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1996 Fiscal Year Final Research Report Summary

Identification of the old-grown broad-leaved forest dynamics with non-linear engineering method

Research Project

Project/Area Number 07806021
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林学
Research InstitutionSHIZUOKA UNIVERSITY

Principal Investigator

NOGAMI Keiitirou  SHIZUOKA UNIVERSITY,AGRICULTURE,ASSOCIATE PROFESSOR, 農学部, 助教授 (50150511)

Co-Investigator(Kenkyū-buntansha) OOSAKA Okihiro  SHIZUOKA UNIVERSITY,AGRICULTURE,ASSOCIATE PROFESSOR, 農学部, 助手 (20252166)
YUASA Yasuo  SHIZUOKA UNIVERSITY,AGRICULTURE,ASSOCIATE PROFESSOR, 農学部, 助手 (70022069)
Project Period (FY) 1995 – 1996
KeywordsNon-linear engineering method / Fractal / Genetic algorithms / Fuzzy theory / Neural network / Multiple forest land use planning / Kansei / Artifical intelligence
Research Abstract

Fractal geometry, genetic algorithms, neural network (parallel distributed processing) and fuzzy theory, as the typical representative concepts of non-linear engineering method, were introduced in this research. It has been shown that these techniques are effective measures in comprehension and modeling complicatednature objects and social phenomenon. Meanwhile, they have been scarcely applied in forestry.
The fractal characteristics of stand structure (trees location, species diversity, diameter distirbution) of old-grown broadleaved were examined and verified. The results suggested that 3 factors all follow fractal distribution.
The relationship of fractal characteristics of tree crowns structure and maximun density curves was indicated. The result showed that fractal dimension of tree crowns is closely associated with the ecological constant of maximum density curve.
The power of neural network was demonstrated in applying it to the problem of multiple forest land use and visual quality ascertain. In order to bulid the sturucture of neural network, an unusual method was introduced. Namely, based on the genetic algorithms, the number of input, the intermediate layr and the neuron number which formed intermediate layr, the type of threshold function were optimized.
For the purpose that to promote this initial research, problems on the collection of necessary essential data were discussed.
Application of non-linear engineering method were prospected. The necessity for developing the growth process prediction model of broad-leaved forests and the fuzzy expert system which based on a serial researches was suggested.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 野上啓一郎他: "荒廃自然環境を有する森林空間の利用と保全に関する研究-静岡市安倍川上流域における事例-" 静岡大学農学部演習林報告. 第19号. 39-45 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野上啓一郎: "非線形農学の展望" 森林科学. 第15号. 62- (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野上啓一郎他: "広葉樹天然生林における非線形性" 第106回日本林学会大会論文集. 201-202 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野上啓一郎他: "林学における非線形問題(I)" 第106回日本林学会大会論文集. 203-204 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野上啓一郎: "非線形農学の展望" 森林科学. 第18号. 54- (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Keiitirou Nogami: "A prospect of non-linear engineering method" SINRIN KAGAKU. Vol.15. 62 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Keiitirou Nogami, et.al: "Nonlinearity for natural regenerated broad-leaved forest" Transaction of the Japanese Forestry Socity. No.106. 201-202 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Keiitirou Nogami, et.al: "Non-linear problems in forest science(I)" Transaction of the Japanese Forestry Society. No.106. 203-204 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Keiitirou Nogami: "A prospect of non-linear engineering method" SINRIN KAGAKU. Vol.18. 54 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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