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Faculty of Agriculture Region of Forest Environment and Sustainability Sciences Center for Innovative Agriculture |
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Related SDGs |
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TAKAGI Masahiro
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Research Areas 【 display / non-display 】
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Life Science / Forest science
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Environmental Science/Agriculture Science / Environmental dynamic analysis
Papers 【 display / non-display 】
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Anatomical and ecological characteristics of Apostasia nipponica, a basal- most orchid, in light of high mycobiont dependence Reviewed International coauthorship
Hidetaka Umata, Stephan W. Gale, Masahiro Takagi, Yuki Ogura-Tsujita
鹿児島大学演習林研究報告 49 1 - 12 2025.3
Language：English Publishing type：Research paper (bulletin of university, research institution)
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Azuma W.A., Takagi M., Uchiyama C., Ishii H.
Acta Horticulturae 1 ( 1419 ) 135 - 142 2025.2
Publishing type：Research paper (scientific journal) Publisher：Acta Horticulturae
There is concern that Japanese cedar (Cryptomeria japonica), which accounts for about 40% of plantation forest in Japan, will become unsuitable for future timber production to drought-induced growth reduction caused by climate change. Drier growing conditions may force trees to rely more on water stored in living tissue. The contribution of stored water relative to daily sap flow in whole-tree water use, is likely to be a key to hydraulic acclimation of trees to climate change. Here, we measured crown and basal sap flow using Granier sensors and point dendrometers in two clonal cultivars of Japanese cedar. The study was conducted from July, 2021 to March, 2023 at the Tano Forest Science Station in Miyazaki Prefecture, southern Japan. In both cultivars, the diurnal peak of sap flow in the crown occurred earlier than at breast height, indicating the use of water stored in stem that complemented water supply from roots to meet transpiration demand. The length of time lags shorter in the early-growth cultivar than in the intermediate-growth cultivar, suggesting stem-stored water contributed less to sustaining sap-flow in the early-growth cultivar under current environmental conditions. A diurnal pattern of stem radial expansion and contraction was observed in both cultivars, suggesting the contribution of water stored in the inner bark. The amplitude of diurnal variation was greater in the crown than at breast height for the early-growth cultivar, while there was no such difference for the intermediate-growth cultivar. When the stem was warmed at breast height, the amplitude of diurnal variation increased only for the early-growth cultivar. This suggests that higher stem temperature may increase the daily use of stem-water storage in Japanese cedar, but that sensitivity and acclimation potential may vary among cultivars.
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Fukasawa Y., Kimura S., Kominami Y., Takagi M., Matsukura K., Makoto K., Suzuki S.N., Takemoto S., Tanaka N., Jomura M., Kadowaki K., Ushio M., Kinuura H., Yamashita S.
Environmental Microbiology 27 ( 1 ) 2025.1
Publishing type：Research paper (scientific journal) Publisher：Environmental Microbiology
Oak wilt causes severe dieback of Quercus serrata, a dominant tree species in the lowlands across Japan. This study evaluated the effects of oak wilt on the wood-inhabiting fungal community and the decay rate of deadwood using a field monitoring experiment. We analysed the fungal metabarcoding community from 1200 wood samples obtained from 120 experimental logs from three forest sites at five different time points during the initial 1.5 years of the experiment. Death due to wilt significantly influenced the fungal community composition and reduced fungal diversity, likely due to the dominance of a limited number of species. The operational taxonomic unit richness, occurrence frequency, and DNA copy number of white rot fungi were also enhanced on the logs killed by wilt, depending on the sites. Structural equation modelling suggested that the wilt-initiated changes in the fungal community reduced the decay rate of oak logs. Temperature and wood moisture also affected the fungal community and log decomposition. These results suggest that, in addition to the direct effect of climate, oak wilt indirectly affects log decomposition by structuring the fungal community. Continuous monitoring is essential to evaluate the longer-term effects of oak wilt on the fungal decomposition of wood.
