内蒙古地区,大多处于高寒而干旱的地带,造林绿化的主要限制因素是缺水.因此,许多地方每年虽植树的数量不算少,可是成活率却不很高,甚至出现“只栽植不成林”的现象。造成上述不良后果的原因,固然与选择树种不 In Inner Mongolia, most of the areas are in the alpine and arid regions, and the main limiting factor for afforestation is lack of water, so in many places, although the number of trees planted in each year is not small, the survival rate is not high, and even “no planting only” The phenomenon. Cause of the bad consequences of the above reasons, of course, with the choice of species not