在丘陵和山区进行造林作业设计,要进行林班、小班的区划工作。原则上规定,区划林班按自然地形如河流、道路、山脊、山谷等地形或社队行政以及社队林场的界线进行划分;小班区划原则上规定按土地种类、荒山、荒地、采伐 Afforestation operations in the hills and mountains design, to be Lin class, small class zoning work. In principle, the zoning forest classes are classified according to the topography of the natural terrain such as rivers, roads, ridges and valleys or the boundaries of commune and commune administrations and the boundaries of social-forestry farms. In principle, the zoning of small-scale divisions provides for the classification of land by types of land, barren hills,