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Nakamura M., Terada C., Ito K., Hiura T., Shibata H., Miki T., Saitoh T.M., Takagi M., Hougen T., Matsuzaki S.i.S., Watanabe M., Tado H., Hotta N., Kosugi Y., Aiko N., Kojima N., Katagiri N., Kishimoto K., Yoshida T., Tsunoda Y., Takamiya T., Ito K., Utsumi Y., Yoshikawa T., Kenta T., Oda M., Agetsuma N., Kawai M., Fujita T., Hishi T., Shimada H., Ichie T., Hoshizaki K., Kobayashi H., Seino T., Noguchi M., Nagamatsu D., Saito H., Tateno R., Ishihara M.I., Kitagawa Y., Hisamoto Y., Homma K., Hirao T., Otani T., Toda M., Terada J., Kume T., Fukuzawa K., Takashima A., Kurose K., Fujii S., Itoh S., Ohta T., Otsuki K., Nagaike T., Hasegawa K., Makoto K., Shirahata M., Matsuki S., Hatanaka M., Suzuki S., Muro N., Yamoto T., Adachi N., Kaneko N., Yamashita T.
Ecological Research 40 ( 2 ) 228 - 242 2024.12
Language：English Publishing type：Research paper (scientific journal) Publisher：Ecological Research
Due to policies supporting large-scale expansion of plantation forestry, about 40% of the forests in Japan are planted forests, such as Japanese cedar (Cryptomeria japonica) and hinoki cypress (Chamaecyparis obtusa). We present the largest freely available EcoPlate dataset for planted forests in Japan, comprising data collected from a network of 74 planted forest sites (114 plots) in regions ranging from cool-temperate to subtropical. The EcoPlate is a 96-well microplate that contains three sets of 31 “response wells” with different carbon substrates. The utilization of each carbon substrate by the microbial community is quantified based on the color development of the well during incubation, providing a multifunctional index of the soil microbial community. Soil properties (water content, carbon, nitrogen, the carbon/nitrogen (C/N) ratio, and pH) essential for interpreting the EcoPlate results were also analyzed. Using a standardized protocol, soil was sampled between July and November 2021. A preliminary principal coordinate analysis (PCoA) was performed on the temporal integration of color density using the 31 substrates. PCo1 explained 36.5% of the variance of the overall absorbance of all substrates. A model of environmental factors, including elevation, and a model of soil properties, including pH, water content, and carbon, were the best-fit models. EcoPlate data allow us to test hypotheses related to community ecology and the ecosystem functions of the soil microbial community in planted forests on a regional scale. The complete data set for this abstract published in the Data Article section of the journal is available in electronic format in MetaCat in JaLTER at https://urldefense.com/v3/__https://jalter.diasjp.net/data/ERDP-2024-08__;!!N11eV2iwtfs!p8oNj0WnJLb6gYKUirlWGdsTEHFYT_a8EtdoTSZei7RMJWFep7zPH-bw5rfph30ebvz-339364_K8Hr_Vg$.
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Takagi M., Shinohara Y.
Journal of Forest Research 2024.9
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Forest Research
The interception of rainfall in conifer plantations has been intensively studied. However, research on broadleaved forests is limited, although the broadleaved forests dominate approximately half of forest area in Japan. Here, we compared the throughfall and stemflow of each vegetation layer to clarify interception in a naturally regenerated temperate evergreen broadleaved forest (lucidophyllous forest) and a Japanese cypress plantation over a three-year period. Both forests were approximately 100 years old and had abundant lower-layer vegetation. We found that approximately a quarter of rainfall was intercepted in both forests, although the half of that interception in the Japanese cypress plantation was owing to the abundant lower-layer vegetation. This indicated that the interception in the evergreen broadleaved forest was twice that of the Japanese cypress upper canopy. The well-developed layer structure in the evergreen broadleaved forest efficiently intercepted rainfall. From the point of view of water resource management, this study implies that both evergreen broadleaved forests and Japanese cypress plantations with abundant lower-layer vegetation can decrease the amount of water infiltrating soils.
Books 【 display / non-display 】
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Ecology of Riparian Forests in Japan
S Ito, Y Mitsuda, GP Buckley, M Takagi（ Role： Joint author , section 20 ）
Springer 2008.9
Language：English Book type：Scholarly book
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森林フィールドサイエンス（共著）
全国大学演習林協議会（ Role： Edit）
朝倉書店 2006.4
Language：Japanese Book type：Scholarly book
MISC 【 display / non-display 】
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Site characteristics of Betula ermanii range-wide provenance trials
AYE MYAT MYAT PAING, CHEN Shufen, ARAKI Kyoko, AIHARA Takaki, SARMAH Ragini, HIROTA Mitsuru, TSUMURA Yoshihiko, TOMARU Nobuhiro, HOMMA Kousuke, KADOMATSU Masahiko, YOSHIDA Toshiya, KOBAYASHI Hajime, IIO Atsuhiro, OSUMI Katsuhiro, NAGAMATSU Dai, TAKAGI Masahiro, TANEDA Haruhiko, KIMURA Noriyuki, FUKUOKA Satoshi, HISAMOTO Yoko, GOTO Susumu
66 1 - 12 2022
Language：English Publishing type：Internal/External technical report, pre-print, etc.
