Assessing Variability of Infiltration Characteristics and Reliability of Infiltration Models in a Tropical Sub-humid Region of India.

摘要: Infiltration process, which plays a paramount role in irrigation and drainage systems design, groundwater recharge contamination evaluation, flood drought management etc. is often controlled by several factors, among land use/land cover (LULC) soil physical properties are the prime factors. These factors lead to significant spatial variability of infiltration poses serious challenge for hydrologists water managers. However, studies analyzing influence both LULC scarce. To this end, grid-based experiments were carried out tropical sub-humid region India investigate characteristics, saturated hydraulic conductivity (Ksat) as well evaluate reliability seven models predicting behaviour estimating Ksat. Additionally, uncertainty analysis was performed quantify uncertainties associated with estimated Ksat different soils. Results indicated that quasi-steady rate over study area vary considerably majority falling under ‘low’ ‘medium’ categories. The process greatly influenced macro-pores relatively low-permeable layers present at varying depths, typical features lateritic vadose zones regions, rather than its sole dependence on texture LULC. Further, Brutsaert model estimates highest accuracy least followed Swartzendruber Horton models. Except model, other sensitive particular Overall, it inferred robust more reliable behavior area. Findings including quantification important useful understanding detailed hydrological processes thereby, ensuring better planning recurring floods problems region.