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1996 Fiscal Year Final Research Report Summary

Multi-dimension models of architectural development in forest tree populations

Research Project

Project/Area Number 07304051
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section総合
Research Field 生態
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

KOHYAMA Takashi  Hokkaido Univ.Graduate School of Environmental Earth Science, Prof., 大学院・地球環境科学研究科, 教授 (60178233)

Co-Investigator(Kenkyū-buntansha) SATO Kazunori  Shizuoka Univ.Fac.Eng., Ass.Prof., 工学部・システム工学科, 助教授 (30261382)
OSAWA Akira  Ryukoku Univ.Fac.Intercul.Comm., Ass.Prof., 国際文化学部, 助教授 (90288647)
HARA Toshihiko  Hokkaido Univ.Inst.Low Temp.Sci., Prof., 低温科学研究所, 教授 (80183094)
KIKUZAWA Kihachiro  Kyoto Univ.Center for Ecol.Res.Prof., 生態学研究センター, 教授 (50271599)
Project Period (FY) 1995 – 1996
Keywordsforest tree population / forest tree community / model / leaf mass / size structure / dynamics
Research Abstract

Developmental processes of forest tree populations regulated by among-tree interactions were examined, with special reference to the architectural performance of tree individuals. Particular effort was paid to develop new mathematical models and quantitative monitoring techniques.
(1) Architectural performance of a tree is characterized by a set of such parameters as trunk diameter, top height, crown volume, and leaf mass. To evaluate plastic response of architectural performance, two-dimensional size dynamic model was developed, and pattern of stand development was examined.
(2) Dynamics of the horizontal forest pattern was modeled by employing the concept of two-layred lattice model, and the stability in two-species systems were analytically examined.
(3) Recruitment rate, as a key parameter of forest population dynamics, is difficult to measure in field censuses. A new technique of estimating recruitment rate, named Gf estimation, was developed.
(4) Non-destructive technique of the estimation of leaf mass distribution was developed using CCD camera.
(5) Significance of leafing pattern on a shoot was evaluated by a simple dynamic architecture model.

  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] Kikuzawa, K.: "Geographical distribution of leaf leaf span and species diversity of trees simulated by a leaf-longevity model" Vegetatio. (in press).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kikuzawa, K.: "Effect of canopy structure on degree of asymmetry of competition in two forest stands in northern Japan" Annals of Botany. (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kubota, Y. Hara, T.: "Allometry and competition between saplings of Picea jezoensis and Abies sachalinensis in a sub-boreal coniferous forest, northern Japan" Annals of Botany. 77(in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yokoyama, M. Hara, T.: "Foliage architecture and species coexistence in plant communities with special reference to subboreal mixed forest." Annals of Botany. 77(in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yokoyama, M. Hara, T.: "Foliage profile, size structure and stem diameter-plant height relationship in crowded plant populations" Annals of Botany. 76. 271-285 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kubota, Y. Hara, T.: "Tree competition and species coexistence in a sub-boreal firest, northern Japan." Annals of Botany. 76. 503-512 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Osawa, A: "Inverse relationship of crown fractal dimension to self-thinning exponent of tree populations : a hypothesis." Canadian Journal of Forest Research. 25. 1608-1617 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sato, K. Iwasa, Y.: "Maintenance of forest species diversity and latitudinal gradient" Vegetatio. 121. 127-134 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sato, K. Konno, N.: "Successional dynamical models on the 2-dimensional lattice space" J. Phys. Soc. Jpn.,. 64. 1866-1869 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hara, T. Yokozawa, M. & Kubota, Y.: "Crown architecture and species coexistence in plant communities" Annals of Botany. 78. 437-447 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hara, T. Yokozawa, M. & Kubota, Y.: "Effects of competition mode on spatial pattern dynamics in plant communities" (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kohyama, T.and Takada, T.: "Estimation of recruitment rate in permanent forest plot studies" ournal of Ecology. (submitted to).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kohyama, T.Suzuki, E.: "Forest architecture and dynamics in relation to biodiversity. Biodiversity and The Dynamics of Ecosystems" DIWPA Series. Voleume 1. 103-108 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kohyama, T.: "Integrated modelling : from forest canopy architecture to vegetation zonation in Japanese" Japanese Journal of Ecology. 46. 57-61 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kikuzawa, K.and Umeki, K.: "Effect of canopy structure on degree of asymmetry of competition in two forest stands in northern Japan" Annals of Botany. 77. 565-571 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kikuzawa, K.Koyama, H.Umeki, K.and Lechowicz, M.J.: "Some evidence for an adaptive linkage between leaf phenology and shoot architecture in sapling trees" Functional Ecology. 10. 252-257 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Osawa, A.and Kurachi, N.: "A light-weight CCD camera technique for estimating three-dimensional distribution of folisge density in tree crowns" EcoScience. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sato, K.and Konno, N.: "Successional dynamical models on the 2-dimensional lattice space" Journal of the Physical Society of Japan. 64(6). 1866-1869 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sato, K.: "Lattice models in ecology : usefulness of pair approximation in Japanese" Japanese Journal of Ecology. 45. 247-258 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sato, K.and Konno, N.: "Diffusive generalized contact processes and their coalescing dualities" Proceedings of IWSCI '96. 88-93 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yokozawa, M.Kubota, Y.and Hara, T.: "Crown architecture and species coexistence in plant communities" Annals of Botany. 78. 437-447 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yokozawa, M.Kubota, Y.and Hara, T.: "Effects of competition mode on spatial pattern dynamics in plant communities" Ecological Modelling. (submitted to).

    • 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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