研究者詳細 - 谷川　寛樹

論文 - 谷川　寛樹

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Evaluation of wildfire propagation susceptibility in grasslands using burned areas and multivariate logistic regression 査読有り

Cao, X; Cui, XH; Yue, M; Chen, J; Tanikawa, H; Ye, Y

INTERNATIONAL JOURNAL OF REMOTE SENSING 34 巻 ( 19 ) 頁： 6679 - 6700 2013年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：International Journal of Remote Sensing

This research simulated wildfire propagation susceptibility based on multivariate logistic regression. Moderate Resolution Imaging Spectrometer (MODIS)-derived fuel indicators and topographic factors were the independent variables, and burnt areas served as the dependent variable. MODIS data were collected daily during the wildfire seasons of April to May and September to October from 2001 to 2007 to acquire information about live and dead fuel in the Mongolia-China grasslands. The inputs for the independent parameters for wildfire propagation susceptibility modelling were the normalized difference vegetation index (NDVI), optimized soil-adjusted vegetation index (OSAVI), moisture stress index (MSI), global vegetation moisture index (GVMI), dead fuel INDEX (DFI), elevation, slope, and aspect. Multivariate logistic regression ranking indicates that DFI, MSI, DEM, and OSAVI are the top four factors, with an overall accuracy of 80%. 'Leave one out' cross-validation demonstrated that the overall accuracy of the propagation susceptibility modelling ranged from 65% to 87%. Finally, the model was used to produce 10 day average wildfire propagation susceptibility maps during the wildfire seasons of 2001-2007 and to predict the location of burned areas. This research will be useful for understanding the propagation susceptibility of wildfires in grassland areas and for creating policies for preventing wildfire spread. © 2013 Copyright Taylor and Francis Group, LLC.

DOI： 10.1080/01431161.2013.805280

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Quality Evaluation of Steel, Aluminum, and Road Material Recycled from End-of-Life Urban Buildings in Japan in Terms of Total Material Requirement 査読有り

Yamasue, E; Minamino, R; Tanikawa, H; Daigo, I; Okumura, H; Ishihara, KN; Brunner, PH

JOURNAL OF INDUSTRIAL ECOLOGY 17 巻 ( 4 ) 頁： 555 - 565 2013年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Industrial Ecology

In this study we introduce the concept of total material requirement (TMR) to quantify the quality of materials from end-of-life buildings. The TMRs for the recycling of materials (urban ore TMR [UO-TMR]) from four types of Japanese buildings ( Japanese traditional wooden structure [ JTWS], wooden frame with walls structure [ WFS ], reinforced-concrete structure [RCS], and steel-based structure [SS]) have been estimated and the trade-off between the increase in function of recycled materials such as steel made from scrap and the additional inputs of energy and materials required to create the increase in function were evaluated. Steel made from scrap, aluminum made from scrap, and road material are assumed to be recycled from steel products, aluminum products, and aggregate and cement concrete in the buildings, respectively. Case study analyses were carried out to determine the effect of recycling only aboveground materials compared to recycling both aboveground and subsurface materials. Also, the effect of varying the recycling rate of wooden demolition debris is determined. The UO-TMRs of steel made from scrap range from 4.7 kilograms per kilogram (kg/kg) to 18.2 kg/kg. Urban tailings (unrecycled components) account for the greatest proportion of the UO-TMR of steel made from scrap, and the next largest contributor is the recycling process. In the case of aluminum made from scrap, the UO-TMRs range from 22 to 196 kg/kg, with the contribution of urban tailings generally dominant, and the second largest contributor being on-site demolition and shredding. The UO-TMRs of recycled road material range from 1.04 to 1.16 kg/kg and are similar for different recycling cases and types of buildings. © 2013 by Yale University.

DOI： 10.1111/jiec.12014

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Evaluation of material stocks, GAS and NAS for infrastructure in Japan : Moving towards a sustainable stock-type society

Cherry Myo Lwin, Hiroki Tanikawa, Seiji Hashimoto

Journal of International Review of Civil Engineering 4 巻 ( 3 ) 頁： 118-127 2013年5月

Materials demand and environmental impact of buildings construction and demolition in China based on dynamic material flow analysis 査読有り

Huang, T; Shi, F; Tanikawa, H; Fei, JL; Han, J

RESOURCES CONSERVATION AND RECYCLING 72 巻頁： 91 - 101 2013年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Resources, Conservation and Recycling

Due to economic growth and improving of people's living standards, China is experiencing large scale building construction, which resulted in a shortage of domestic resource supplies and severe environmental impact. This study estimated materials demand and environmental impact from buildings in China from 1950 to 2050 based on MFA. Furthermore, the effect of prolonging the lifetime of buildings and strengthening materials recycling on reducing raw material demand, solid waste generation and CO2 emissions was investigated. The results indicated, for almost all scenarios, a strong drop in materials demand and related CO2 emissions for new buildings construction over the next years. From an environmental as well as a resource conservation point of view, this is a considerable conclusion. The iron ore and limestone demand from buildings construction will decrease around 2030, however, they always increase dependence on import for iron ore and accelerating depletion of limestone. Furthermore, prolonging lifetime of buildings and strengthening materials recycling are very effective methods to avoid more raw material consumption, waste generation and to mitigate CO2 emissions.

