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2013 Fiscal Year Final Research Report

Evaluation of Total Nitrogen Load in the River Basins with RS and GIS Data

Research Project

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Project/Area Number 23560481
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field System engineering
Research InstitutionThe University of Tokyo

Principal Investigator

KAZUO Oki  東京大学, 生産技術研究所, 准教授 (50292628)

Project Period (FY) 2011 – 2013
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
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.

  • Research Products

    (7 results)

All 2014 2013 2012 2011

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (3 results) Book (2 results)

  • [Journal Article] 日本の水害常襲地の分布とその特性2014

    • Author(s)
      梯滋郎,中村晋一郎,沖大幹,沖一雄
    • Journal Title

      水工学論文集

      Volume: 第58巻

    • Peer Reviewed
  • [Journal Article] Estimation of discharges at river mouth with MODIS image2012

    • Author(s)
      Kohei Hshimoto, Kazuo Oki
    • Journal Title

      International Journal of Applied Earth Observation and Geoinformation

      Volume: Vol.21 Pages: 276-281

    • Peer Reviewed
  • [Presentation] Effectiveness of Band Ratio for Chlorophyll Concentration2013

    • Author(s)
      Kazuo Oki
    • Organizer
      35th Reses Symposium 2013
    • Place of Presentation
      Harunako, Gunma.
    • Year and Date
      20130800
  • [Presentation] Estimation of River Discharges with Remotely Sensed Imagery2011

    • Author(s)
      Kazuo Oki, Kohei Hashimoto, Jiro Kakehashi, Panya Polsan, Shinichiro Nakamura, Daisuke Komori, and Taikan Oki
    • Organizer
      Proceedings of the32nd Asian Conference on Remote Sensing
    • Place of Presentation
      Taipei, Taiwan.
    • Year and Date
      20111000
  • [Presentation] Estimation of River Discharges with MODIS Images2011

    • Author(s)
      Kohei Hashimoto, Kazuo Oki
    • Organizer
      IGARSS2011
    • Place of Presentation
      Vancouver, Canada.
    • Year and Date
      20110700
  • [Book] ネクストパブリッシング,GISとの付き合い,空間情報の未来へ2013

    • Author(s)
      沖一雄
    • Total Pages
      2
    • Publisher
      GIS NEXT
  • [Book] Mapping potential annual pollutant loads in river basins using remotely sensed imagery2012

    • Author(s)
      K azuo Oki, B. He, and T. Oki
    • Total Pages
      21
    • Publisher
      Environmental Remote Sensing and System Analysis (Ni-Bin Chang, ed.) CRC Press

URL: 

Published: 2015-07-16  

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