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Why water source separation is achieved between coexisting species?

Research Project

Project/Area Number 23540508
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionUniversity of Tsukuba

Principal Investigator

YAMANAKA Tsutomu  筑波大学, 生命環境系, 准教授 (80304369)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords生態水文学 / 同位体 / 数値シミュレーション / 根系吸水 / 水源分化 / 種間競合 / 生態水文 / 水循環 / 生態系
Research Abstract

In order to reveal mechanisms of "water source separation" between coexisting species and to establish a method to obtain reliable estimate of water uptake profile of plants, investigations were made at a pure forest of Japanese cypress and a mixed forest of Japanese red pine and Japanese white oak. As a result, it was shown that a combined use of isotopic tracer and numerical model enables us to reliably estimate water uptake profile. In addition, it is concluded that water separation is achieved to avoid reduction of water use efficiency as a whole ecosystem when soil water is not enough to meet demand of plants. Initial profiles of root density and transpiration rates of competing species affect patterns of water separation.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (5 results)

All 2013 Other

All Presentation (5 results)

  • [Presentation] Comparative study on methods for estimating root water uptake profile2013

    • Author(s)
      Yamanaka, T., T. Kimura, X. Sun and Y. Onda
    • Organizer
      The 3rd International Conference on Forest & Water in a Changing Environment
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2013-09-20
    • Related Report
      2013 Final Research Report
  • [Presentation] Integrated use of isotopic tracers and numerical simulation for analyzing water source separation between coexisting plant species2013

    • Author(s)
      Yamanaka, T
    • Organizer
      10th Applied Isotope Geochemistry Conference
    • Place of Presentation
      Budapest, Hungary
    • Related Report
      2013 Final Research Report
  • [Presentation] Integrated use of isotopic tracers and numerical simulation for analyzing water source separation between coexisting plant species.2013

    • Author(s)
      Yamanaka, T.
    • Organizer
      10th Applied Isotope Geochemistry Conference
    • Place of Presentation
      Budapest, Hungary
    • Related Report
      2013 Annual Research Report
  • [Presentation] Root water uptake profiles for plants under competitive environment.2013

    • Author(s)
      Yamanaka, T.
    • Organizer
      The 12th Tunisian-Japanese Symposium on Society, Science & Technology
    • Place of Presentation
      Yasmine Hammamet, Tunisia
    • Related Report
      2013 Annual Research Report
  • [Presentation] Comparative study on methods for estimating root water uptake profile

    • Author(s)
      Yamanaka, T., T. Kimura, X. Sun and Y. Onda
    • Organizer
      The 3rd International Conference on Forest & Water in a Changing Environment
    • Place of Presentation
      福岡, 福岡工業大学
    • Related Report
      2012 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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