J-GLOBAL         Last updated: Jan 11, 2018 at 09:27
National Institute for Environmental Studies
Center for Global Environmental Research
Job title
Senior Researcher
Doctor of Engineering


 Environmental resources in Asia are being depleted and degraded, and are deteriorating rapidly because of various human activities, and it is therefore important to assess and predict ecosystem functions quantitatively and make scientifically-sound policy recommendations for sustainable development. Accordingly, it can be a very powerful tool to develop and apply an integrated water-material-energy cycle model with an interface between environmental-resource database composed of ecosystems in air, forest, farm, urban, river, lake, groundwater, and sea areas. With a focus on East Asian catchments of various scales, I have been developing methods for assessing and predicting the changes in ecosystem functions with the changes in water, thermal, and material cycles by integrating ground-based observation, GIS data, satellite data, and distributed process models (NICE: National Integrated Catchment-based Eco-hydrology model).
 In the future, I am going to develop vegetation growth and urban models, and clarify the water, thermal, and material cycles in catchment ecosystems by integrating the terrestrial, atmospheric, and oceanic models with upscaling and downscaling procedures (including integration with turbulence models). In Asia, the impact of urban regions on the water, thermal, and material cycles in catchments has been increasing on an annual basis, and it is necessary to aim for economic development in accordance with nature. I will also work on assessment and predictions using a model simulation with technological and political inventories and scenarios.
 Please read the following articles for more details of the initial stage of the process-based NICE model development.

-Governing Equation of NICE-
 Part I describes the original NICE, which includes the interaction between surface water and groundwater and assimilates land-surface processes describing vegetation phenology with satellite data. Then, this volume describes NICE-AGR, which couples with agricultural models;
Nakayama, T., Watanabe, M. 2004. Water Resour. Res. 40(8), W08402.
Nakayama, T., Watanabe, M. 2006. Hydrol. Earth Syst. Sci. Discuss. 3, 2101-2144.
Nakayama, T., et al. 2006. Hydrolol. Process. 20(16), 3441-3466.
NIES News Vol.23.3 (in Japanese)
-Simulation of catchment ecosystem by using process-based model; Assessment of recovery of Kushiro Wetland ecosystem-

-For Nature Restoration and Urban Regeneration-
 Part II describes NICE-LAKE coupling with lake model, NICE-MASS coupling with sediment and nutrient transport model, and NICE-VEG coupling with vegetation succession model, respectively;
Nakayama, T., et al. 2007. Sci. Total Environ. 373(1), 270-288.
Nakayama, T. 2008a. Ecol. Model. 215, 225-236.
Nakayama, T. 2008b. Forest Ecol. Manag. 256, 1927-1938.
Nakayama, T., Watanabe, M. 2008a. Hydrol. Process. 22, 1150-1172.
Nakayama, T. 2010. River Res. Applic. 26(3), 305-321.
Nakayama, T. 2012a. Hydrol. Process. 26(16), 2455-2469.
Nakayama, T. 2013. Ecohydrol. Hydrobiol. 13, 62-72.

-Application of NICE to Urban Areas in Japan and China-
 Part III describes NICE-URBAN, which couples with urban canopy model and regional atmospheric model;
Nakayama, T., Fujita, T. 2010. Landscape Urban Plan. 96, 57-67.
Nakayama, T., et al. 2010. Global Planet. Change 73, 172-185.
Nakayama, T. 2011a. Hydrol. Process. 25, 2679-2693.
Nakayama, T., Hashimoto, S. 2011. Environ. Pollut. 159, 2164-2173.
Nakayama, T. 2012b. Water Sci. Technol. 66(2), 409-414.
Nakayama, T., et al. 2012. Hydrol. Process. 26(16), 2431-2444.

