Map Knowledge: Proportion of land salinized due to irrigation
When agricultural land is under intensive/wrong irrigation or the rise of the sea level due to global warming in coastal areas it often leads to salination of the ground. " Salinization is the increase of salt concentration in soil.
Wide areas of formerly arable land become increasingly saline. Since most farmers around the globe are unfamiliar with saline agriculture. On top, ground water/rivers etc., a major resource of drinkable water turn saline. As a result, farmers feel forced to migrate and/or live with famine and poverty.