研究者詳細 - 谷川　寛樹

論文 - 谷川　寛樹

分割表示 252 件中 121 - 140 件目／全件表示 >>

Time-series analysis and prediction of building material stock and flow using 4d-GIS 査読有り

Sugimoto K., Morita H., Tanikawa H.

CUPUM 2015 - 14th International Conference on Computers in Urban Planning and Urban Management 2015年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：CUPUM 2015 - 14th International Conference on Computers in Urban Planning and Urban Management

We developed 4d-GIS, which is a database of spatial 3D GIS data with a time scale, to estimate building material stock and flow and visualize the transition of buildings in urban districts for contribution to spatial designs. By utilizing 4d-GIS, it was found that steel buildings initially accounted for 60%, but the number of reinforced concrete buildings increased. As for building material stock, it has increased from 0.35 million ton in 1961 to 97.5 million tons in 2010, because of the increase of RC buildings and vir-tualization. We predicted the building renovation for Business As Usual (BAU) and District Renewal Plan (DRP) scenarios up to 2050. The results show that building material stock does not differ much between BAU and DRP scenarios in 2050, but it was observed in the DRP scenario, building material stock increased by 0.2 million ton because buildings will be re-built collectively in units.

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人為的攪拌による土石移動量の推計に関する研究査読有り

奥岡桂次郎, 谷川寛樹

環境情報科学論文集 28 巻頁： 88 - 94 2015年

人為的攪拌による土石移動量の推計に関する研究査読有り

吉田圭介, 奥岡桂次郎, 杉本賢二, 谷川寛樹

環境情報科学論文集 2014年12月

Greening China's Wastewater Treatment Infrastructure in the Face of Rapid Development: Analysis Based on Material Stock and Flow through 2050 査読有り

Wanxin Hou, Xin Tia, Hiroki Tanikawa

Journal of Industrial Ecology, 19(1), 19 巻 ( 1 ) 頁： 129-140 2014年9月

衛星夜間光と合成開口レーダを用いた建物延床面積の推計モデルの開発査読有り

黒田将平，杉本賢二，奥岡桂次郎，谷川寛樹

土木学会論文集G (環境) 70 巻 ( 6 ) 頁： 97-106 2014年7月

China's carbon footprint: A regional perspective on the effect of transitions in consumption and production patterns 査読有り

Tian, X; Chang, M; Lin, C; Tanikawa, H

APPLIED ENERGY 123 巻頁： 19 - 28 2014年6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：Applied Energy

A better understanding of CO2 emission trends caused by domestic consumption (referred to as the carbon footprint) in China, especially in the context of changes in consumption and production patterns triggered by economic development in recent years, is important to develop effective approaches for curbing the fast-growing emissions. As the various regions in mainland China exhibit great disparities in socioeconomic factors and are thus in different stages of development, this study aims to obtain a regional map of carbon footprints in China, and address the changes, sources, and drivers of regional carbon footprints. Result indicates that regional per-capita carbon footprint varied greatly from 2.9 ton in the Southwest to 8.4 ton in Jingjin in 2007, and this disparity can be attributed to differences in regional income. On average, construction and services accounted for about 70% of the regional footprint in 2007. From a view of contributions from final demand activities, it was found that on average 56% of the regional footprint was associated with investment activity, 35% was related to household consumption, and 9% was attributable to government consumption. The results of structural decomposition show that while changes in consumption patterns have promoted rapid growth in the carbon footprint across all regions, the contribution from changes in production patterns varied widely, depending on what changes in production structure and CO2 intensity improvements were undertaken. Further CO2 intensity improvements and low-carbon optimization of the production structure will be important approaches for curbing the rapid growth of the carbon footprint across all regions of China. © 2014 Elsevier Ltd.

DOI： 10.1016/j.apenergy.2014.02.016

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Accounting for the Material Stock of Nations 査読有り Open Access

Fishman, T; Schandl, H; Tanikawa, H; Walker, P; Krausmann, F

JOURNAL OF INDUSTRIAL ECOLOGY 18 巻 ( 3 ) 頁： 407 - 420 2014年6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

National material stock (MS) accounts have been a neglected field of analysis in industrial ecology, possibly because of the difficulty in establishing such accounts. In this research, we propose a novel method to model national MS based on historical material flow data. This enables us to avoid the laborious data work involved with bottom-up accounts for stocks and to arrive at plausible levels of stock accumulation for nations. We apply the method for the United States and Japan to establish a proof of concept for two very different cases of industrial development. Looking at a period of 75 years (1930-2005), we find that per capita MS has been much higher in the United States for the entire period, but that Japan has experienced much higher growth rates throughout, in line with Japan's late industrial development. By 2005, however, both Japan and the United States arrive at a very similar level of national MS of 310 to 375 tonnes per capita, respectively. This research provides new insight into the relationship between MS and flows in national economies and enables us to extend the debate about material efficiency from a narrow perspective of throughput to a broader perspective of stocks. © 2014 The Authors.

