Bioremediation of the oily soil in the vadose zone involves three aspects: the petrol-degrading microorganisms, the biodegradabi1ity of the petrol pollutants and the environment of the soil.

• 摘要包气带油污土层的生物修复涉及到石油降解微生物、石油污染物的可生物降解性和土壤环境三个方面。