林内枯倒木和根桩经过长时间在动植物机体和物理化学过程作用下便开始分解。高海拔区的云杉林的种子在这样的枯倒木上容易发芽成苗。在中欧山地森林培育中人们把这种方法称为倒木更新。这种自然更新方法受到中欧林业同行的注意，并被应用于欧洲云杉林的更新。欧洲云杉被广泛栽 In the forest, fallen wood and root piles begin to decompose after a long period of time under the action of the animal and plant tissues and physicochemical processes. Spruce forest seedlings in high altitude areas tend to germinate on such fallen trees. In the Central European mountain forest cultivation, people call this method an inverted wood renovate. This method of natural regeneration has drawn the attention of forestry leaders in Central Europe and has been applied to the renewal of European spruce forests. European spruce is widely planted