平原沙荒宜林地主要分布在河流两岸的河漫滩地上,是我省主要用材林基地之一。一般地形平坦,在风沙为害严重的地方,也出现有沙丘、沙埂等微起伏地形。这些地方因受土壤沉积时期和流水沉积规律的影响而变化较大,有时局部会出现几种质地不同或土体构型不同的土壤(质地指土粒的粗细及组成比例,土体构型指土壤质地层次的垂直变化)。质地粗沙性强,多为中细沙、细沙、沙壤,部分为轻壤或中沙、粗沙;土质疏松,结持力弱,结构 The plain sandy wasteland forest is mainly distributed in the river floodplain on both sides of the river, is one of the main timber forest base in our province. In general flat terrain, where the sand damage is serious, there have been dunes, sand ridges and other micro-undulating terrain. Due to the influence of sedimentation time and sedimentation of sediment, these places vary greatly. Sometimes, there are some kinds of soils with different textures or different soil structures (texture refers to the thickness and composition ratio of soil particles, Vertical change of soil texture level). The coarse sand texture, mostly in the fine sand, fine sand, sandy soil, part of the light or medium sand, coarse sand; loose soil, weak holding capacity, structure