2013 Fiscal Year Final Research Report
Evaluation of Total Nitrogen Load in the River Basins with RS and GIS Data
| Project/Area Number |
23560481
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
System engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KAZUO Oki 東京大学, 生産技術研究所, 准教授 (50292628)
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| Project Period (FY) |
2011 – 2013
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| Keywords | リモートセンシング / 土地利用 / 流域窒素循環モデル / 流域環境評価 |
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| Research Abstract |
We first analyzed the relation between the land cover types estimated from monthly maximum Normalized Difference Vegetation Index (NDVI) imagery calculated from satellite imagery and the annual total nitrogen load discharged from river basins. We found that the runoff load factor from urban areas is higher than those of forested areas. We also found that the impacts of land cover such as plantation and field weed communities on the total nitrogen load of each river are higher than the impacts of other land cover types.
Finally, we evaluated the risk assessment of total nitrogen load impact on lakes and the sea through rivers from each basin. Also, we evaluated the state of river basins.
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