How are the land areas different in urban and rural areas?

Rural areas and the urban areas actually have a similar kind of land but the only difference that can be made between two is fertile or not fertile.The urban lands are mostly cemented and less fertile but nowadays there is actually no land there to see in urban areas and the only reason for fall in underground water level.
The rural on the other hand actually have open land pieces through which the water can penetrate into the ground.The rural lands are more fertile than the urban land.