Dear Ali,
There are many causes of soil desertification.
Deforestation, overgrazing, poor irrigation practices, poor agricultural practices, poor management of water and plants, population displacement, loss of soil fertility, erosion, soil pollution, desert advances, global warming.
With my best regards
Prof. Bachir ACHOUR
Dear Mohamed,
Thank you very much for your appreciation.
With my best regards
Prof. Bachir ACHOUR
Desertification is a type of land degradation in which relatively dry area of land becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife. It is caused by a variety of factors, such as through climate change and through the overexploitation of soil through human activity. When deserts appear automatically over the natural course of a planet's life cycle, then it can be called a natural phenomenon; however, when deserts emerge due to the rampant and unchecked depletion of nutrients in soil that are essential for it to remain arable, then a virtual "soil death" , which traces its cause back to human overexploitation.
For more details about your question , you can visit the following link:
https://en.wikipedia.org/wiki/Desertification
Please have a look at this useful researchgate link also.
https://www.researchgate.net/publication/302587271_Desertification
Chapter Desertification
It may caused due to deforestation, over grazing, faulty land use, soil erosion by water and wind and adverse climatic factors.
You are right , Ken in pointing out that climate change must be held responsible, together with human activities, such as construction of dams etc, for the change of water resources, in particular, the decreasing precipitation in a region.
https://www.kcl.ac.uk/projects/desertlinks/downloads/deliverables/Deliverable%201.2b_en.pdf
http://www.un.org/esa/agenda21/natlinfo/countr/israel/desertification.pdf
http://www.un.org/esa/agenda21/natlinfo/countr/israel/desertification.pdf
Please see the following link. it may be helpful.
http://desertificationb.tripod.com/id3.html
Thanks.
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