DOI： 10.15083/0002005446
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全国大学演習林協議会・公開森林実習「日本の森を制覇しよう」 Invited
髙木正博
森林科学 ( 91 ) 2021.2
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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大学演習林での教育研究ネットワークの最新動向 Invited
柴田英昭,高木正博 他
森林環境 2017.3
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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南九州地方を代表するヒノキ壮齢林と常緑広葉樹二次林
髙木正博
グリーンエイジ ( 478 ) 2013.10
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：日本緑化センター
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種多様性に富む照葉樹林 ‐宮崎大学田野フィールド（演習林）
髙木正博
森林科学 ( 68 ) 28 2013.6
Language：Japanese Publishing type：Research paper, summary (national, other academic conference) Publisher：日本森林学会
Presentations 【 display / non-display 】
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常緑広葉樹二次林におけるリターフォールにつ いて ―16年間の調査結果―
高木正博
第79回九州森林学会 2023.10.20
Event date： 2023.10.20
Presentation type：Oral presentation (general)
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Plasticity in nitrogen use of <i>Cryptomeria japonica</i> cultivars in Kyushu and their radial growth response to disturbance
Enoki Tsutomu, Uchiyama Christmas, Takagi Masahiro, Ugawa Shin, Nabeshima Eri, Ishii Hiroaki
The Japanese Forest Society Congress 2023.5.30 The Japanese Forest Society
Event date： 2023.5.30
Language：English Presentation type：Oral presentation (general)
[in Japanese]
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Estimating the age of heterotrophic respiration and its influence factors using radiocarbon
Atarashi-Andoh Mariko, Koarashi Jun, Liang Naishen, Takagi Kentaro, Kondo Toshiaki, Hirano Takashi, Teramoto Munemasa, Takagi Masahiro, Ishida Sachinobu, Ichii Kazuhito, Sun Lifei, Saito-Kokubu Yoko, Fujita Natsuko
The Japanese Forest Society Congress 2023.5.30 The Japanese Forest Society
Event date： 2023.5.30
Language：English Presentation type：Oral presentation (general)
[in Japanese]
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Transcriptome analysis in response to trunk heating between Japanese cedar clones with different growth characteristics
Miyazaki Yuko, Azuma Wakana A, Uchiyama Christmas, Takagi Masahiro, Ishii Hiroaki
The Japanese Forest Society Congress 2023.5.30 The Japanese Forest Society
Event date： 2023.5.30
Language：English Presentation type：Oral presentation (general)
[in Japanese]
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Driven of Tempo-Spatial Variations of Forest Soil Methane Uptake by Root Activity International conference
Lifei sun et al.
AsiaFlux 2022
Event date： 2022.7
Presentation type：Oral presentation (general)
Awards 【 display / non-display 】
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九州森林学会論文賞
2017.10 九州森林学会
高木正博
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
Grant-in-Aid for Scientific Research 【 display / non-display 】
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根リターがもたらす炭素蓄積過程の環境応答モデルの構築
Grant number：24K03067 2024.04 - 2028.03
独立行政法人日本学術振興会 科学研究費基金 基盤研究(B)
Authorship：Coinvestigator(s)
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菌類による枯死木分解が森林の更新と炭素貯留に与える影響は気候でどう変わるか
Grant number：24K01807 2024.04 - 2027.03
独立行政法人日本学術振興会 科学研究費基金 基盤研究(B)
Authorship：Coinvestigator(s)
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森林から河川へ流出する炭素量は吸収量に対してどの程度の割合なのか？
Grant number：21H02238 2021.04 - 2024.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(B)
Authorship：Principal investigator
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木部通水組織の機能形質変異から気候変動に対する樹木の生理的順化能力を評価する
Grant number：20H03031 2020.04 - 2024.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(B)
Authorship：Coinvestigator(s)
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病害虫による大量枯死が森林生態系のCO2放出におよぼす影響の解明
Grant number：17H03823 2017.04 - 2022.03
科学研究費補助金 基盤研究(B)
Authorship：Coinvestigator(s)
Other research activities 【 display / non-display 】
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森林立地学会誌における「森林・林業実務必携」の書評
2021.10
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全国森林気象データベース
2003.04 - 2017.03
全国森林気象データベースの構築