植生砂州における洪水後脱窒ポテンシャルの定量化の試み

抄録

This study is focused on the denitrification of sand bar driven by subsurface water flow in aim to the quantification of ecological function in a river. Denitrification in the sand bar is mainly influenced by advection of subsurface water flow and reaction of microorganism according to the soil and environmental condition (potential) of each site. We proposed the new method for quantify the denitrification potential based on the field observation result which include morphological and hydronic parameters before and after flood. An empirical formula which quantifies the potential according to landscape elements in sand bar was created by using the field data. It was found that the denitrification potential has highest value in riverine vegetated area just after flood.