@article{oai:sucra.repo.nii.ac.jp:00014582,
 author = {濱本, 昌一郎 and 川本, 健 and 小松, 登志子},
 journal = {CACS FORUM},
 month = {},
 note = {Knowledge of soil-gas and heat transport parameters is essential for simulating behaviors of greenhouse/toxic gases and changes in soil temperature in natural and man-made soil ecosystems, for example in urban polluted soil sites and the soil cover layer at municipal landfill sites. Degree of water-saturation at different water potentials (as described by the soil-water retention curve) highly affects both gas and heat transport parameters. In this study, the effects of water retention hysteresis (non-singularity in the wetting and drainage curves of soil-water retention) on the soil-gas diffusion coefficient (Dp), air permeability (ka), and thermal conductivity (K) were investigated. Different sand size fractions representing different particle shapes were used for measuring gas and heat transport parameters. Soil-water retention hysteresis highly affected the gas transport parameters, showing higher Dp and ka values for the wetting processes than those for drying processes at the same air content. This suggests that the existence of more continuous pore-networks for the wetting processes enhanced diffusive and advective gas transport. Opposite to the behavior of the gas transport parameters, the effect of soil water retention hysteresis on K was insignificant for all sand materials., text, application/pdf},
 pages = {6--11},
 title = {土壌水分ヒステリシスがガス・熱輸送係数に及ぼす影響《マイレビュー》},
 volume = {3},
 year = {2012},
 yomi = {ハマモト, ショウイチロウ and カワモト, ケン and コマツ, トシコ}
}