Write a paragraph on desertification. (include the definition, cause, consequences, how we can prevent it and how we turn desertified land back to healthy land).
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Answer:
Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid.[2] It is the spread of arid areas caused by a variety of factors, such as climate change (particularly the current global warming)[3] and overexploitation of soil as a result of human activity.[4]
U.S. Department of Agriculture map from 1998 showing global desertification vulnerability
Lake Chad in a 2001 satellite image, with the actual lake in blue. The lake lost more than 90% of its surface area between 1987 and 2005.[1]
Throughout geological history, the development of deserts has occurred naturally. In recent times, the potential influences of human activity, improper land management, deforestation and climate change on desertification is the subject of many scientific investigations. [5] [6] [7] [8]