natural vegetation degradation

• 天然植被退化

natural vegetation degradation的用法和样例：

例句

1. This paper presented a method to evaluate vegetation degradation in semi-arid and semihumid region.
   提出了一种适用于半干旱半湿润地区的植被退化评价方法。
2. They also underline the emissions reduction potential of restoring vegetation on degraded watersheds and pasture.
   他们还强调，恢复植被退化的集水区和牧场来减少碳排放。