半干旱区沙地矿区植被恢复技术研究

Vegetation Restoration Technologies in Mining Area of Semiarid Sandy Land

本文以榆林沙地矿区为例,通过3个试验研究,探讨了半干旱区沙地矿区植被恢复技术。结果为引进樟子松、沙地柏更新改造原有植被,可增加防护植被类型,改变林分结构;以北沙柳为例,平茬可以更新加快灌木生长发育,改变衰老长势,春季平茬效果好于秋冬季;沙地柏、紫穗槐、北沙柳、樟子松等林分消耗利用水分较少,可作为较好的防风固沙林类型,而塔落岩黄耆、柠条、沙蒿耗水量较大,不适宜大面积营造。

Mining place in sandy area of Yulin was applied as an example to study the vegetation restoration technology through three experiments.Pinus sylvestris var.mongolica and Sabina vulgaris were introduced for afforestation to renew and transform the original vegetation,and increase the types of protective vegetation and change the stand structure.Salix psammophila was stumped as flat stubble to renew and accelerate the growth and development and the effect of flat stubble in spring is better than that in autumn and winter.Sabina vulgaris,Amorpha fruticosa,Salix psammophila,Pinus sylvestris var.mongolica.Are good species for windbreak and sand-fixing forest since the water consumption and utilization of stand is more balanced,while Hedysarum fruticosum var.leave,Caragana microphylla and Artemisia desertorum consume more water and are not suitable for large-scale plantation.