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2011 Fiscal Year Final Research Report

Isoscape monitoring of effect of global warming and land use change on water and material cycling-Hokkaido Isotope Map

Research Project

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Project/Area Number 21510001
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionHokkaido University

Principal Investigator

SUKIMOTO Atsuko  北海道大学, 大学院・地球環境科学研究院, 教授 (50235892)

Co-Investigator(Kenkyū-buntansha) ISHIKAWA Mamoru  北海道大学, 大学院・地球環境科学研究院, 准教授 (50373452)
IWAHANA Go  北海道大学, 大学院・地球環境科学研究院, 特任助教 (70431327)
MIKAMI Hidetoshi  北海道総合研究機構環境科学研究センター, 主査 (80442622)
Project Period (FY) 2009 – 2011
Keywords水循環 / 土地利用 / 同位体マップ / 硝酸同位体比 / 水同位体比 / 河川水
Research Abstract

Isoscape monitoring network was established, and Hokkaido Isotope map on water and nitrogen was made on river, ground water, and lake water. Precipitation was also observed at monitoring stations. Water isotope map showed spatial distribution of d-excess differs between summer and winter reflection the moisture source of winter precipitation generally in Hokkaido. However, constant and also high d values were observed in rivers south of Shikotsu lake, indicating a large ground water system probably connecting to Shikotsu lake. Nitrate concentration was high in the rivers in farmland. Nitrate d^<15>N showed also wide range but mostly 0 to 8‰. Variation may depend on the difference in source of N.

  • Research Products

    (1 results)

All 2011

All Presentation (1 results)

  • [Presentation] 北海道水同位体マップ作成と応用に向けた水の安定同位体比の定点観測2011

    • Author(s)
      都築佑太、時岡仁志、山下洋平、柴田英昭、杉本敦子
    • Organizer
      2011年度日本地球化学会第53回年会
    • Place of Presentation
      札幌市
    • Year and Date
      20110000

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Published: 2013-07-31   Modified: 2014-09-19  

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