Comprehensive understanding of ecology of saplings using functional-structural models

• Project/Area Number: 25450205
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Chiba University
• Principal Investigator: Kiyoshi Umeki 千葉大学, 園芸学研究科, 准教授 (50376365)
• Co-Investigator(Kenkyū-buntansha): MIYAZAWA Yoshiyuki 九州大学, 東アジア環境研究機構, 研究員 (80467943)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 機能的・構造的植物モデル / 当年シュートの特徴 / 一次枝成長のモデル化 / 葉形質時系列変化のモデル化 / 光合成速度のモデル化 / 個体蒸散速度の測定

Outline of Final Research Achievements

To develop functional-structural models for saplings of 5 broad-leaf species (hereafter, target species), we developed a method to estimate leaf traits (chlorophyll and nitrogen contents) of the target species non-destructively. Using this method, we measured and modeled temporal changes in these traits in response to leaf age and season. We also clarified patterns of current-year shoots of saplings of the target species based on detailed measurements of 3D structures. We, then, modeled growth of first-order branches as functions of environmental conditional of the first-order branches and individuals. In the analysis of branch growth, interactions among branches were detected. Finally, we developed two functional-structural models: in the first model a tree comprises of first-order branches and light interception and photosynthesis are calculated in a voxelized space at the first-order branch, individual, and stand levels, in the second model, a leaf comprises small polygons.

Research Products

• [Journal Article] Disentangling long- and short-term changes in perennial organ functions in seasonal environments: a model of foliar chlorophyll and nitrogen in saplings of four evergreen broad-leaved trees (2015)
  • Author(s): Mizusaki, D., Umeki, K., Honjo, T.
  • Journal Title: Photosynthetica Volume: 53 Issue: 3 Pages: 356-368
  • DOI: 10.1007/s11099-015-0145-y
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Modeling qualitative and quantitative elements of branch growth in saplings of four evergreen broad-leaved tree species growing in a temperate Japanese forest. (2014)
  • Author(s): Rahman, L. Umeki, K., Honjo, T.
  • Journal Title: Trees - Structure and Function Volume: 29 Issue: 5 Pages: 1539-1552
  • DOI: 10.1007/s00468-014-1064-4
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Comparison of the growth traits of a commercial pioneer tree species, paper mulberry (Broussonetia papyrifera L. Vent.), with those of shade-tolerant tree species: investigation of the ecophysiological mechanisms underlying shade-intolerance. (2014)
  • Author(s): Miyazawa, Y., Manythong, C., Fukuda, S., Ogata, K.
  • Journal Title: Agroforestry Systems Volume: 88 Issue: 5 Pages: 907-919
  • DOI: 10.1007/s10457-014-9735-0
  • Peer Reviewed
• [Journal Article] Implications of leaf-scale physiology for the tree transpiration characteristics under seasonal flooding and drought in central Cambodia. (2014)
  • Author(s): Miyazawa, Y., Tateishi, M., Komatsu, H., Iwanaga, F., Mizoue, N., Ma, V., Sokh, H., Kumagai, T.
  • Journal Title: Agricultural and Forest Meteorology Volume: 198-199 Pages: 221-231
  • DOI: 10.1016/j.agrformet.2014.08.013
  • Peer Reviewed
• [Journal Article] Tropical tree water use under seasonal waterlogging and drought in central Cambodia. (2014)
  • Author(s): Miyazawa, Y., Tateishi, M., Komatsu, H., Ma, V., Kajisa, T., Sokh, H., Mizoue, N., Kumagai, T.
  • Journal Title: Journal of Hydrology Volume: 515 Pages: 81-89
  • DOI: 10.1016/j.jhydrol.2014.04.049
  • Peer Reviewed
• [Journal Article] Transpiration characteristics of a rubber plantation in central Cambodia. (2014)
  • Author(s): Kobayashi, N., Kumagai, T., Miyazawa, Y., Matsumoto, K., Tateishi, M., Lim, T.K., Mudd, R.G., Ziegler, A.D., Giambelluca, T.W., Song, Y.
  • Journal Title: Tree Physiology Volume: 34 Issue: 3 Pages: 285-301
  • DOI: 10.1093/treephys/tpu009
  • Peer Reviewed
• [Journal Article] stimation of annual forest evapotranspiration from a coniferous plantation watershed in Japan (1): Water use components in Japanese cedar stands. (2014)
  • Author(s): Kumagai, T., Tateishi, M., Miyazawa, Y., Kobayashi, M., Yoshifuji, N., Komatsu, H., Shimizu, T.
  • Journal Title: Journal of Hydrology Volume: 508 Pages: 66-76
  • DOI: 10.1016/j.jhydrol.2013.10.047
  • Peer Reviewed
• [Journal Article] Architectural differences among shaded saplings of four evergreen broad-leaved tree species in Japan. (2013)
  • Author(s): Rahman, L., Umeki, K., Honjo, T.
  • Journal Title: Environmental Information Science Volume: 27 Pages: 5-10
  • NAID: 130005162689
  • Peer Reviewed
• [Journal Article] Simulation of canopy CO2/H2O fluxes for a rubber (Hevea brasiliensis) plantation in central Cambodia: the effect of the regular spacing of planted trees. (2013)
  • Author(s): Kumagai, T., Mudd, R.G., Miyazawa, Y., Liu, W., Giambelluca, T.W., Kobayashi, N., Lim, T.K., Jomura, M., Matsumoto, K., Huang, M., Chen, Q., Ziegler, A., Yin, S.
  • Journal Title: Ecological Modelling Volume: 265 Pages: 124-135
  • DOI: 10.1016/j.ecolmodel.2013.06.016
  • Peer Reviewed
• [Presentation] 葉の配置と向きが稚樹のガス交換に及ぼす影響の評価 (2016)
  • Author(s): 宮沢良行，梅木清
  • Organizer: 日本生態学会大会
  • Place of Presentation: 仙台国際センター（宮城県、仙台市）
  • Year and Date: 2016-03-20
• [Presentation] Terrestrial LiDAR-based tree/stand model that can simulate light interception and photosynthesis of branches, individuals, and a stand. (2013)
  • Author(s): Umeki, K., Kato, A.
  • Organizer: 7th International Conference on Functional―Structural Plant Models
  • Place of Presentation: Saariselka, Finland
• [Book] Procedia Environmental Sciences:FOUR DECADES OF PROGRESS IN MONITORING AND MODELING OF PROCESSES IN THE SOIL-PLANT-ATMOSPHERE SYSTEM: APPLICATIONS AND CHALLENGES Book Series 19 (2013)
  • Author(s): Miyazawa, Y., Kobayashi, N., Mudd, R.G., Tateishi, M., Lim, T., Mizoue, N., Giambelluca, T.W., Kumagai, T.
  • Total Pages: 966
  • Publisher: Elsevier