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2000 Fiscal Year Final Research Report Summary

Classification of the structure of forest canopy from the viewpoint of redistribution of solar radiation and storm water

Research Project

Project/Area Number 10460069
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 林学
Research InstitutionNihon University

Principal Investigator

TSUKAMOTO Yoshinori  Nihon University, College of Bioresource Sciences, Professor, 生物資源科学部, 教授 (60014924)

Co-Investigator(Kenkyū-buntansha) KOBAYASHI Tatsuaki  Tiba University, College of landscape archtecture, Associate, professor, 園芸学部, 助教授 (40178322)
TAKIZAWA Hideki  Nihon University, College of Bioresource Sciences, Lecture., 生物資源科学部, 講師 (60287604)
ISHIGAKI Itsuro  Nihon University, College of Bioresource Sciences, Associate professor., 生物資源科学部, 助教授 (50060075)
HASHIMOYO Tetsu  Shimane Universotu, College of Bioresource Sciences, Associate professor., 生物資源科学部, 助教授 (50314620)
Project Period (FY) 1998 – 2000
Keywordsforest canopy / tropical season forest / solar radiation / spatial variation / big leaf model / Gmax
Research Abstract

The characteristics of forest canopies is multi-layers. The large difference exists between a forest canopy and a grass canopy in absorption of solar radiation, interoeption of storm water and evap-transpiration. The research is carried out putting the stress on the absorption of solar radiation. The observing apparatus are installed in the forest in the conifer forests in Shonan campus of Nihon University and tropical season forests in Thailand. The results of the research is summarised as follows.
1) The difference of transmittance of solar radiation between conifer trees and broad leaved trees is investigated. In case of the scattered radiation, the solar radiation decreases with the area of openness of canopies in both conifers and broad leaved trees. In case of the direct radiation, 50% and 15% of radiation transmitted the canopy of conifers and broad leaved with the same openness of 50%, respectively. The conifer has the canopy structure making more solar radiation transmittable i … More nto the canopy.
2) The influence of the change of canopy to the radiation arriving at the ground in dormant season when tree, leaves fall is investigated. In the dormant season, solar radiation penetrates forest canopies uniformly. Spatial variations of solar radiation is small in forests between conifers and broad leaved trees.
3) The observation of tropical season forests was carried out in the surburb of Chengmai, Thailand. Vegetation is evergreen forests which has the period of the fall of tree leaves. The parameters of Big Leaf Model which indudes canopy conductance and bio-chemical photosynthesis model as sub-model are investigated. With the data of special (manual) measurements conducted four times in a year Gmax (maximum canopy conductance), p(density of chlorophyl1), and e(1-f)(fraction of the incident PAR available for PCR/PCO cycles) showed small values in dormant season. In wet season, they were high values. In additions, it is investigated whether these parameters have seasonal variations or not. Less

