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Studies on the nutrient cycling in the deciduous broadleaved secondary forest regenerating by sprout at clearcut area.

Research Project

Project/Area Number 02660160
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionShimane University

Principal Investigator

KATAGIRI Shigeo  Shimane Univ., Fac. of Agric., Professor, 農学部, 教授 (00032649)

Co-Investigator(Kenkyū-buntansha) NAGAYAMA Yasuhide  Shimane Univ., Fac. of Agric., Assistant, 農学部, 助手 (60228062)
KANEKO Nobuhiro  Shimane Univ., Fac. of Agric., Assoc. Prof., 農学部, 助教授 (30183271)
SHINMURA Yoshiaki  Shimane Univ., Fac. of Agric., Assoc. Prof., 農学部附属演習林, 助教授 (80206333)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsNutrient cycling / Sprout regeneration / Clearcut / Runoff / Nutrient return / Aboveground biomass
Research Abstract

Though the nutrient cycling in the natural forest was generally stable, it would be very unstable in the area where forests were clearcut and the recovery of nutrient cycling is very important. This study were dealt with the nutrient cycling in the clearcutting area at Sanbe Forest of Shimane University.
The aboveground biomass in the clearcutting area increased by sprout regeneration on the upper part of slope, and it increased by planting trees on the lower part of slope. The amount of nutrients returned by litterfall increased rapidly in the sprouting forest, but slowly in the manmade forest with the recovery of aboveground vegetation. The outflow of soil and organic matter from watershed were relatively little at six years after cutting. The amount of nutrients returned by rainfall differed greatly between the sprouting forest and man-made forest. As for the balance of input and output in forest ecosystems, the rate of outflow of water was about 75% and it was smaller than that of t … More he natural forest because of the influence of clearcut. The balance of potassium was minus and that of nitrogen was plus as well as the natural forest.
From these results, the increase of the aboveground biomass was large at the early stage, and the amount of nutrient returned by litterfall increased at the early stage of vegetation recovery in the sprouting forest. But the increase of nutrient returned by litterfall was slowly in the man-made forest. Therefore, it is considered that the organic matter in sail decreases temporary by the rapid decomposition and mineralization, and the outflow from the surface soil. However, the influence of clearcut would be small on the nutrient cycling because the vegetation recovered rapidly and the outflow of soil and organic matter from watershed was comparatively little in the sprouting forest. It is a problem that the flow of nutrient cycling, especially the return by litterfall, is broken away. It is important that this flow is recovered as soon as possible. Therefore, the operation of man-made forest is considered to be unprofitable concerning the nutrient cycling. Less

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 金子 信博,片桐 成夫,横山 桂一郎: "コナラ萌芽の伸長過程ー萌芽枝と通常枝との比較ー" 山陰地域研究(森林資源編). 7. 9-15 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 片桐 成夫,金子 信博,長山 泰秀,栗原 紀美子: "萌芽二次林のリタ-フォ-ル量および養分還元量の変化" 島根大学農学部研究報告. 25. 12-22 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 金子 信博,片桐 成夫: "三瓶落葉広葉樹林における皆伐後の構成個体群の動態" 山陰地域研究(森林資源編). 8. 1-5 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 新村 義昭: "島根大学三瓶演習林の最上の最上流域に設定された微小流域における水文観測" 山陰地域研究(森林資源編). 8. 17-22 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nobuhiro KANEKO, Shigeo KATAGIRI, Keiichirou YOKOYAMA: "Elongation process of Quercus serrata shoot -- Comparison of coppiced and normal shoot elongation --" Stud. of San'in Region. 7. 9-15 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nobuhiro KANEKO, Shigeo KATAGIRI: "Dynamics of seedling population after cear-cutting of coppice forest in Sanbe School Forest of Shimane University" Stud. of San'in Region. 8. 1-5 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigeo KATAGIRI, Nobuhiro KANEKO, Yasuhide NaGAYAMA, Kimiko KURIHARA: "Changes on the amount of nutrients returned by litterfall in a sprouting secondary forest" Bull. Fac. Agric. Shimane Univ.25. 12-22 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yoshiaki SHINMURA: "Hydrological Observation at the very small Forest-watershed of the Headwater in Sanbe District of the Shimane University Forest (I)" Stud. of San'in Region. 8. 17-22 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 片桐 成夫,金子 信博,長山 泰秀,栗原 紀美子: "萌芽二次林のリタ-フェ-ル量および養分還元量の変化" 島根大学農学部研究報告. 25. 12-22 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 金子 信博,片桐 成夫: "三瓶落葉広葉樹林における皆伐後の構成個体群の動態" 山陰地域研究(森林資源編). 8. 1-5 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 新村 義昭: "島根大学三瓶演習林の最上流域に設定された微小流域における水文観測" 山陰地域研究(森林資源編). 8. 17-22 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 金子 信博: "コナラ萌芽の伸長過程ー萌芽枝と通常枝との比較ー" 山陰地域研究(森林資源編). 7. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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