摘要：城市交通排放的汽车尾气中含有上百种不同的化合物，其中的污染物有固体悬浮微粒、一氧化碳、二氧化碳、碳氢化合物、氮氧化合物、铅及硫氧化合物等，对环境及人类健康具有极大的危害。以校园内车流量较少处的土壤和校园外交通主干道附近的土壤为研究对象，研究了交通污染对土壤的化学性质、土壤酶活性以及土壤微生物的影响。结果表明：交通污染对土壤的pH值、脲酶活性存在一定的影响，对速效磷、碱解氮、磷酸酶、过氧化氢酶活性和土壤中微生物真菌、放线菌、细菌的数量影响比较大。速效磷与磷酸酶活性、碱解氮与脲酶活性的变化呈正相关，土壤酶活性与土壤微生物之间的变化密切相关。

关键词：交通污染、化学性质、土壤酶活性、土壤微生物

Abstract：Urban transport emissions of automotive exhaust contains hundreds of different compounds, including the pollutant has the solid suspended particles, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead and sulfur oxides, etc., has great harm to the environment and human health. With less traffic in the soil on campus and off campus roads nearby soil as the research object, studies the traffic pollution on soil chemical properties and soil enzyme activity and soil microorganism. The results show that the traffic pollution have a certain influence on soil pH, the urease activity, but the effects on available phosphorus, alkaline hydrolysis nitrogen, phosphatase, catalase activity and the number of soil microorganism, bacteria, fungi, actinomycete is larger. Available p and phosphatase activity, alkali solution nitrogen and urea enzyme activity changes were positively correlated, soil enzyme activity and soil microorganism changes are closely related.

Keywords：Traffic pollution； Chemical properties； Enzyme activity； Soil microorganisms