封山育林是恢复和发展森林资源,改善生态失调的一项行之有效的措施。封山育林具有省工、省力、投资少、见效快的特点。封山育林能够因林因地制宜划出一定范围,采取短期或长期的封山、改造、育林,把有希望恢复成林的地方围封起来,用林学措施,将原来残破的、低价值林分以及散生林木、灌木,在人为的保护下,使之迅速成林。 Closing hillsides for afforestation is an effective measure to restore and develop forest resources and improve ecological imbalances. Hill closure Yushan with labor, labor-saving, less investment, quick and efficient. Closing hillsides for afforestation can draw a range of forests according to local conditions and adopt short-term or long-term closure, transformation and cultivation of trees, enclose areas where hopeful forests can be restored, and use forestry measures to separate the original low-value forest and scattered Trees, shrubs, under the protection of man-made, so that the forest quickly.