东部浅山是我省造林的重点地区。近年来,造林面积正不断扩大。在年降水量较多的地方,现在保存的主要林分,为青杨林或青杨黑刺林,其中分布在水分条件较好的侵蚀沟坡和沟底上的,一般都能郁闭成林,起到了改善当地生态条件,减少或完全控制水土流失与涵养水源的作用,发挥了一定的生态效益和社会效益。但从整个浅山区干旱缺水这一主要问题来看,沟坡上的青杨林或青杨黑刺林,并非最佳的林分结构。因此,有必要予以更新改造,改纯林或乔、灌混交为针阔混交,使之林分组成更符合森林的演替 Eastern shallow mountain afforestation in key areas in our province. In recent years, afforestation area is constantly expanding. In areas where the annual precipitation is relatively high, the main forest now preserved is the Populus simonii or Populus simonii forest, which distributes in the erosion gully and the ditch bottom with good water conditions, Forest has played a role in improving local ecological conditions, reducing or completely controlling soil erosion and water conservation, and has played a certain ecological and social benefits. However, from the perspective of drought and water shortage in the shallow mountainous area, it is not the best stand structure for Populus euphratica or Populus simonii on the slope. Therefore, it is necessary to be renovated and rehabilitated, pure forests or Qiao, irrigation and coning mixed coniferous and broad, so that the forest is more consistent with the forest succession