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Affiliation |
Faculty of Agriculture Field Science Center Tano Forest Science Station |
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Title |
Professor |
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External Link |
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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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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.
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Enoki T., Uchiyama C., Takagi M., Ugawa S., Nabeshima E., Ishii H.
Journal of Forest Research 2024.7
Publishing type：Research paper (scientific journal) Publisher：Journal of Forest Research
Cryptomeria japonica (Thunb. ex L. f.) D. Don is the most major plantation species in Japan, and cultivars have been developed and planted under variable environmental conditions across the country. Productivity of clonal plantations is influenced by the ability of the genotype to acclimate to edaphic- and geographic-scale variation in environmental conditions and disturbance regimes. Because all individuals are genetically identical in a clonal plantation, the trait differences among individuals represent phenotypic plasticity. Here, we investigated how phenotypic plasticity and response to disturbance vary among cutting cultivars of C. japonica. We compared tree height, leaf morphology, nitrogen content, and frequency/intensity of growth-release observed in tree rings after thinning and disturbance among six cutting cultivars in 45-year-old provenance trials in south-western Japan. Nitrogen use efficiency was higher in the site where maximum tree height (Hmax) was taller, while shoot mass per area (SMA) was larger in the site where Hmax was shorter. Cultivars that grew well had high leaf nitrogen content (NG) and showed more efficient nitrogen use with high nitrogen-resorption efficiency (NRE). Yabukuguri, an intermediate-growth cultivar, was characterized by large SMA and greater plasticity in SMA and tree height in response to topographical and regional variation, as well as greater intensity of growth-release in tree-ring series indicating growth resilience following disturbance. Our results provide guidelines for selecting cultivars with high acclimation potential and resilience to environmental perturbation, which is important for sustaining plantation forests in uncertain environmental conditions expected by future climate change.
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Climate-related variation in leaf size and phenology of Betula ermanii in multiple common gardens Reviewed
Aihara T., Araki K., Sarmah R., Cai Y., Paing A.M.M., Goto S., Hisamoto Y., Taneda H., Tomaru N., Homma K., Takagi M., Yoshida T., Iio A., Nagamatsu D., Kobayashi H., Hirota M., Tsumura Y.
Journal of Forest Research 2023.12
Publishing type：Research paper (scientific journal) Publisher：Journal of Forest Research
Leaf phenology and properties are the vital traits of productivity and fitness of individual trees. Understanding the climatic conditions associated with the trait variation is essential for evaluation of the tree species’ capacity to face and adapt to environmental change. This study focused on the habits of the tree species in the alpine forests where they are experiencing some of the highest rates of warming under recent climate change. Thus, we examined the climate-related variation in leaf area, specific leaf area (SLA) and the timing of bud break in common gardens of Betula ermanii across a wide latitudinal range, as well as their height that was strongly correlated with leaf traits. Based on analysis of variance, all recorded traits were found to be genetically controlled, and leaf area was most strongly affected by genetic factors. Traits of saplings from higher latitudinal populations included taller height, larger leaf area, larger SLA and earlier bud break. Leaf area of B. ermanii saplings was strongly correlated with the height of the saplings, as taller saplings exhibited larger leaves. Saplings derived from regions with fewer precipitation in summer showed taller height and larger leaves. In contrast, we could not observe significant associations between SLA and timing of bud break, and any climatic variable for two experimental years. Increasing earliness of bud break of B. ermanii with increases in latitude was likely to associate with the gradients of photoperiod. Climate gradients between populations seemed to contribute to the geographic variation in the height, leaf and phenological traits of B. ermanii.
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Aihara T., Araki K., Onuma Y., Cai Y., Paing A.M.M., Goto S., Hisamoto Y., Tomaru N., Homma K., Takagi M., Yoshida T., Iio A., Nagamatsu D., Kobayashi H., Hirota M., Uchiyama K., Tsumura Y.
Heredity 2023.9
Publishing type：Research paper (scientific journal) Publisher：Heredity
The reduced growth performance of individuals from range edges is a common phenomenon in various taxa, and considered to be an evolutionary factor that limits the species’ range. However, most studies did not distinguish between two mechanisms that can lead to this reduction: genetic load and adaptive selection to harsh conditions. To address this lack of understanding, we investigated the climatic and genetic factors underlying the growth performance of Betula ermanii saplings transplanted from 11 populations including high-altitude edge and low-latitude edge population. We estimated the climatic position of the populations within the overall B. ermanii’s distribution, and the genetic composition and diversity using restriction-site associated DNA sequencing, and measured survival, growth rates and individual size of the saplings. The high-altitude edge population (APW) was located below the 95% significance interval for the mean annual temperature range, but did not show any distinctive genetic characteristics. In contrast, the low-latitude edge population (SHK) exhibited a high level of linkage disequilibrium, low genetic diversity, a distinct genetic composition from the other populations, and a high relatedness coefficient. Both APW and SHK saplings displayed lower survival rates, heights and diameters, while SHK saplings also exhibited lower growth rates than the other populations’ saplings. The low heights and diameters of APW saplings was likely the result of adaptive selection to harsh conditions, while the low survival and growth rates of SHK saplings was likely the result of genetic load. Our findings shed light on the mechanisms underlying the reduced growth performance of range-edge populations.
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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
Miscellaneous Information of The University of Tokyo Forests 66 1 - 12 2022.10
Language：English Publishing type：Research paper (bulletin of university, research institution)
DOI： 10.15083/0002005446
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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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)
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Updated Data-Driven Estimation of Soil Respiration in Japan: Development and Intercomparison International conference
Yamanuki H. et al.
AsiaFlux 2022
Event date： 2022.7
Presentation type：Oral presentation (general)
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Factors of spatial variation in soil CH4 uptake rate in forests in Western Honshu International conference
Teramoto M. et al.
JpGU Meeting 2022
Event date： 2022.5
Presentation type：Oral presentation (general)
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Impacts of experiment warming on soil CO 2 emissions and CH 4 uptake in Japanese forests International coauthorship International conference
孫力飛 ほか
JpGU Meeting 2022
Event date： 2022.5
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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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)
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水資源保全のための林分密度管理図の調整
Grant number：26292088 2014.04 - 2017.03
科学研究費補助金 基盤研究(B)
Authorship：Coinvestigator(s)
針葉樹人工林の蒸発散量の測定
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渓畔林ネットワーク整備を基軸とした集水域森林管理手法の開発
Grant number：25252029 2013.01 - 2017.03
科学研究費補助金 基盤研究(A)
Authorship：Coinvestigator(s)
渓畔林ネットワーク整備を基軸とした集水域森林管理手法の開発
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