蒸発速度に及ぼす土壌塩抽出の影響ーチャオソイルの場合ー

概要

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This paper introduces two new methods "Water Absorption Paper method" and "Microscope Visualization method" to help a better understanding of the properties of evaporation from Chao soil surface saturated with saline water. The former can measure the salt concentration on the soil surface, Csurf. The latter can visualize the occurrence-multiplication of salt crystal and the growth of the educed salt. These new methods found the following two results; (i)the commencement of 1st falling-rate evaporation period is mostly in agreement with the appearance time of the crystal form of salt (salt crystal) on the soil surface after Csurf reached the saturation salt conccentration, (ii) the commencement of 2nd falling-rate evaporation period is mostly in agreement with the appearance time of educed salt caused by drying of the salt crystals.