DOI： 10.1111/jiec.12114

Estimates of Lost Material Stock of Buildings and Roads Due to the Great East Japan Earthquake and Tsunami 査読有り

Tanikawa, H; Managi, S; Lwin, CM

JOURNAL OF INDUSTRIAL ECOLOGY 18 巻 ( 3 ) 頁： 421 - 431 2014年6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

This article describes research conducted for the Japanese government in the wake of the magnitude 9.0 earthquake and tsunami that struck eastern Japan on March 11, 2011. In this study, material stock analysis (MSA) is used to examine the losses of building and infrastructure materials after this disaster. Estimates of the magnitude of material stock that has lost its social function as a result of a disaster can indicate the quantities required for reconstruction, help garner a better understanding of the volumes of waste flows generated by that disaster, and also help in the course of policy deliberations in the recovery of disaster-stricken areas. Calculations of the lost building and road materials in the five prefectures most affected were undertaken. Analysis in this study is based on the use of geographical information systems (GIS) databases and statistics; it aims to (1) describe in spatial terms what construction materials were lost, (2) estimate the amount of infrastructure material needed to rehabilitate disaster areas, and (3) indicate the amount of lost material stock that should be taken into consideration during government policy deliberations. Our analysis concludes that the material stock losses of buildings and road infrastructure are 31.8 and 2.1 million tonnes, respectively. This research approach and the use of spatial MSA can be useful for urban planners and may also convey more appropriate information about disposal based on the work of municipalities in disaster-afflicted areas. © 2014 by Yale University.

DOI： 10.1111/jiec.12126

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Modeling In-Use Steel Stock in China's Buildings and Civil Engineering Infrastructure Using Time-Series of DMSP/OLS Nighttime Lights 査読有り Open Access

Liang, HW; Tanikawa, H; Matsuno, Y; Dong, L

REMOTE SENSING 6 巻 ( 6 ) 頁： 4780 - 4800 2014年6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：Remote Sensing

China's rapid urbanization has led to increasing steel consumption for buildings and civil engineering infrastructure. The in-use steel stock in the same is considered to be closely related to social welfare and urban metabolism. Traditional approaches for determining the in-use steel stock are labor-intensive and time-consuming processes and always hindered by the availability of statistical data. To address this issue, this study proposed the use of long-term nighttime lights as a proxy to effectively estimate in-use steel stock for buildings (IUSSB) and civil engineering infrastructure (IUSSCE) at the provincial level in China. Significant relationships between nighttime lights versus IUSSB and IUSSCE were observed for provincial variables in a single year, as well as for time series variables of a single province. However, these relationships were found to differ among provinces (referred to as "inter-individual differences") and with time (referred to as"temporal differences"). Panel regression models were therefore proposed to estimate IUSSB and IUSSCE in consideration of the temporal and inter-individual differences based on a dataset covering 1992-2007. These models were validated using data for 2008, and the results showed good estimation for both IUSSB and IUSSCE. The proposed approach can be used to easily monitor the dynamic of IUSSB and IUSSCE in China. This should be critical in providing valuable information for policy making regarding regional development of buildings and infrastructure, sustainable urban resource management, and cross-boundary material recycling. © 2014 by the authors; licensee MDPI, Basel, Switzerland.

DOI： 10.3390/rs6064780

Exploring China's Materialization Process with Economic Transition: Analysis of Raw Material Consumption and Its Socioeconomic Drivers 査読有り

Wang, HM; Tian, X; Tanikawa, H; Chang, M; Hashimoto, S; Moriguchi, Y; Lu, ZW

ENVIRONMENTAL SCIENCE & TECHNOLOGY 48 巻 ( 9 ) 頁： 5025 - 5032 2014年5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：Environmental Science and Technology

Chinas rapidly growing economy is accelerating its materialization process and thereby creating serious environmental problems at both local and global levels. Understanding the key drivers behind Chinas mass consumption of raw materials is thus crucial for developing sustainable resource management and providing valuable insights into how other emerging economies may be aiming to accomplish a low resource-dependent future. Our results show that Chinas raw material consumption (RMC) rose dramatically from 11.9 billion tons in 1997 to 20.4 billion tons in 2007, at an average annual growth rate at 5.5%. In particular, nonferrous metal minerals and iron ores increased at the highest rate, while nonmetallic minerals showed the greatest proportion (over 60%). We find that Chinas accelerating materialization process is closely related to its levels of urbanization and industrialization, notably demand for raw materials in the construction, services, and heavy manufacturing sectors. The growing domestic final demand level is the strongest contributor of Chinas growth in RMC, whereas changes in final demand composition are the largest contributors to reducing it. However, the expected offsetting effect from changes in production pattern and production-related technology level, which should be the focus of future dematerialization in China, could not be found. © 2014 American Chemical Society.

