Quantitative reconstruction of long-term growth process for old Sugi plantation stands using historical forest management records and past aerial photos
| Project/Area Number |
18K05742
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 40010:Forest science-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Owari Toshiaki 東京大学, 大学院農学生命科学研究科(農学部), 准教授 (00292003)
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| Co-Investigator(Kenkyū-buntansha) |
石橋 整司 東京大学, 大学院農学生命科学研究科(農学部), 教授 (30212921)
廣嶋 卓也 東京大学, 大学院農学生命科学研究科(農学部), 准教授 (40302591)
當山 啓介 東京大学, 大学院農学生命科学研究科(農学部), 助教 (00613001)
中島 徹 東京大学, 大学院農学生命科学研究科(農学部), 助教 (10598775)
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| Project Period (FY) |
2018-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | スギ人工林 / 長期成長過程 / 森林経営史料 / 旧空中写真 / 固定試験地 |
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| Outline of Final Research Achievements |
In this study, we first analyzed the growth of old Sugi (Cryptomeria japonica) plantation stands using long-term measurement data from experimental plots located in university forests of East Asia. Then, we attempted quantitative reconstruction of the long-term growth process of old Sugi plantation stands using existing forest management archives and available aerial photographs. From the forest management archives of the University of Tokyo Chiba Forest, we clarified changes in forest growing stock, which is the accumulated result of forest growth in each stand age. We generated forest canopy height models from aerial photographs of the experimental plot of Sugi plantation taken by Geospatial Information Authority of Japan in 1975 and 2017 to estimate tree height of the old Sugi plantation in each year.
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| Academic Significance and Societal Importance of the Research Achievements |
気候変動に伴う成長衰退リスクへの適応策を検討する上で、スギ高齢人工林の長期的な成長特性把握は欠かせない。スギ高齢人工林の成長過程を長期間継続測定した試験地は日本でも数少ない。本研究は、長期測定データのないスギ人工林においてその成長過程を復元するための手法として、過去の森林施業計画書や森林調査簿といった森林経営史料を活用するとともに、過去の空中写真を用いた森林の3次元構造の生成を行い、スギ高齢人工林の成長パラメータの長期的変移を定量化できる可能性を示した。
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Report
(6 results)
Research Products
(28 results)
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[Presentation] Long-term growth records of Cryptomeria japonica plantations at the University of Tokyo Forests, Japan: Towards a network of experimental plots in East Asia2019
Author(s)
Owari, T., Toyama, K., Suzuki, S. N., Hiroshima, T., Ishibashi, S.
Organizer
XXV IUFRO World Congress
Related Report
Int'l Joint Research
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[Presentation] Growth prediction variability according to observation period of long-term data in old Sugi (Cryptomeria japonica) planted stands2019
Author(s)
Hiroshima, T., Toyama, K., Suzuki, S. N., Owari, T., Nakajima, T., Ishibashi, S.
Organizer
JSPS Core-to-Core Program “The 1st International Symposium of Long-term Forest Monitoring Research in Asia”
Related Report
Int'l Joint Research
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[Presentation] Using historical management records and past aerial photos to reconstruct long-term growth of Cryptomeria japonica plantations2018
Author(s)
Owari, T., Ishibashi, S., Hiroshima, T., Toyama, K., Nakajima, T., Guan, B.T., Park, P.S.
Organizer
NTU - UTokyo Joint Workshop on Long-term Monitoring and Data Analysis for Ecosystem Services in Asian University Forests
Related Report
Int'l Joint Research
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[Presentation] Local growth variations in Sugi plantations2018
Author(s)
Hiroshima, T., Karukome, T., Yonemichi, T., Suzuki, M., Tsukagoshi, T., Fujihira, K.
Organizer
NTU - UTokyo Joint Workshop on Long-term Monitoring and Data Analysis for Ecosystem Services in Asian University Forests
Related Report
Int'l Joint Research
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