-Continental scale in Changjiang and Yellow River Basins-
 Part IV describes the application of NICE to Changjiang and Yellow River basins, and the prediction of ecosystem change after constructions of Three Gorges Dam (TGD) and South-to-North Water Transfer Project (SNWTP);
Nakayama, T., Watanabe, M. 2008b. Global Planet. Change 63, 9-22.
Nakayama, T. 2011b. Agr. Forest Meteorol. 151, 314-327.
Nakayama, T. 2012c. Proc. Environ. Sci. 13, 87-94.
Nakayama, T., Shankman, D. 2013a. Global Planet. Change 100, 38-50.
Nakayama, T., Shankman, D. 2013b. Hydrol. Process. 27(23), 3350-3362.
CGER News Vol.24.9 (in Japanese)
-Evaluation of uneven water resource and relation between anthropogenic water withdrawal and ecosystem degradation in Changjiang and Yellow River basins-

 Recently, the author developed an advanced model coupling eco-hydrology and biogeochemical cycle (NICE-BGC). This new model incorporates complex coupling of hydrologic-carbon cycle in terrestrial-aquatic linkages and interplay between inorganic and organic carbon during the whole process of carbon cycling. The model result shows carbon flux budgets in major rivers, both horizontal transports and vertical fluxes. The result also implies difference between inverse techniques and budget estimates can be explained to some extent by net source from inland water;
Nakayama, T. 2016. Ecohydrol. Hydrobiol. 16, 138-148.
Nakayama, T. 2017a. J. Geophys. Res. Biogeosci. 122, 966-988.
Nakayama, T. 2017b. Ecol. Model. 356, 151-161.
CGER News Vol.28.5 (in Japanese)
-Development of advanced eco-hydrologic and biogeochemical coupling model; Part 1 Re-evaluation of missing role of inland water on global carbon cycle-
CGER News Vol.28.5 (in Japanese)
-Development of advanced eco-hydrologic and biogeochemical coupling model; Part 2 Scaled-dependence and seasonal variations of carbon cycle-

CGER News Vol.22.8 (in Japanese)
-What is necessary for ecosystem model in the future ?-
CGER News Vol.23.1 (in Japanese)
-Toward effective application of remote sensing to evaluate hydrologic cycle-
CGER News Vol.25.8 (in Japanese)
-Role of wetland from viewpoint of water resources; Case study in Danube Delta-
CGER News Vol.27.5 (in Japanese)
-Recent development of ecosystem model; Looking back on past five years-

Research Areas


Academic & Professional Experience

Apr 2011
Senior Researcher, Center for Global Environmental Research, National Institute for Environmental Studies
Student, Dept. of Civil Engineering, Faculty
of Engineering, Kyoto University
Graduate Student, Dept. of Global Environment
Engineering, Faculty of Engineering,


Department of Global Environment Engineering, Faculty of Engineering, Kyoto University
Department of Civil Engineering, Faculty of Engineering, Kyoto University

Committee Memberships

Jan 2013
Editorial board in journal "Ecohydrology & Hydrobiology"
Jan 2008
Editorial board in journal "Ecohydrology"


Effect of macro-roughness on coherent structures by using PIV methods
Flow Modeling and Turbulence Measurements VII, pp.617-626, 1998   
Effect of the surface-wave fluctuations on coherent structures near the free surface
Prec. of 11th Congress of the IAHR-APD, pp.507-516, 1998   
Effect of turbulence components below wind water waves
Proc. of 28th IAHR Congress, Graz. IAHR, 1999 (CD-ROM)   
Fundamental study at air-water interfaces with wind shear
Proc. of 28th IAHR Congress. Graz. IAHR, 1999 (CD-ROM)   
Measurements of horizontal coherent vortices between main-channel and flood-plains by using particle-tracking velocimetry
Flow Modeling and Turbulence Measurements VI, Chen, Shih, Lienau& Kung (eds), pp.229-236, 1996   

Research Grants & Projects

Numerical Simuration of Water Environment at East Asia
Project Year: 2000   

Development of process-based NICE model

Please see the profile about NICE(National Integrated Catchment-based Eco-hydrology model) and NICE-BGC(BioGeochemical Cycle).