摘要
对郑州铁路局管辖范围内陇海线、京广线典型绿化植物大叶女贞、侧柏、石楠等的叶片滞尘量,及其植被带内的PM_(10)、PM_(2.5)与空气负离子浓度进行了测定.结果表明:铁路绿化带植被具有滞尘、降低其植被带内空气中的PM_(10)与PM_(2.5)浓度、提高负离子的正效应;常绿树种石楠、女贞的滞尘量较大,侧柏的滞尘量较小;但各植被带内空气中的PM_(10)、PM_(2.5)以及负离子浓度多无显著性差异.认为在保证行车安全的前提下,根据具体情况选择不同植物进行绿化设计与建设,可达到环境改善的目标.
Beside the Lanzhou-Lianyungang Railway and the Beijing-Guangzhou Railway under the jurisdictionof Zhengzhou Railway Bureau,some typical greenery plant of Ligustrum compactum,Platycladus orientalis and Photinia×fraseri are selected to determine its foliar dust detention and its vegetation zone of PM_(10),PM_(2.5) and negativeair ion concentration. The results show that:the railway greening vegetation has the positive effect to reduce the dust,PM_(10) and PM_(2.5) concentration and increase the negative air ions concentration. We find the evergreen species of Photinia×fraseri and Ligustrum compactum have a higher foliar dust detention,while the Platycladus orientalis issmaller,but the PM_(10),PM_(2.5) and negative air ion concentration have no significant difference among most vegetationzone. It is believed that under the premise of ensuring the driving safety,selecting different plants for greening designand construction according to specific conditions can achieve the goal of environmental improvement.
出处
《河南科学》
2017年第12期1952-1956,共5页
Henan Science
基金
郑州铁路局科技研究开发计划(2015Q13)
