不過當你唔只睇個草原 睇下土壤嘅表面 你會發現草原裡面大部份嘅土壤 除咗光禿禿之外 ， 就只有一層藻類遮住 亦都係咁加快咗水份流失同蒸發
But when you look at the surface of the soil, you will find that most of the soil in the grassland is only covered by a layer of algae, which accelerates water loss and evaporation