DOI： 10.1021/es405812w

How does industrial structure change impact carbon dioxide emissions? A comparative analysis focusing on nine provincial regions in China 査読有り

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

ENVIRONMENTAL SCIENCE & POLICY 37 巻頁： 243 - 254 2014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：Environmental Science and Policy

China as a whole is undergoing rapid industrial structure change, but this process is proceeding in a particularly unequal manner across regions. Understanding these changes and their associated impacts on CO2 emissions in these regions is a vital step toward appropriately targeted policy making. In this paper, we conduct both regional analysis throughout the nation and case studies focused on nine typical regions in order to identify regional patterns of industrial structure change and CO2 emissions. Results indicate that structural change in primary, secondary, and tertiary sectors was highly correlated, but structural change by industrial sector did not correspond well, with the stage of economic development. The disparity in regional industrial structure impacts regional CO2 emissions substantially. First, industrial structure changes involving a shift from agriculture, mining, and light manufacturing to resource-related heavy manufacturing in many regions led to a rapid increase in CO2 emissions at the national level. Second, production structure change, especially in construction and services sectors, is an important source of CO2 emission growth in regions. Some developed regions with vastly improved input efficiency in resource-related heavy manufacturing demonstrate the immense potential for reducing CO2 emissions in regions lagging in input efficiency. Third, regions with a more developed industrial structure avoided local CO2 emissions by importing carbon-intensive products while exporting less carbon-intensive but higher-value-added products in the machinery and equipment and service sectors. Several policy implications are also discussed based on the main findings of this study. © 2013 Elsevier Ltd.

DOI： 10.1016/j.envsci.2013.10.001

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合成開口レーダと建築物面積との相関性評価査読有り

杉本賢二，奥岡桂次郎，谷川寛樹

土木学会論文集G (環境) 70 巻 ( 5 ) 頁： 79-85 2014年3月

都道府県別CO2排出量推計モデルの構築及び太陽光発電の導入効果の検討査読有り

長谷川正利, 大西暁生, 戸川卓哉, 奥岡桂次郎, 谷川寛樹

土木学会論文集G（環境） 70 巻 ( 5 ) 頁： I_157-I_165 2014年

記述言語：英語掲載種別：研究論文（学術雑誌）

持続的な発展を目指して行くうえで地球温暖化問題は大きな障壁となる．この問題を解決するためには低炭素社会への転換が必要である．都市構造物の環境負荷を検討するのであれば，その対策による効果を分かりやすくするために，各段階別でライフサイクルを考慮した分析を行うことが望ましい．そこで，本研究では日本全国のCO2排出量の将来推計をシナリオ別で行った．そして，太陽光発電や都市の集約化などの省エネ対策がCO2排出量に与える影響の比較を行った． 　この結果，現状維持型のシナリオでは2045～2049年の間のCO2排出量が1,985百万トン/5年となった．また，省エネ対策を導入した際のCO2排出量は1,250百万トン/5年となり，現状維持型のシナリオと比較して約4割のCO2排出量が削減された．その要因として，太陽光発電の導入が深く影響していることが示された．

DOI： 10.2208/jscejer.70.I_157

Multi-scale assessment of floor area disparity using spatial database : An empirical study in Japan 査読有り

Hanwei Liang, Hiroki Tanikawa

Journal of International Review of Civil Engineering 5 巻 ( 2 ) 頁： 48-55 2014年

Exploring the Characterization of Building Stock and its Relationship with Nighttime Light Distribution in Japan : A Spatial Perspective 査読有り

Hanwei Liang, Wanxin Hou, Cherry Myo Lwin, Hiroki Tanikawa

Journal of Environmental Information Science 42 巻 ( 5 ) 頁： 25-32 2014年

A comparative study on assessment of economy-wide material flow accounts and its implications in Myanmar, Bangladesh, and Philippines. 査読有り

Maung, K. N, T. Komatsu, M. F. G. Martinico-Perez, C. M. Lwin, S. Mohammad, K. Sugimoto, K. Okuoka, S. Murakami, H. Tanikawa

Journal of Environmental Information Science 42 巻 ( 5 ) 頁： 51 - 60 2014年

夜間衛星光と合成開口レーダを用いた建物延床面積の推計モデルの開発査読有り

谷川寛樹

土木学会論文集G (環境) 70 巻 2014年

都道府県別CO2排出量推計モデルの構築および太陽光発電の導入効果の検討査読有り

大西暁生, 奥岡桂次郎, 谷川寛樹

土木学会論文集G(環境）Vol.70 No.5,地球環境研究論文集第22巻巻 2014年

都市重量と循環性持続可能性評価査読有り

谷川寛樹

海外環境協力センター OECC会報 72 巻頁： 8 - 9 2014年

Exploring the Characterization of Building Stock and its Relationship with Nighttime Light Distribution in Japan : A Spatial Perspective 査読有り

谷川寛樹

Journal of Environmental Information Science 42 巻頁： 25 - 32 2014年

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