Overview of section and members

Message from the Director

Welcome to the Center for Social and Environmental Systems Research!

Environmental research is aimed at solving environmental problems. Although conducting environmental research requires investigating the dynamics of natural systems, it also requires studying societies and human behavior, because human activities cause most environmental problems, and at the same time, humans suffer the consequences of the resultant damage.

The Center for Social and Environmental Systems Research focuses on the relationship between the environment and society/human behavior, and it explores ways to build a sustainable society that attains a healthy environment and the well-being of people. The United Nations Sustainable Development Goals, which have been widely acknowledged around the world, as well as the basic concept of sustainability, consist of three pillars: environmental conservation, economic development, and social stability. This vision is consistent with our standing position: we aim for a condition in which these three goals are met simultaneously. Our research themes include finding answers to the following questions: How can economic development continue while greenhouse gas emissions are reduced sufficiently to curb climate change? How can we evaluate technologies that connect energy, resources, waste treatment, and industry at a local level? What policy portfolio will allow environmental, economic, and societal goals to be achieved?

It is important also to consider the timeframe when answering these questions. Many environmental issues require a long-term perspective. As a result, a policy that could be expected to lead to the best solution as a whole in the long run might be perceived as economically burdensome in the short run. What manner of resource exploitation is consistent with the goal of intergenerational equity? We are open to discuss these questions raised above with all of you, for you are all members of a global society.

Yasuko Kameyama                                                                         
 Director, Center for Social and Environmental Systems Research

Research sections and members

Social and Environmental Systems Research Center
Name Title Keywords of research
Yasuko KAMEYAMA Director International relations, Global environmental
problems, Negotiation process
Kiyoshi TAKAHASHI Deputy Director
Head, Trans-boundary Impacts
& Mitigation Modeling Section
Climate change impacts, adaptation,
Integrated Assessment Model, limate scenario
Tsuyoshi FUJITA Principal Researcher
The University of Tokyo)
Circulating Ecological Region, SDGs Indicator
System, Urban Industrial Symbiosis
Akira HIBIKI *Group Leader
(Professor, Tohoku University)
*Environment-Economic Assessment
Collaborative Research Group
Integrated Environment and Economy Section
The focus of this section is the interaction between environmental loads and socio-economic activities. In the case of climate change mitigation policies, for example, we aim to utilize energy–-economic models to estimate the potential emissions reductions of climate mitigation policies such as a carbon tax and emissions trading. Our collaborative interactions with research institutes in other Asian countries enable us to conduct collaborative studies of mitigation strategies in those countries.
Name Title Keywords of research
Toshihiko MASUI Head Integrated Assessment Modeling, Environmental Systems,
Environmental Economics
Midori AOYAGI Principal Researcher Sociology of Risk, Survey Research, Media,
Science and Technology
Tatsuya HANAOKA Senior Researcher Integrated Assessment Modeling, Environmental
Systems Engineering, Environmental economics
Azusa OKAGAWA Senior Researcher Environmental Economics, Econometrics
Senior Researcher Integrated Assessment Model, Climate change mitigation
scenario,Renewable energy
Satish Kumar YAWALE Research Associate Residential Sector, Emission mitigation, Climate policy, 
Technology Options
Zhaoling LI Research Associate Industiral secors, Environmental economics, LPS allocation, 
Emission mitigation 
Ambiyah ABDULLAH Research Associate Environmental economics, Sustainability, IO-SAM-CGE,
International supply chain
Marissa MALAHAYATI Research Associate Environmental economics, Land-use change analysis,
Saritha VISHWANATHAN Research Associate Water-Energy Systems, Industrial Systems, Integrated
Assessment Modelling, Socio-Technical Transitions,
Public Policy

Trans-boundary Impacts & Mitigation Modeling Section
This section has developed a wide variety of models exclusively formulated to examine impacts of climate change mitigation and adaptation policies at transboundary and national scales. For instance, we are conducting research to estimate the impact of climate change on agriculture and human health.
Name Title Keywords of research
Kiyoshi TAKAHASHI Head
Deputy Director)
Climate change impacts, adaptation, Integrated
Assessment Model, limate scenario
Shuichi ASHINA Senior Researcher Designing Strategies toward Low Carbon Society by using
integrated assessment models based on mechanical
and system engineering
Junya TAKAKURA Senior Researcher Climate change impacts, Integrated assessment model,
Environmental ergonomics
Wenchao WU Research Associate Agricultural economics, Mitigation, Land use
Yuki HIRUTA Research Associate Climate change impacts and adaptation, Urban engineering,
Geo-spatial Information, Electricity demand
Lu GAO Research Associate  Environmental economics, Low-carbon society, Adaptation
& Mitigation
Chaeyeon PARK Research Associate Climate change impact & adaptation, Resilient planning,
Wildfire impact
Yujiro HIRANO Senior Researcher
(Fukushima branch)
Urban thermal environment, Energy saving,
Built environment, CO2 reduction

