筑後川河口部における底質中の形態別栄養塩の分布特性に関する研究

抄録

Nutrients concentrations in the sediment in the estuary of the Chikugo River were surveyed around the flood period. After the flood period, Fe-P, Al-P and Ads-P concentration increased in the sediment of the tidal flat at the front of rivers. On the other hand, concentration of these components in the sediment of the tidal flat, which is far from river mouths, did not increase. Moreover, concentrations of nitrogen and organic carbon in the sediment decreased in the tidal flat. It was clarified that the discharged sediment from the river basin affected the nutrient concentration and environment of the surface sediment in the estuary