| Research on the soil infiltration characteristics in the field |
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| DOI：10.7606/j.issn.1000-7601.2013.04.006 |
| Key Words: soil infiltration infiltration function infiltration time reasonable sampling number |
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| Abstract: |
| Based on the double-ring infiltration experiments carried out in the selected fields of the first terrace and the third terrace with sandy loam and clay loam respectively in Yangling District, Shaanxi Province, China, the soil infiltration characteristics under different soil textures were studied. The results showed that the modified Kostiakov function was the optimal choice in describing the process of soil infiltration. The reasonable observing time of infiltration experiment was no less than 90 min in the first terrace with sandy loam and no less than 120 mins in the third terrace with clay loam. Based on the maximum correlation distance among the infiltration parameters, the reasonable sampling number was proved to be 42 for the selected fields in both the first terrace and the third terrace. The spatial variation characteristics of basic infiltration rate f0 could be employed to describe the infiltration performance and to measure th
e infiltration capacity of soil, and the spatial variation characteristics of the infiltration parameter k should also be taken into consideration. The study results could set the scientific foundation for a further study of soil infiltration characteristics. |