Günther T, Dornberger U, Fritsche W
Institut für Mikrobiologie, Friedrich-Schiller-Universität Jena, FRG.
Chemosphere. 1996 Jul;33(2):203-15. doi: 10.1016/0045-6535(96)00164-6.
The effects of growing ryegrass (Lolium perenne L.) on the biodegradation of hydrocarbons was studied in laboratory scale soil columns. Degradation of hydrocarbons as well as bacterial numbers, soil respiration rates and soil dehydrogenase activities were determined. In the rhizosphere soil system, aliphatic hydrocarbons disappeared faster than in unvegetated columns. Abiotic loss by evaporation was of minor significance. Elimination of pollutants was accompanied by an increase in microbial numbers and activities. The microbial plate counts and soil respiration rates were substantially higher in the rhizosphere than in the bulk soil. The results indicate that biodegradation of hydrocarbons in the rhizosphere is stimulated by plant roots.
在实验室规模的土壤柱中研究了黑麦草（Lolium perenne L.）生长对碳氢化合物生物降解的影响。测定了碳氢化合物的降解以及细菌数量、土壤呼吸速率和土壤脱氢酶活性。在根际土壤系统中，脂肪族碳氢化合物的消失速度比无植被的柱中更快。蒸发造成的非生物损失意义不大。污染物的去除伴随着微生物数量和活性的增加。根际的微生物平板计数和土壤呼吸速率显著高于土体土壤。结果表明，根际中碳氢化合物的生物降解受到植物根系的刺激。
