Why can Desertification occur?

-Population Growth: Places where it hosts Mining and Tourism means the Environment has more Pressure for certain Resources, like Water and Wood -Removal of Wood: Wood in some Places is used for Cooking, so Increase in Population means Less Wood, which means the Roots of the Trees doesn't hold the Soil Together -Overgrazing: Overgrazing from Cattle or Sheep just has the Soil open for Erosion -Climate Change: Climate is getting Warmer, and Drier meaning Less Rain for the Soil to use