Regional Environmental Impact Assessment Section
For realization of transition to sustainable society, this section investigates solutions for multifarious environmental problems through development of methods and models to assess various environmental impacts at country, local and city levels.
Name Title Keywords of research
Yasuaki HIJIOKA Head
(Deputy Director,
Center for Climate
Change Adaptation)
Climate change impact, Adaptation,
Integrated assessment model
Toshiaki ICHINOSE Senior Researcher Urban environment system, Urban climatology, GIS,
Chinese environmental issues
Toshinori ARIGA Senior Researcher City planning, Transportation planning, Land use planning
Masashi OKADA Senior Researcher Climate  change impact, Adaptation, Agriculture,
Crop model
Kazutaka OKA Senior Researcher
(Center for Climate
Change Adaptation)
Climate change impact, Adaptation, Implementation,
Climate Scenario
Yoshifumi MASAGO Senior Researcher
(Center for Climate
Change Adaptation)
Water environemntal engineering, Health risk assessment,
Climate change adaptation
Yuji MASUTOMI Senior Researcher
(Center for Climate
Change Adaptation)
Climate change, air pollution, adaptation, crop modelling
Tomohiro FUJITA Researcher
(Center for Climate
Change Adaptation)
Forest ecosystem, Land use change,
Climate change adaptation
Makoto OOBA Senior Researcher
(Fukushima branch)
Forest ecosystem, Footprints, Woody biomass 
Takuya TOGAWA Senior Researcher
(Fukushima branch)
Low carbon city, Land use planning, Regional energy

Eco-society Innovation Section

This section focuses on technology development from the engineering and socio-economic perspectives. We have studied the design of energy and resources circulation systems in cities. For instance, there are technologies to use wastes generated in residential areas as an energy source in industrial facilities. We seek innovative ways to integrate solutions to various environmental problems such as climate change and waste management, using multiple disciplines including engineering and social sciences.
Name Title Keywords of research
Minoru FUJII Head Low carbon urban system, recycling, industrial
& urban symbiosis
Rintaro YAMAGUCHI Senior Researcher Natural capital, Wealth accounting, Discounting,
Environmental and resource economics 
Shinichiro ASAYAMA Senior Researcher Science and policy of climate change, Climate
geoengineering, Science and Technology Studies, Narrative
Seiya MAKI Researcher Low carbon society, Industrial symbiosis, High efficiency
energy system, Heat demand and supply analysis
Lu SUN Research Associate Waste recycling, Urban metabolism, industrial
& urban symbiosis 
Tana QIAN Research Associate Remote sensing, Environmental impact assessment,
Spatial analysis
Kei GOMI Senior Researcher
(Fukushima branch)
Low-carbon society scenario, Integrated modeling,
Planning for revitalization
Takashi TSUJI Researcher
(Fukushima branch)
Community governance, Citizen participation,
Social research, Sociaology of local community

Environmental Policy Section
This section is oriented toward seeking transition policies especially on transport and household sectors in various regions. We also study the potential of stakeholders such as environmental NGOs and citizens groups to effectively change the behavior of people.
Name Title Keywords of research
Keisuke MATSUHASHI Head Assessment and policy for sustainable societies and cities 
Yasufumi MORI Principal Researcher Theory and effects of voluntary environmental actions
by citizens and enterprises 
Izumi KUBOTA Senior Researcher Legal analysis on international environmental regime
Yuko KANAMORI Senior Researcher Modeling on relationship between lifestyle and
environmental load generation
Masahiro ISHIKAWA Research Associate Assessment of green building policies
Kyoungmin KIM Research Associate Architectural planning, Location planning,
Community-based integrated care system 
Shogo NAKAMURA Researcher
(Fukushima branch)
Development of environment assessment tool at local scale