Welcome to the Environmental System Analysis and Planning (EnSAP) Research Lab in Nagoya University!

Led by Prof. Tanikawa, Associate Prof. Shirakawa, and Assistant Prof. Okuoka


       "Weight of the City"                       
 


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Introduction: The total weight of human activity

Since 1998, the Tanikawa Laboratory in Nagoya University is estimating and evaluating the weight of human activity, and particularly attempting to elucidate how much material has been used in industrial processes. The physical weight of industrial life is reflected in buildings, roads, cars, furniture and other durable materials which provide crucial services to our society. This is the material stock of Society, which requires constant inflows of material from the Environment, and produces outflow wastes as well. Reducing the accumulated weight and improving the efficiency of the stock we already have are vital to achieving a more sustainable society.

Socio-economic Metabolism

Just like living creatures' metabolism, human society consumes materials from the environment and eventually discharges them back as wastes and emissions. Using this body analogy, societies can be said to have social metabolic profiles based on the amounts of inflows, outflows and the efficiency of the usage of materials. The Tanikawa Laboratory focuses on Multi-scale Material Stock Analysis with regard to heavy anthropogenic disturbance, on the national, regional, and city scales.

City Scale Analysis

City-scale material stock analysis is especially relevant to our everyday lives. Through this research, people can see how much material supports their lives, and city planners can recognize which areas have bigger metabolism.
Evolution of material stocks in 4d-GIS
The Tanikawa Lab has been using 4D-GIS (four dimensional geographical information systems) to analyse material stocks and local metabolism (for example, Tanikawa and Hashimoto, 2009). This study clarified material accumulation by vertical location, such as above and below ground, from the viewpoint of recyclability. By estimating the demolition curve, the life span of buildings in an urban area was found to be shorter than the national averages in both Japan and the UK. This paper also showed that in the Wakayama City centre in Japan in 2004, 47% of total construction material was stocked in underground infrastructure.

Regional, National, and Global scale Analysis

The Material Stock of Aichi Prefecture, 2005
On the national scale, decision makers require economy-wide material stock accounts in order to understand past trends of material stock development and to plan for the future. Our lab measures and creates models and scenarios of material accumulation (such as Fishman et al. 2014) in search of the great question: can countries reach material stock saturation, a sustainable state in which economic development is de-coupled from physical development?
On the other hand, developing countries need to consume more materials to keep improving their citizens' quality of life. This is leading to increased energy and material flows, and GHG emissions. Material stock analyses are also being performed for developing countries, especially China (for example Feng Shi et al. 2012). The Tanikawa Lab evaluates possibilities for ‘dematerialization’ and ‘decarbonization’ in developing countries. The researchers forecast future steel and cement demand and related resource consumption and CO2 emissions for building and transportation infrastructure, based on a material flow analysis of China. In the picture: the material stock of infrastructure in Nagoya and Aichi prefecture.

Disaster planning and management

Simulation of inundation of buildings by tsunami
Material stock and flow analysis is also useful for understanding disasters which seriously damage cities, such as the earthquake that occurred on 11 March 2011 in Japan (see Tanikawa et al. 2014). Material stock estimates include volumes of accumulated materials in cities, so material stocks in damaged areas are similar to the volume of rubble which would need treatment and transfer. These amounts of material stocks in damaged areas also indicate the quantities of material necessary to reconstruct the affected areas, to enable a return to previous levels of local human activity. In the picture: a simulation of inundation of buildings by tsunami, modeled using ArcGIS and viewed in Google Earth.


And more...
  • Material stock of buildings in Nagoya city center
    Investigate the critical issues at the meeting point of society, engineering, economics, and environment: industrial ecology.
  • Groundbreaking research using methods such as remote sensing, statistical modeling, systems dynamics, input-output (IO), human time.
  • Collaborations with other leading experts and institutions in Japan and abroad.
  • Our members participate in many domestic and international conferences and workshops every year, in oral presentations, poster sessions, and panels.
  • Our master and doctor students are eligible to take part in the Nagoya University Global Environmental Leaders Program (NUGELP).
  • Internship options in institutes and companies.
  • and much much more!

For more information about our activities, be sure to check our news, events, and Facebook pages!


(adapted and updated from the ISIE-SEM News site)


Ongoing Research Projects:
Material stock in Nagoya
  • Evaluation of Low Carbon City Policy, 2008-10
 - funded by the Ministry of Environment
  • LCS Proj > Supply and Demand of Resources and Low Carbon Development in Asia-Pacific Region
 - funded by the Ministry of Environment, 2009-13
  • Material Stock Accounting overtime for city region, 2009-12
 - funded by the Ministry of Science and Tech
  • Human time and resource productivity, 2008-11
 - funded by the Ministry of Science and Tech
  • Sustainable sound material cycle region, 2010-12
 - funded by the Ministry of Environment
  • Estimation of material stock with DMSP/OLS satellite images
 - funded by the Ministry of Science and Tech, 2010-12


Prospective researchers and students
Please click here for information!


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Lab News

  • 北京師範大学との交流ワークショップ 平成29年1月13日、名古屋大学環境総合館レクチャーホールにて中国・北京師範大学との共同ワークショップを開催しました。北京師範大学 環境学院 資源管理学部より24名の教員・学生が来学し、双方の研究紹介とディスカッションを行い親睦を深めました。We held 5th BNU-NU Workshop for Promoting inter-institutional Collaboration at our department on 13th Jan 2017. Faculties and students from ...
    投稿: 2017/01/15 20:19、若林麗
  • 受賞 / Awards 国際会議、国内会議にて研究室より3名の受賞者が出ました。The 12th Biennial International Conference of EcoBalance, Outstanding Presentation Prize, Keisuke Yoshida         Keisuke Yoshida, Keijiro Okuoka, Hiroki Taniakwa (2016.10), Study of Anthropogenic Disturbance with             Geomorphologic ChangeThe ...
    投稿: 2016/11/21 18:44、若林麗
  • ISIE SEM-AP 2016 NAGOYA 平成28年9月28日から30日, 名古屋大学ES館にて国際会議 the International Society for Industrial Ecology (ISIE) 12th Socio-Economic Metabolism section conference and 5th Asia-Pacific conference (ISIE SEM-AP 2016 NAGOYA) を開催いたしました。約180名の参加者と25の参加国を迎え、経済と資源消費の関連性、アジア地域の産業発展や持続可能性を研究対象とした 9名の基調講演 ...
    投稿: 2016/10/24 0:21、若林麗
  • 名古屋大学秋季修了式/ Graduation ceremony 平成28年9月27日、名古屋大学秋季修了式が行われ谷川研究室からは環境学研究科 国際環境人材育成プログラム (NUGELP) M2 Chansophea CHEAKさん,  Mitchell Castillion CUAさんが修了しました。卒業おめでとうございます!また、平成28年4月より着任していたTomer Fishman 研究員が9月で退任となり、アメリカ・イェール大学へ転任いたしました。Nagoya University's graduation ceremony was held on 27th September, 2016 ...
    投稿: 2016/10/26 22:38、若林麗
  • B4・M2 中間発表/Intermediate presentation for B4 and M2 平成28年9月15日、社会基盤工学専攻・環境土木工学コース 環境系の片山新太研究室・林希一郎研究室合同で、B4・M2の中間研究発表を行いました。We had a intermediate presentation for B4 and M2 students with the Arata Katayama lab and the Kiichiro Hayashi lab, Environmental and Environmental ...
    投稿: 2016/10/23 20:05、若林麗
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