Abstract
To evaluate the effect of land cover on the dissolved iron loading to river, river water samples were collected from the rivers in Kitakami mountains in northeastern Japan in winter. The relation of dissolved iron concentration to water qualities and land cover were evaluated, and iron load unit of each land cover type were estimated. Dissolved iron was significantly correlated with DOC, specific UV absorbance (A254) and land cover percentages of paddy field and urban area. The load unit of the dissolved iron from boroad leaf forest, paddy field, and urban area were estimated as 1.57, 139 and 439 g/km2/day respectively. Thus, the human activity in river basin are found to highly contribute to the iron loading to river.
