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受寒冷的自然条件的限制,黑龙江可用的绿化材料种类较少,道路绿化中由于资金、土壤、及绿化技术的限制,可用的种类就更少,常用的总是杨、柳、榆、丁香、云杉、樟子松等几个树种,多数公路绿化景观雷同。边坡绿化所用的植物种类也极为有限,常用的只有地锦、山葡萄、早熟禾草等几个种类。在绿化中能否体现植物色彩的季相变化是衡量绿化效果的一个重要指标,黑龙江绿化中彩化植物种类缺乏,观叶树种少,甚至没有。有些公路为了
Due to the cold natural conditions, there are few kinds of greening materials available in Heilongjiang Province. Due to the limitation of funds, soil and afforestation technology in the greening of roads, there are fewer kinds of greening available. The commonly used species are poplar, willow, elm, Spruce, Pinus sylvestris and several other species, most of the same green road landscape. Slope greening plants are also very limited species, commonly used only in Kam, mountain grapes, bluegrass and several other species. In the afforestation can reflect the seasonal changes in plant color is a measure of the effect of greening an important indicator of the lack of species of plants in Heilongjiang green, foliage trees with little or no. Some roads in order