中文摘要：

为了研究道路绿化植物对交通污染的生理响应,以大叶黄杨为试验材料,选择天津市典型交通污染区为采样地点,探讨了交通流量对单位叶面积滞尘量、抗坏血酸含量、相对含水量、叶片pH等的影响。结果表明：大叶黄杨单位叶面积滞尘量与交通流量呈极显著正相关（P〈0.01）;抗坏血酸含量与单位叶面滞尘量呈极显著负相关（P〈0.01）;叶片pH与单位叶面积滞尘量不显著相关（P〉0.01）;相对含水量与单位叶面滞尘量呈极显著正相关（P〈0.01）。长期的交通污染显著降低了大叶黄杨抗坏血酸含量,提高了相对含水量,而对叶片pH影响不大。

英文摘要：

In order to research the responses of road greening plant physiological to the traffic pollution,taking Buxus megistophyll as experimental material,choose Tianjin typical traffic polluted areas for sampling locations,the effect of the traffic flow on the unit leaf area dust catching quantity,the content of ascorbic acid,relative water content,pH value of leaves were disscussed.The results showed that Buxus megistophyll unit leaf area amount of dust and traffic flow showed significant positive correlation（P0.01）;ascorbic acid content and unit of foliar dust amount showed a significant negative correlation（P0.01）;leaf pH value and unit of foliar dust amount had no significant correlation（P0.01）;relative water content and unit of foliar dust amount showed significant positive correlation（P0.01）.Long-term traffic pollution significantly decreased the content of ascorbic acid in Buxus megistophyll,increased the relative water content and pH value for leaf had little effect.