摘要：城市交通排放的汽車尾氣中含有上百種不同的化合物，其中的污染物有固體懸浮微粒、一氧化碳、二氧化碳、碳氫化合物、氮氧化合物、鉛及硫氧化合物等，對環境及人類健康具有極大的危害。以校園內車流量較少處的土壤和校園外交通主干道附近的土壤為研究對象，研究了交通污染對土壤的化學性質、土壤酶活性以及土壤微生物的影響。結果表明：交通污染對土壤的pH值、脲酶活性存在一定的影響，對速效磷、堿解氮、磷酸酶、過氧化氫酶活性和土壤中微生物真菌、放線菌、細菌的數量影響比較大。速效磷與磷酸酶活性、堿解氮與脲酶活性的變化呈正相關，土壤酶活性與土壤微生物之間的變化密切相關。

關鍵詞：交通污染、化學性質、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