Desertification can be slowed or stopped by protecting the native plants in the area, slowing or stopping land use that leads to erosion, and careful use of land for grazing rather than farming. Desertification is most frequently caused by overuse of water resources in an area, combined with the removal of plant matter. Plants are essential to preventing desertification, as they hold the fertile top soil in place.Know More
Desertification is easier to slow down and prevent than it is to reverse. Some methods of reversal of desertification involve replanting of specific species and the establishment of seed banks to make sure that plants native to the region survive. In areas that have undergone massive deforestation, replanting of trees helps reduce desertification. However, prevention of deforestation is much more effective, as reforested areas frequently have lower biodiversity and are less robust.
One interesting method for slowing desertification involves livestock management. This method has been championed by Allan Savory and involves the use of livestock to rehabilitate the land. In short, during the dry season in areas prone to desertification, the plant matter and grasses tend to dry out and die. Allowing these plants to be eaten by grazing animals keeps them from blocking sunlight and preventing new grasses from growing in their place after the next rainfall.Learn more about Environmental Science
Without the ozone layer, the sun's ultraviolet radiation would negatively affect life on land and in the water, leading to mass extinction. The ozone layer is a protective area of the Earth's stratosphere that absorbs between 97 and 99 percent of the sun's UV radiation, allowing life to exist.Full Answer >
Deforestation reduces the recycling of water from land to the atmosphere and back by up to 75 percent. The hydrosphere consists of all the various forms of water on the Earth, and deforestation radically alters the Earth's water content by reducing evaporation and soil moisture.Full Answer >
Bodies of water heat up and cool down at a slower pace than land because they need more energy from the sun to gain a higher temperature. They are typically colder later into the season and warmer than nearby land masses as the cold season draws near.Full Answer >
To prevent water pollution, avoid overwatering lawns and gardens, use native plants that require less water, and apply natural fertilizers that retain water and moisture. At home, avoid flushing foreign objects and disposing of harmful chemicals, paints, oils and cleaning solvents down drains or sinks.Full Answer >