| The oil development history of Dagang oil field is so long, the range of oil pollution soil islarge, so the oil field is typical area delegated oil pollution in proceeding of environmentaladministration. Phytoremediation of the oil pollution soil and the effect of soil rhizosphericmicroorganisms are the key aspects on running technology and the effect evolution, and thechange of soil rhizospheric microorganism is the important index for the evaluation. This studyused oil pollution soil in Dagang oil field as the typical study soil, based on investigating,districting and the potential risk assessment of oil pollution, it was used pot planting study methodand two types of plants as study materials to analysis the diversity of soil rhizosphericmicroorganism, the plants include tap root plant, such as cotton (Gossypium spp), morning glory(Pharbitis nil (Linn.) Choisy) and mirabilis jalapa (Mirabilis jalapa Linn) and fibrous root plant,such as wheat (Triticum aestivum L.), cabbage (Brassica oleracea), ryegrass (Medicago sativaLinn), Lucerne (Lolium perenne L.), the soil rhizospheric microganism community structureanalysis was used steaming-treating method normal plate counting method and phospholipid fattyacid (PLFA) profiles. The results were as followings: the polycyclic aromatic hydrocarbons (PAHs)pollution in most area of Dagang oil field soil belonged to middle level, and same part to highlevel. PAHs loss action of tap root plants was stronger than that of fibrous root plants. The soilrhizospheric microganism community structure of tap root plant was not so changed greatlycompared with the control treatment that there are no plants planting, but the fibrous root plantwas opposition; These results are important reference to select phytoremediation technology inDagang oil field and the similar areas, and provide important method for research on mechanismsof soil microbial ecology in oil contaminated soil. |
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