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The effects of changes in chemical properties of soil especially neutralization of acid by urbanization on carbon dynamics in urban forests

Research Project

Project/Area Number 19K06333
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 41050:Environmental agriculture-related
Research InstitutionChiba University

Principal Investigator

Takahashi Terumasa  千葉大学, 大学院園芸学研究院, 准教授 (20291297)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords都市化 / 都市緑地 / 土壌 / 有機物分解 / 生物多様性 / 土壌酸性 / 反応速度論的解析 / 土壌動物群集 / 土壌微生物活性 / 緑地 / 化学的性質 / 有機物動態 / 土壌の化学的性質 / 土壌の生物学的性質 / 物質循環
Outline of Research at the Start

都市林周辺の都市化の進行に伴い、都市林土壌の酸が中和され、炭素濃度が高まる傾向にある。本研究は都市化に伴う土壌の酸の中和が、土壌での炭素動態を変化させるしくみを明らかにすることを目的とする。土壌の酸の中和が土壌での有機物動態を変化させ、都市林土壌の炭素濃度を増加させるしくみを解明するために、(1) 都市林土壌の酸性が土壌の養分特性に及ぼす影響、(2) 土壌の養分特性が植物から土壌に供給される有機物(落葉落枝)の質(分解されやすさ)におよぼす影響、(3) 土壌酸性が土壌中で有機物を分解・無機化する微生物の量や活性に及ぼす影響、およびそれらの相互作用について検討する。

Outline of Final Research Achievements

With urbanization, the concentration of calcium, magnesium, etc. derived from dust in the soil increased, the amount of manganese absorbed by plants decreased relatively, and the nitrogen concentration increased, resulting in difficult decomposition contained in leaves. Decomposition of sex organic substances was suppressed and the carbon concentration in the soil increased. In addition, the acid in the soil was neutralized by the influence of dust due to urbanization, and the diversity of soil animals was reduced, so that the decomposition of foliage by soil animals was suppressed, which was also a factor in increasing the carbon concentration in the soil.

Academic Significance and Societal Importance of the Research Achievements

都市緑地を管理する際に、都市環境が都市緑地生態系におよぼす影響に配慮する必要がある。現在の都市緑地での植物管理は、山岳地の森林や農地といった、都市化の影響をあまり受けていない地域で得られた知見に基づいて行われている。今後、都市域での緑地管理には、自然界の物質循環の要素を取り入れた管理を行うことが望ましく、都市環境が物質循環特性におよぼす影響を明らかにした本研究の成果が活かされると考える。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Book (1 results)

  • [Journal Article] 都市林に持続性をもたらす物質循環2021

    • Author(s)
      高橋輝昌
    • Journal Title

      グリーン・エージ

      Volume: 574 Pages: 15-19

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Relationship between detritivore diversity and organic matter decomposition characteristics in urban green area2020

    • Author(s)
      HITOMI Takuya、WATANABE Takumi、TAKAHASHI Terumasa
    • Journal Title

      Journal of the Japanese Society of Revegetation Technology

      Volume: 46 Issue: 1 Pages: 9-14

    • DOI

      10.7211/jjsrt.46.9

    • NAID

      130007961222

    • ISSN
      0916-7439, 1884-3670
    • Year and Date
      2020-08-31
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Examination of measuring method of soil microbial activity using tea bag2020

    • Author(s)
      TAKAHASHI Terumasa、MORINO Jin、TERADA Kento、TSUCHIDA Kento、HITOMI Takuya
    • Journal Title

      Journal of the Japanese Society of Revegetation Technology

      Volume: 46 Issue: 1 Pages: 146-149

    • DOI

      10.7211/jjsrt.46.146

    • NAID

      130007961127

    • ISSN
      0916-7439, 1884-3670
    • Year and Date
      2020-08-31
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of elemental concentrations and decomposition characteristics of plant organic matters of <i>Carpinus tschonoskii</i> Maxim. in mountainous areas and urban green areas2019

    • Author(s)
      Takuya HITOMI、Akiko INAMI、Terumasa TAKAHASHI
    • Journal Title

      Journal of the Japanese Society of Revegetation Technology

      Volume: 45 Issue: 1 Pages: 15-20

    • DOI

      10.7211/jjsrt.45.15

    • NAID

      130007776309

    • ISSN
      0916-7439, 1884-3670
    • Year and Date
      2019-08-31
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Book] 森林学の百科事典2021

    • Author(s)
      (一社)日本森林学会
    • Total Pages
      694
    • Publisher
      丸善出版
    • ISBN
      9784621305843
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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