1. 同时为了稳定边界，往往实行军屯，并大批移民实边，毁林垦地，大片森林毁于一旦。战区人民为躲避战祸，举家迁入深山老林，使高山邃谷中的森林也惨遭破坏。
The multifarious military activity have very big influence to mountain Guan Cen, the forest area in river Fen upper stream, cause the forest of that region becomes less much.