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1996 Fiscal Year Final Research Report Summary

Effects of air pollution on the tree growth and vigor on the Japan Sea coast-a dendrochronological study-

Research Project

Project/Area Number 07308065
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section総合
Research Field 環境保全
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KAWANO Shoichi  Department of Botany, Graduate School of Science, Kyoto University, Professor, 大学院理学研究科, 教授 (30019244)

Co-Investigator(Kenkyū-buntansha) YOKOHATA Yasushi  Faculty of Education, Toyama University, Assistant Professor, 教育学部, 助教授 (60222387)
KATO Terutaka  Dept of Public Health, Toyama Medical & Pharmaceutical University, Instructor, 医学部, 助手 (80115162)
FUTAI Kazuyoshi  Graduate School of Agriculture, Kyoto University, Assistant Professor, 大学院・農学研究科, 助教授 (50165445)
Project Period (FY) 1995 – 1996
Keywordsair pollution / tree visual injury / tree ring growth / dendrochronology / pine wilt desease / standardized ring index
Research Abstract

1.The effects of low level air pollution on various tree elements, including Cryptomeria japonica (Japanese Cedar), Pinus densiflora, Pinus thunbergii, and numerous other broad-leaved evergreen as well as deciduous trees, have been studied in the surrounding area of two thermoelectric power stations in Sakai-gun, Fukui Prefecture, on the Japan Sea side of central Honshu, Japan. The monitoring on the degree of visual injury of tree species in the whole area has been cotinued for 23 years since 1974, and in the present report the results of the field survey on the visual injury during 1995 and 1996 are compiled. There are no trees at present without any visual injury in this area, reflecting effects of air pollution. Morphological and phyiological symptoms were also examined.
2.A dendrochronological study was also carried out to evaluate the effects of air pollution on the increment growth of Japanese Cedars. Conspicuous correlations between the levels of air pollution and decline in tree ring growth were recognized. The growth inhibition was also revealed by the tree ring analysis.
3.Pine forests consisting of Pinus densiflora and P.thunbergii have been devastated by pine wilt disease for past 40 years in the large areas, especially in the southwestern part of Japan. In the present study we have examined radial growth of pine trees which were killed by pine wilt to elucidate how environmental stresses such as air pollution and/or acid deposition affect the disease in its development. Aged trees, about 100 years old or more, show reduction in radial growth in accordance with SOx increase in the air. However, such trees, even though survived under the stress, were abruptly killed when their growth recovered.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Iwahori, H.: "Changes in nematode population and movement in pine seedlings with the development of pine wilt disease : suppressive effect of water extracts from infected pine seedlings on the movement of nematodes" Appl. Entomol. Zool.31 (1). 11-20 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Maehara, N.: "Factors affecting both the numbers of the pinewood nematode, Bursaphelenchus xylophilus (Nematoda : Aphelenchoididae), carried by the Japanese pine sawyer, Monochamus alternatus (Coleoptera : Cerambycidae) and the nematode's life history" Appl. Entomol. Zool.31 (3). 443-452 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Asai, E.: "The characteristics of oleoresin exudation amount from the trunks of pine trees" J. For. Res.1. 87-91 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kikuchi, J.: "The role of litter and humus layer as a mortality factor of seedling of Japanese red pine, Pinus densiflora Sieb. & Zucc." J. For. Res.1. 37-40 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tsuda, K.: "The triparite relationship in gill-knot disease of the oyster mushroom, Pleurotus ostreatus (Jacq. : Fr.) Kummer" Can. J. Bot.74. 1402-1408 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hata, K.: "Variation in fungal endophyte populations in needles of the genes Pinus" Can. J. Bot.74. 103-114 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Iwahori, H.and Futai, K.: "Changes in nematode population and movement in pine seedlings with the development of pine wilt disease : suppressive effect of water extracts from infected pine seedlings on the movement of nematodes" Appl.Entomol.Zool.31(1). 11-20 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Maehara, N.and Futai, K.: "Factors affecting both the numbers of the pinewood nematode, Bursaphelenchus xylophilus (Nematoda : Aphelenchoididae), carried by the Japanese pine sawyer, Monochamus alternatus (Coleoptera : Cerambycidae) and the nematode's life history" Appl.Entomol.Zool.31(3). 443-452 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Asai, E.and Futai, K.: "The characteristics of oleoresin exudation amount from the trunks of pine trees" J.For.Res.1. 87-91 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kikuchi, J., Iiida, S., Akema, T.and Futai, K.: "The role of litter and humus layr as a mortality factor of seedlings of japanese red pine, Pinus densiflora Sieb.& Zucc." J.For.Res.1. 37-40 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tsuda, K., Kosaka, H.and Futai, K.: "The triparite relationship in gill-knot disease of the oyster mushroom, Pleurotus ostreatus (Jacq. : Fr.) Kummer" Can.J.Bot.74. 1402-1408 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hata, K.and Futai, K.: "Variation in fungal endophyte populations in needles of the genus Pinus" Can.J.Bot.74. 103-114 (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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