细菌在土壤中运移模型的研究进展

大多数细菌运移实验是在室内控制条件下土柱内进行，得到的结果却不尽一致，有必要对该方法进行标准化；此外，可采用与显微镜结合研究孔隙尺度下的细菌运移．本文认为依据对流-弥散方程建立的细菌运移的数学模型，在一定限制条件下，与实验结果拟合较好，但模型忽略了许多参数，如生长、死亡．若在大田尺度下应用，还应对机理理论、实验范围、尺度转换、模型建立进行更深入的研究．

A review on modelling bacterial transport in soils

Most studies on bacterial transport in soils were carried out in columns under controlled conditions, and the results were various, reflecting the need of standardizing the method. Other methods were also used in conjunction with microscopy to examine the transport at pore scale. Mathematical models based on convection dispersion equation were developed to simulate bacterial transport.Within specific limits, these models could simulate the major behaviors of bacterial transport. However, they neglected some parameters such as the growth and death of bacteria.The theoretical development, experimental size, scale exchange and modeling for predicting bacterial transport at field scale should be further studied.