
Grasslands generally receive about twice the amount of rainfall per year as a desert. Therefore, one would see much more plant life in a grassland.
Probably nothing would happen. The desert and grassland share a lot of plants and animals in common. The plants and animals would probably thrive as they would have access to more food and water.
Cows can be found in the Grassland, Forest, and Sub-Desert biomes.
If you replace it the desert wouldn't be the desert, it would have tons of trees and plants that need rich soil. Though, the desert heat would still dry up the soil and make it dry and cracked mud. So it's really no use trying to replace the desert's soil with grassland soil.
Since there is no such place as the Savanna Desert, I would have to choose the Mojave. The savanna is a grassland and not a desert. Savannas occur in parts of Africa, South America and North America.
The dominant plants of the desert biomes would depend on what desert you are referring to. In the Mojave, for instance, the more dominant plants would be cacti, mesquite trees and Joshua trees. In other deserts, only sand exists. The dominant plants of the grassland biomes is grass.
Here I'm just guessing, but I live about 1/2 mile from Rand-McNally's headquarters, and I like to think that I've absorbed something from their smokestacks through the years. Seems to me that a smart mapmaker, who wants his product to resemble reality in some sense, would want to show grasslands in green, like grass, and a desert in brown ... you know, like sand ?