DOI： 10.1016/j.resconrec.2012.12.013

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An Analysis of material stocks for the construction of transport infrastructure in Japan: Moving towards a sustainable stock-type society

Cherry Myo Lwin, Hiroki Tanikawa, Seiji Hashimoto

Journal of Environmental Information Science 41 巻 ( 5 ) 頁： 63-72 2013年3月

Comparing Gross and Net Additions to Material Stock for Roadways in Japan 査読有り

Cherry Myo Lwin, Seiji Hashimoto, Hiroki Tanikawa

International Journal of Engineering and Research and Applications 3 巻 ( 1 ) 頁： 1119-1124 2013年2月

Structural decomposition analysis of the carbonization process in Beijing: A regional explanation of rapid increasing carbon dioxide emission in China 査読有り

Tian, X; Chang, M; Tanikawa, H; Shi, F; Imura, H

ENERGY POLICY 53 巻頁： 279 - 286 2013年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Energy Policy

Methods to control China's CO2 emissions under its rapid economic development process have received much attention. As the top industrialized and urbanized region in China, Beijing is a good case to show the trends of CO2 emissions in China, and examining how different drivers influence the CO2 emissions direction of Beijing can give valuable insights to other regions on dealing with the emerging climate change issues. To this end, we conducted structural decomposition analysis to quantify the contributions of technological and socio-economic factors to the rapid CO2 emissions growth in Beijing from 1995 to 2007. An increasing final demand level and production structure change led to carbonizing Beijing significantly, while energy intensity improvement was Beijing's sole prominent source on decarbonizing its economic development in 1995-2007. Further, results highlighted the importance of trading and investment in CO2 emissions variations in Beijing. The industrial structure change toward heavy manufacturing and services sectors led to the significant role of these sectors in CO2 emissions growth in Beijing. Beijing's carbonizing process is a reminder to other regions in China to reconsider the direction of their industrial structure change and implement consistent and strict energy-saving policies. © 2012 Elsevier Ltd.

DOI： 10.1016/j.enpol.2012.10.054

鬼頭祐介, 奥岡桂次郎, 韓驥, 白川博章, 谷川寛樹

環境情報科学 = Environmental information science 41 巻 ( 4 ) 頁： 79 2013年1月

地理情報を考慮した木造住宅寿命の変化による木材需給量と炭素固定量のシナリオ分析査読有り

岡崎奈津子, 奥岡桂次郎, 韓驥, 白川博章, 谷川寛樹

環境情報科学 = Environmental information science 41 巻 ( 4 ) 頁： 81 2013年1月

マテリアルストック推計のための4D GISの構築 : 名古屋市都心部を対象にしたケーススタディ査読有り

青柳淳之介, 杉本賢二, 谷川寛樹

環境情報科学 = Environmental information science 41 巻 ( 4 ) 頁： 86 2013年1月

都道府県における建築物・社会基盤施設の経年マテリアルストック推計に関する研究査読有り

田中健介, 早川容平, 奥岡桂次郎, 杉本賢二, 谷川寛樹

土木学会論文集G（環境） 69 巻 ( 6 ) 頁： II_25-II_34 2013年

記述言語：英語掲載種別：研究論文（学術雑誌）

持続可能な社会の実現のため，わが国では循環型社会形成推進基本法，施策がとられている．高度経済成長期に整備され，耐用年数を迎える建築物・社会基盤施設が今後も増加傾向にあり，これらの適切な維持管理にあたり，蓄積された資材の詳細・空間分布・集積傾向の把握が急務とされている．そこで本研究では，建築物・社会基盤施設を対象に各都道府県へと投入・蓄積される資材量を統計情報・地理数値情報の二種類のデータを用い，蓄積量の推移と空間分布を明らかにした．この結果，1965年時点で72億トンであった社会基盤ストックは2010年では206億トンに増加し，約2.8倍となり，構造別では建築物と道路が，資材別ではコンクリートと骨材が大きな割合を示した．

