A fertile area located in a desert area. An oasis is the product of fresh water being available from underground reservoirs.
In some oases the ground water is close enough to the surface to allow plant roots to reach it. In other oases, the ground water reach the surface and forms springs or pools.
Some oasis are only partially oasis, in the sense that they have underground supplies of water together with water coming from rivers or lakes, like in Fayoum Oasis, Egypt. Modern times have introduced pumps in many oases, either to expand agriculture into infertile land or as a measure to keep up supplies where falling ground water has stopped the natural supply of water.
Many oases are very fertile, due to constant supplies of water and hot climate with much sun. The actual agriculture in oases call for a great deal of human engineering, especially with irrigation and the removal of salines.
A fertile area located in a desert area. An oasis is the product of fresh water being available from underground reservoirs.
In some oases the ground water is close enough to the surface to allow plant roots to reach it. In other oases, the ground water reach the surface and forms springs or pools.
Some oasis are only partially oasis, in the sense that they have underground supplies of water together with water coming from rivers or lakes, like in Fayoum Oasis, Egypt. Modern times have introduced pumps in many oases, either to expand agriculture into infertile land or as a measure to keep up supplies where falling ground water has stopped the natural supply of water.
Many oases are very fertile, due to constant supplies of water and hot climate with much sun. The actual agriculture in oases call for a great deal of human engineering, especially with irrigation and the removal of salines.
