TRANSPORT OF MICROORGANISMS THROUGH SOIL
TRANSPORT OF MICROORGANISMS THROUGH SOIL
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DOI：
10.1007/bf01100406
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发表时间：
1994-05-01
影响因子：
2.9
通讯作者：
ZELIN, S
中科院分区：
文献类型：
--
作者：
ABUASHOUR, J;JOY, DM;ZELIN, S
微生物从陆地表面的源头迁入和通过土壤可能对地下水和地表水造成严重威胁。据估计，微生物可以在野外迁移很远的距离。各种研究的结果表明，通过大孔隙、蠕虫洞、裂缝和裂缝的优先流动是观察到这种现象的主要原因。然而，还没有提供这一现象的数量表示。微生物通过平流和扩散在土壤中迁移，同时受到过滤、吸附、解吸、生长、腐烂、沉淀和趋化的影响。实验室和田间调查都为细菌在土壤中的移动提供了重要信息。定性比较通常可以从实验室转移到现场。量化协议的建立要困难得多。现有的微生物传输数学模型在实际应用中受到限制，因为在其发展过程中使用了简化的假设。
Microorganisms migrating into and through soil from sources on the land surface may cause a serious threat to both ground and surface waters. It has been estimated that microorganisms can migrate significant distances in the field. Results from various studies suggested that preferential flow through macropores, worm holes, cracks, and fractures is the main reason for such observations. However, a quantitative representation of this phenomenon has not been provided. Microorganisms migrate through soil by advection and dispersion, while being subjected to effects of filtration, adsorption, desorption, growth, decay, sedimentation and chemotaxis. Both laboratory and field investigations have contributed important information on bacterial movement in soils. Qualitative comparisons are generally transferable from laboratory to field situations. Quantitative agreement is much more difficult to establish. Available mathematical modelling of microbial transport is limited in practical application because of the simplifying assumptions used in its development.