10:35 〜 10:45
[ACG05-P04_PG] ライン川における１９７９年から１９９４年における月および経年変化と土地利用変化に関する研究
ポスター講演3分口頭発表枠
キーワード：水質, 汚濁負荷量, 土地利用, ライン川
Rhine River is the international river, which flows through several countries, so it is important to know and maintain the water quality. To estimate the gross loading to the marine environment is necessary for assessment of the current status of the coastal zone, especially for the water quality of Bays and Estuary zone.
In this study, we estimate Ammonia SS loading at Rhine River by using GEMS/Water (Global Environment Monitoring System/ Water) Dataset and GRDC (Global Runoff Data Centre) Dataset.
The procedure of this research is three steps. First, we have used the set of discharge data obtained from GRDC to be used for the loading estimation based on the observed data. Second, the locations of GEMS/Water and GRDC station have been compared to identify appropriate station to set the calculation loading. Finally, we have multiplied concentration and discharge to get the loading.
The characteristics land use of Rhine River basin has been analyzed using the Global Land Cover Characterization dataset prepared by USGS.
For land use change of Rhine River basin has been analyzed by using landsat5 and landsat7 images.
The concentration and loading results show seven things :(1) From December to February, Ammonia concentration was higher than other months. (2) From January to march, Ammonia loading was higher than other months. (3) Ammonia concentration was gradually decreasing except through1983 to 1987. (4) Ammonia loading was decreasing and the number suddenly dropped at 1989 (5) SS concentration was stable through 1979 to 1994 except 1983, 1984 and 1995. (6) From December to February SS loading was higher than other months. (7) SS loading was gradually decreasing and the number suddenly dropped at 1989.
The Rhine river watershed is mainly forest and grassland by analyzing land use from USGS data. This land use affects water quality
In this study, we estimate Ammonia SS loading at Rhine River by using GEMS/Water (Global Environment Monitoring System/ Water) Dataset and GRDC (Global Runoff Data Centre) Dataset.
The procedure of this research is three steps. First, we have used the set of discharge data obtained from GRDC to be used for the loading estimation based on the observed data. Second, the locations of GEMS/Water and GRDC station have been compared to identify appropriate station to set the calculation loading. Finally, we have multiplied concentration and discharge to get the loading.
The characteristics land use of Rhine River basin has been analyzed using the Global Land Cover Characterization dataset prepared by USGS.
For land use change of Rhine River basin has been analyzed by using landsat5 and landsat7 images.
The concentration and loading results show seven things :(1) From December to February, Ammonia concentration was higher than other months. (2) From January to march, Ammonia loading was higher than other months. (3) Ammonia concentration was gradually decreasing except through1983 to 1987. (4) Ammonia loading was decreasing and the number suddenly dropped at 1989 (5) SS concentration was stable through 1979 to 1994 except 1983, 1984 and 1995. (6) From December to February SS loading was higher than other months. (7) SS loading was gradually decreasing and the number suddenly dropped at 1989.
The Rhine river watershed is mainly forest and grassland by analyzing land use from USGS data. This land use affects water quality