Last modified 9 Dec 2008
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Development of an integrated terrestrial ecosystem model for global changing prediction
While climate condition can strongly influence terrestrial ecosystem, it can also affect the climate, particularly through changes in evapotranspiration, carbon cycle, and albedo. Thus, for providing reliable predictions for the change of global climate, integrated terrestrial ecosystem models that include biogeochemical processes and vegetation dynamics would be required.
To fulfill this need, I, A. Ito, and T. Kohyama are developing a Dynamic Global Vegetation Model (DGVM) that can simulate changes in ecosystem functions (ex: carbon and water flux) as well as ecosystem structures (ex: distribution and composition). This model links several modules, which have different computation time steps. Some of the modules are functions of environmental factors, letting the model simulate ecosystem responses according to environmental changes.
See SEIB-DGVM website for any other information of this study.
[Figure] A snap shot of the simulated forest stand (30m*30m of tempelate mixed-forest). Because spatial hetero-structure plays a central role in vegetation dynamics, this model explicitly treat forest 3D structure using individual-basis modeling approach. Individual tree is composed of crown, stem, and root. Shape of crown and stem are approximated by cylinder. Simulation will be conducted on the T42 global grid (128*64), each of which contains 10 replication forests stands. Thus, assuming 1/3 of the earth surface is terrene, about 27000 independent forest stands will be independently simulated. To date, this would be the most complex ecosystem model that have ever made. It should be noted that the vast computation power of the Earth Simulator[link to other site]capacitates this project. This DGVM will be incorporated into the integrated-earth-system-model of Kyousei2 project.
In English
- Sato H (submitted)
Simulation of the vegetation structure and function in a Malaysian tropical rain forest using the individual-based dynamic vegetation model SEIB-DGVM- Sato H, Kobayashi H, Delbart N (submitted)
Modeling vegetation structure and function in an east Siberian larch forest using the dynamic vegetation model SEIB-DGVM- Ise, Hajima, Sato, and Kato (Accepted)
Simulating the two-way feedback between terrestrial ecosystems and climate: Importance of forest ecological processes on global change. In Forest Canopies: Forest Production, Ecosystem Health, and Climate Conditions. New York, NOVA.- Ise T, H. Sato (2008)
Representing subgrid-scale edaphic heterogeneity in a large-scale ecosystem model: A case study in the circumpolar boreal regions, Geophysical Research Letters 35, L20407., doi:10.1029/2008GL035701.- Sato H, Itoh A, Kohyama T (2007)
Ecological Modelling 200(3-4), 279-307.
SEIB-DGVM: A New Dynamic Global Vegetation Model using a Spatially Explicit Individual-Based Approach
[DOI link]
- Kawamiya M, Yoshikawa C, Sato H, Sudo K, Watanabe S, Matsuno T (2005)
Journal of Earth Simurator 4, 18-30.
Development of an Integrated Earth System Model on the Earth Simulator.
[PDF]- Sato H (2002)
Evolution 56(12), 2374-2382.
Invasion of unisexuals in hermaphrodite populations of animal-pollinated plants: Effects of pollination ecology and floral size-number trade-offs.
[Abstract], [PDF]- Sato H (2003)
Evolution 57(3), 690-690.
Invasion of unisexuals in hermaphrodite populations of animal-pollinated plants: effects of pollination ecology and floral size-number trade-offs (ERRATUM).
[PDF]- Sato H (2002)
American Journal of Botany 89(2), 263-269.
The role of autonomous self-pollination in the evolution of floral longevity in varieties of Impatiens hypophylla (Balsaminaceae).
[Abstract], [PDF]- Sato H, Yahara T (1999)
American Journal of Botany 86(12), 1699-1707.
Trade-offs between flower number and investment to a flower in selfing and outcrossing varieties of Impatiens hypophylla (Balsaminaceae).
[Abstract], [PDF]- Murakami N, Nishiyama T, Satoh H, Suzuki T (1997)
Plant Species Biology 12, 97-106.
Marked spatial genetic structure in three populations of a weedy fern, Pteris multifida Poir., and reestimation of its selfing rate
In Japanese
- Sato H (2008),
Japanese Journal of Ecology 58(1), 11-21.
Current status and future direction of biogeochemical models, a review- Ito A, Ichii K, Tanaka K, Sato H, Emori S, Oikawa T (2004)
Tenki 51(4), 227-239.
Land process models used in earth-system models: State-of-the-Art
1. Ecological Society of Japan.
2. Meteorological Society of Japan.
3. American Geophysical Union.
Fluent in Japanese; can read, write, and communicate in English.
Education
March 1995: B.S. of Science, The University of Tokyo.
March 1997: M.S. of Science, The Kyushu Univ., Advisor: Prof. Tetsukazu YAHARA
Thesis: "Differentiation in floral morphology and its function between two varieties of Impatiens hypophylla"
March 2000: Dr. of Science, Kyushu Univ., Advisor: Prof. Tetsukazu YAHARA
Thesis:"Evolutionary study on the mating-system differentiation between two varieties of Impatiens hypophylla (Balsaminaceae)"
Research and professional experience
1997-2000
JSPS [Japan Society for Promotion of Science] Research fellow at Kyushu Univ.
2000-2002
Postdoctoral research fellow at Biotron Institute, Kyushu Univ.
2002-
Researcher at Ecosystem Change Research Program, Frontier Research System for Global Change
