Over-grazing and irrigation methods that wash away topsoil were to blame for some of the damage, experts said. Building developments and climate change were doing the rest.

• 专家指出；因过度放牧或将表土层完全冲刷的灌溉方式都要对土地沙漠化负责.；当然房屋开发和气候变化也逃脱不了干系