流域GISを用いた物質負荷量解析 : 太田川及び芦田川流域の比較

Estimation of nutrient load in the Ota River and the Ashida River watersheds using GIS

Xiao Hang

Shimizu Yuta

Onodera Shinichi

Takahashi Hidehiro

Kodera Koji

広島大学大学院総合科学研究科紀要. II, 環境科学研究

Bulletin of the Graduate School of Integrated Arts and Sciences, Hiroshima University. II, Studies in environmental sciences

Substance load from land to the ocean has been clarified. In this research, it aims at evaluating the changes in the amount of loads of a basin based on statistical information and geographical information; such as land use and population information using the original unit method. Two rivers located in Hiroshima Prefecture which flow into the Seto inland sea are mentioned as examples. This research showed that the amount of nutrient outfl ows in the Ota River watershed and the Ashida River watershed was increasing. Although there was little growth of the nonpoint source load in the Ota River watershed and the Ashida River watershed, a large increase in the amount of discharge by the domestic waste water were seen

General geography. Description and travel [ 290 ]

jpn

広島大学大学院総合科学研究科

Copyright (c) 2008 Graduate School of Integrated Arts and Sciences, Hiroshima University. All rights reserved.

[ISSN] 1881-7696

[NCID] AA12198658