干旱、半干旱地区草原生态遭到破坏（如过度放牧或垦荒），致使草原产草量下降，优良牧草减少，土质恶化，甚至逐渐沙化和盐渍化的现象pasture deterioration

• 工业文明产生了土壤沙化、草场退化等不少严重的生态后果。

  Industrial civilization has had many serious ecological consequences such as desertification and pasture deterioration.

• 常住牧民过度采伐放牧对草场退化造成了一定的影响。

  Overclearing and overgrazing caused by settled pasturalists has had a certain influence on pasture deterioration.