郑州市交通岛绿地植物物种丰富度调查及园林景观分析

Investigation on Plant Species Abundance and Landscape Architecture Analysis of Traffic Island Green Space in Zhengzhou City

交通岛绿地是城市道路绿地的重要组成部分。本文在实地调查郑州市20条道路交通岛绿地的基础上,对新老城区交通岛绿地植物物种丰富度和园林景观进行了分析。结果表明:⑴随着交通岛面积的增大,物种丰富度增加;⑵新城区交通岛绿地植物分布较均匀,但整体应用的植物种类没有老城区交通岛绿地丰富;⑶导流岛、可做安全岛的导流岛、中心岛的加权平均物种数量依次减小,物种丰富度逐渐降低;⑷交通岛绿地景观中,物候期交错,季相变化丰富;层次分明,具有群落感;植物配植方式多样,景观效果较好;适地适树。并针对存在的问题提出了如下建议:结合周边环境宜增强植物景观地域特色;植被景观设计宜注重行人行车安全;应考虑建设节约型交通岛绿地。

Traffic island green space was an important part of urban road green space. Based on the field investigation of the traffic island green space on 20 roads of Zhengzhou, the paper analyzed the plant species abundance and landscape architecture of the traffic island in the old and new city areas. The results showed that：（1） with the increase of traffic island area, the plant species abundance increased.（2）The traffic island green plants which in the new area of the city were more uniformly distributed, but the plant species abundance was lower than that in the old areas.（3） The weighted average of the species number of diversion islands,diversion islands which can be used as safety islands and center islands decreased in sequence, and the plant species abundance was reduced gradually.（4） Plants in traffic island green space had variable phenological phase, rich seasonal aspect changes, distinct gradation and strong sense of community. The plant arrangement was diverse, the landscape effect was good, and the plant species selecting in different site was suitable. The following suggestions were put forward for the existing problems： the regional features of plant landscape need to be enhanced combining with the surrounding environment, pedestrian and driving safety need to pay more attention in the vegetation landscape designing, and the conservation-oriented traffic island green space constructing need to be considered.