Notice of RetractionExotic and Native Poplars Effects on Soil Microbial Communities and Enzyme Activity in Different Months

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

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Invasions by exotic plant species can alter ecosystem properties, including important soil functions and characteristics. We present here a study of rhizosphere soil microbial communities and three enzyme activities from exotic poplars six poplars Jiayang, Fenlanyang, Eluosiyang and native poplars Xiaoyeyang, Xiaoqingyang, Xing-anyang. We used RAPD methods to analyse the effects of six poplars species on soil microbial community. Soil microbial community of exotic and native poplars showed a significant difference between each other. According to the analyzes of soil enzyme activities, we found that the values of phenol oxidase changed significantly between the exotic and native poplars, and the change of phosphomonoesterase activity among different months were not regularly in exotic poplars which compared with the native ones. The urease activities of exotic and native poplars were tending to be increase along with the time increasing. The exotic poplars make few changes on urease activities compared with native poplars. Eluosiyang which close to the native poplars on soil characters may has a little effect on rhizosphere soil microbial communities and soil conditions.