  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] Hideki Takizawa et al.: "Seasonal variation of albedo in the hill evergreen forest"Proceedings of workshop on Game-Tropics in Thailand. 208-211 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ken Yoshikawa et al.: "Relationship between water absorption and sap flow in tree trunk"J.Jap.Soc.Revegetation Technology. 25(3). 176-183 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Seiken Nakayama: "干ばつ中とその後のアブラマツ林分の水分動態"日本林学会誌. 81(4). 311-317 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Seiken Nakayama et al.: "多層根系モデルによるポット苗木の吸収量の測定と解析"日本林学会誌. 82(1). 1-6 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 瀧澤英紀: "熱帯季節林における熱・水循環"水環境と人間. 125-140 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小坂泉,瀧澤英紀: "森林樹冠上における熱エネルギ・H2O-CO2の乱流特性"日本林学会学術講演集. 110. 1005-1006 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 塚本良則: "森林・水・土の保全-湿潤変動帯の水文地形学-"朝倉書店. 138 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 塚本良則: "人間による森林の破壊と復元"東京農耕大学演習林. 314 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hideki TAKIZAWA, Masakazu SUZUKI, Chatchai TANTASIRIN, and Nipon TANGTHAM: "Seasonal variation of micrometeorogical factors in hill evergreen forest"Proceedings of 99 workshop on Game Tropics, in Thailand, Kanchanaburi, Thailand. 208-209 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izumi KOSAKA and Hideki TAKIZAWA: "Turbulent transport characteristics of sensible heat, H_2O and CO_2 above a forest canopy"Transaction of the Japanese forestry society. 110 vol.(2). 1005-1006 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takehiro ISHIWATA, Tomonori KOYANO, and Hideki TAKIZAWA: "Distribution characteristics of solar radiation in the canopy"Transaction of the Japanese forestry society. 110 vol.(2). 1007-1008 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomonori KUME, Hideki TAKIZAWA, Nipon TANGTHAM, and Masakazu SUZUKI: "Analysis of evapotranspiration based on observed the sap flow velocity of trees in tropical season forest"Transaction of the Japanese forestry society. 110 vol.(2). 1009-1010 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mitsuo SUGITA and Hideki TAKIZAWA: "Measurement of soil moisture using the TDR method"Transaction of the Japanese forestry society. 110 vol.(2). 1013-1014 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] NAKAYAMA S., KOBAYASHI T., SASAKI N., HAN H., NA Q., YANANAKA N., and TAMAI S.: "Water dynamics of Pinus tabulaeformis stand during and after a severe drought"Journal of the Japanese forestry society. 81(4). 311-317 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] NAKAYAMA S., KOBAYASHI T., and KUBOTA J.: "The measurement and analysis of water uptake by sapling root with multi-layered root system model"Journal of the Japanese forestry society. 82(1). 1-6 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izumi KOSAKA, Hideki TAKIZAWA, Masakazu SUZUKI, and Katsunori TANAKA: "Transport characteristics of sensible heat, H_2O and CO_2 in the tropical season forest"Transaction of the Japaese forestry society. 111. 379 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki TAKIZAWA, and Masakazu SUZUKI: "Relationship between leaf area and albedo in the tropical season forest"Transaction of the Japanese forestry society. 111. 647 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ken YOSHIKAWA, Masakazu SUZUKI, Hideki TAKIZAWA, Tatsuaki KOBAYASHI, and Masafumi UEDA: "Relationship between water absorption and sap flow in tree trunk"Journal of the Japanese society of revegetation technology. 25(3). 176-183 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki TAKIZAWA: "Micrometeorogical observation at the Kog-ma watershed"2000 workshop on Game Tropics, in Thailand, Game-Tropics Committee. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki TAKIZAWA: "Seasonal variation of albedo in hill evergreen forest"2000 workshop on Game Tropics, in Thailand, Game-Tropics Committee. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki TAKIZAWA: "Energy and water cycle in tropical season forest"Water environments and Mankind, University research center, Nihon university. 125-140 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki TAKIZAWA: "Mechanism of temperature and humidity formation in a forest and, canopy structure considered the pleasantness of human"Japan forest technical association. NO.7 01. 36-48 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izumi KOSAKA and Yoshinori TSUKAMOTO: "Comparison of parameters of Big-Leaf model in tropical season forest and temperate forest"Report of the forest engineering facility research center. in press. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki TAKIZAWA, Chatchai TANTASIRIN Masakazu SUZUKI, and Nipon TANGTHAM: "The climate at hill-evergreen forest on tropical monsoon region"2001 workshop on Game Tropics, in Thailand Game-Tropics Committee. in press. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izumi KOSAKA, Hideki TAKIZAWA, Kenlo NISHIDA, Masakazu SUZUKI, Chatchai TANTASIRIN, and Nipon TANGTHAM: "Seasonal variation of leaf area index (LAI) at the Kog-Ma watershed"2001 workshop on Game Tropics, in Thailand, Game-Tropics Committee. in press. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki TAKIZAWA and Izumi KOSAKA: "Seasonal variation of LAI in tropical season forest"Transaction of the Japanese forestry society. 112 in press. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Izumi KOSAKA and Hideki TAKIZAWA: "Estimates of fluxes during one year using of Big-Leaf model in tropical season forest"Transaction of the Japanese forestry society. 112 in press. (2001)

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

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Published: 2002-03-26  

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