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首页> 外文期刊>Current Journal of Applied Science and Technology >Bacteriological, Chemical and Soil Enzyme Activity Profile of Coastal Wetland Soils Exposed to Crude Oil Exploration in Akwa Ibom State, Nigeria
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Bacteriological, Chemical and Soil Enzyme Activity Profile of Coastal Wetland Soils Exposed to Crude Oil Exploration in Akwa Ibom State, Nigeria

机译：尼日利亚AKWA IBOM州沿海湿地土壤暴露于原油勘探的细菌学，化学和土壤酶活性剖面

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Coastal wetland soils exposed to crude oil exploration activities were assessed using microbiological and chemical procedures in the wet and dry seasons. The bacteria isolated from the impacted wetland soils included species of the genera Acinetobacter, Alcaligenes, Citrobacter, Azotobacter, Bacillus, Cellulomonas, Flavobacterium, Micrococcus, Proteus, Pseudomonas, Sarcina, Serratia and Staphylococcus. In addition, species of the genera Nitrobacter, Nitrosomonas and Rhizobium were isolated from the non-impacted soils. Total heterotrophic bacterial counts (THBC) in the wet and dry seasons ranged from 7.1 ± 0.4 to 8.6 ± 0.2 Log??CFU g￣1 and 3.7± 0.04 to 5.4 ± 0.1 Log??CFU g￣1 for the control and impacted soils respectively. The counts in control was 1.6 to 1.9 times higher than the impacted soil and the difference was significant at p = 0.05. The nitrifying bacteria (NB) associated with the impacted soil were the most adversely affected. There was 2.11 to 139 times higher concentration of the different heavy metals in the impacted soil than the control and 1.13 to 1.26 x 10~(4) times higher Total petroleum hydrocarbon in the impacted soils in both seasons and these differences were significant (p = 0.05). Dehydrogenase activity was 2.8 to 3.1 times higher in the control soils compared to the impacted soil whereas Phenol oxidase was 15.14 to 15.75 times higher in the impacted soils in both seasons. This study indicates that Exploration and Production activitiesi in the coastal wetlands if not carried out according to specified guidelines by the environmental control agencies can result in the reduction of beneficial soil bacterial population and diversity, high concentrations of heavy metals, petroleum hydrocarbon and decreased dehydrogenase activity at impacted explored wetland site. It also revealed non-impacted regions of this explored wetlands not within oil pipe-line routes are fit for agricultural use.
机译：使用湿法和干燥季节的微生物和化学程序评估暴露于原油勘探活动的沿海湿地土壤。从受冲击的湿地土壤中分离的细菌包括属性，阿尔卡利根，酸杆菌，偶氮杆菌，芽孢杆菌，细胞霉菌，黄杆菌，微微会，蛋白质，假单胞菌，嗜酸盐菌，血清，血清，血清，血清和葡萄球菌。此外，从非碰撞的土壤中分离出属硝基杆菌，亚硝基菌和根瘤菌的种类。潮湿和干燥季节中的总异质细菌计数（THBC）范围为7.1±0.4至8.6±0.2日志?? CFUG¯1和3.7±0.04至5.4±0.1 log ?? CFUG¯1用于控制和受影响的土壤分别。对照的计数比受撞击土壤高1.6％，差异在p = 0.05时显着。与受撞击土壤相关的硝化细菌（NB）是最不利影响的。在受影响的土壤中，不同重金属浓度高出2.11至139倍，而不是对照，季节的受影响的土壤中的总石油烃总量高1.13至1.26×10〜（4）倍，这些差异很大（P = 0.05）。与受撞击土壤相比，对照土壤脱氢酶活性在对照土壤中较高2.8至3.1倍，而苯酚氧化酶在两个季节的受冲泡中较高的15.14至15.75倍。本研究表明，沿海湿地的勘探和生产活动如果环境控制机构的指定准则，可能导致减少有益土壤细菌种群和多样性，高浓度的重金属，石油烃和降低的脱氢酶活性受影响探索湿地遗址。它还揭示了这一探讨的湿地的非受影响的地区，该潮湿地不适合农业用途。

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