It has been estimated that a typical gram of soilcontains around 90 100 million bacteria and about200 000 fungi, with the majority of these organismsbeing located around the roots of plants. This locali-zation reflect...It has been estimated that a typical gram of soilcontains around 90 100 million bacteria and about200 000 fungi, with the majority of these organismsbeing located around the roots of plants. This locali-zation reflects the fact that plant roots typically exudea large fraction of the carbon that they fix by photo-synthesis, and soil microbes utilize this exuded carbonas a food source.展开更多
文摘It has been estimated that a typical gram of soilcontains around 90 100 million bacteria and about200 000 fungi, with the majority of these organismsbeing located around the roots of plants. This locali-zation reflects the fact that plant roots typically exudea large fraction of the carbon that they fix by photo-synthesis, and soil microbes utilize this exuded carbonas a food source.
