Den största faktorn för kontinental uttorkning är grundvattenförlust.

 

Lake Mead 

Tre fjärdedelar av världens befolkning, eller cirka 6 miljarder människor, bor i områden där sötvattnet har minskat sedan 2002.

Vissa delar av planeten blir fuktigare, särskilt i tropikerna, men de uttorkande delarna torkar snabbare än de allt fuktigare delarna blir våta.

De uttorkande delarna sprider sig också och vinner ungefär två Kaliforniens mark varje år och slås nyligen samman till "mega-uttorkande" regioner som sträcker sig över stora kontinenter.

Den största täcker tre kontinenter, från de brittiska öarna, Europa och Nordafrika i väster hela vägen till Kina och Malaysia i öster.

Den största faktorn för kontinental uttorkning är grundvattenförlust.

Detta är inte bara ett amerikanskt problem: Grundvattensförluster är utbredda i Nordafrika, Mellanöstern, den tibetanska platån och norra Kina.






America Is Using Up Its Groundwater Like There’s No Tomorrow

 
Jakarta, the fastest-sinking megacity on the planet.








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