DOI： 10.2208/jscejer.69.II_25

持続可能な社会へ向けたCO2排出量及びマテリアルストック・フローの将来分析―北陸三県の市町村を対象として― 査読有り

長谷川正利, 大西暁生, 奥岡桂次郎, 戸川卓哉, 谷川寛樹

土木学会論文集G（環境） 69 巻 ( 6 ) 頁： II_13-II_23 2013年

記述言語：英語掲載種別：研究論文（学術雑誌）

持続可能な社会を達成するためには，将来のCO2排出量及びマテリアルストック・フローをできる限り詳細に把握する必要がある．そこで，本研究では北陸三県の市町村を対象に，将来のCO2排出量及びマテリアルストック・フローの推計をシナリオ別で行った．この結果，活力を促進し環境技術を導入した「Bシナリオ/技術導入有り」が2050年時点での北陸三県におけるCO2排出量及びマテリアルストック・フローを最も少なく抑えられることが分かり，その量は，CO2排出量30.5Mt，マテリアル投入量7.5Mt，マテリアルストック426.2Mt，マテリアル廃棄量19.9Mtとなった．また，その要因として，出生率の低下や都市の集約化，住宅の長寿命化が深く影響していることが示された．

DOI： 10.2208/jscejer.69.II_13

PALSARを用いた建築物の空間分布に関する研究査読有り

杉本賢二, 奥岡桂次郎, 谷川寛樹

環境情報科学論文集 27 巻 ( 0 ) 頁： 85-90 2013年

記述言語：英語掲載種別：研究論文（学術雑誌）

都市の持続的な発展を維持するためには，人間活動で使用される資源の量とその挙動を把握することが重要である。しかし，発展途上国では統計データの入手可能性や精度において課題があるため，世界全体で適用可能なデータが必要となる。本研究では，愛知県を対象として，人工衛星による観測値であるPALSARデータと，実際の建築物分布とを比較して両者の相関性について検証を行った。その結果，衛星画像の分解能よりも大きいサイズで集計することで固有のノイズが軽減され，相関係数が高くなることが示された。また，土地被覆データを用いて高さのある地物である樹木が存在している森林域を除外することにより，さらに強い相関が得られることが明らかとなった。

DOI： 10.11492/ceispapers.ceis27.0_85

中国の土地利用変化による建築マテリアル消費に関する研究‐社会経済分析と地理空間分析を用いて‐ 査読有り

環境情報科学学術研究論文集 26 巻頁： 43-48 2012年11月

東海三県における建設系廃棄物の地域循環圏に関する基礎的研究査読有り

奥岡桂次郎，三宅悠介，大西暁生，韓驥，白川博章，谷川寛樹

土木学会論文集G（環境） 68 巻 ( 6 ) 頁： 147-154 2012年10月

全国都道府県における都市構造物マテリアルストック需要量の将来シナリオ分析査読有り

大西暁生，河村直幸，奥岡桂次郎，石峰，谷川寛樹

土木学会論文集G（環境） 68 巻 ( 5 ) 頁： 1-13 2012年9月

夜間光衛星画像とGISを用いた建築用鋼材蓄積量の推計査読有り

田口現貴，許峰旗，谷川寛樹，松野泰也

鉄と鋼 98 巻 ( 8 ) 頁： 62-68 2012年8月

Regional disparity in CO2 emissions: assessing sectoral impacts on the CO2-emission structure among regions of mainland China 査読有り

Tian X, Chang M, Tanikawa H, Shi F, Imura H

Journal of Industrial Ecology 16 巻 ( 4 ) 頁： 612-622 2012年8月

Toward a Low Carbon Dematerialization Society: Measuring the Materials Demand and CO2 Emissions of Building and Transport Infrastructure Construction in China 査読有り

Feng Shi, Tao Huang, Hiroki Tanikawa, Ji Han, Seiji Hashimoto, and Yuichi Moriguchi

Journal of Industrial Ecology 16 巻 ( 4 ) 頁： 493-505 2012年8月

Estimation of Steel Use in Buildings by Night Time Light Image and GIS Open Access

Taguchi, G; Hsu, FC; Tanikawa, H; Matsuno, Y

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN 98 巻 ( 8 ) 頁： 450 - 456 2012年8月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

Steel is the most widely used material among all metals. As the concern about effective use of the in-use steel stock as secondary resource grows, numerous studies analyzing the flow and stock of steel have been conducted. Though top-down and bottom-up approaches have been employed in material flow analysis, the applicability of these approaches is largely restricted by the data availability. To overcome this problem, we have proposed a method for estimating in-use steel stock based on satellite images. Our previous studies had shown effective regression of steel stock in buildings and nighttime lights on country and sub-national level. However, the relationship has not been examined in micro level, i.e. building stocks and pixels. Therefore, in this study, geographic information system (GIS) was used to estimate the in-use steel stock for buildings in Tokyo, Japan. The volume of buildings in 145 areas with 1 km square in Tokyo was calculated with GIS. Then, the correlation was investigated between the building volume, in-use building steel stock and the radiance of nighttime light. As the result, building volume and in-use building steel stock were found to be highly correlated with the radiance of nighttime light.

DOI： 10.2355/tetsutohagane.98.450

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論文 - 谷川 寛樹

<谷川　寛樹>

論文 - 谷川　寛樹