Papers - IRIE Mitsuteru
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Development of an eco-friendly bio-based granular geomaterial for the environmental restoration of Ichkeul Lake, Tunisia Reviewed International coauthorship
Hata T., Suetsugu D., Kawachi A. and Irie M
Euro-Mediterr Journal for Environmental Integration 4 ( 21 ) 2019.9
Language：English Publishing type：Research paper (scientific journal)
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Development of water turbidity index (WTI) and seasonal characteristics of total suspended matter (TSM) spatial distribution in Ichkeul Lake, a shallow brackish wetland, Northern-East Tunisia Reviewed
Ouni H., Kawachi A., Irie M. Ben M’Barek N., Tlatli N., Tarhouni J.
Environmental Earth Science 2019.3
Language：English Publishing type：Research paper (scientific journal)
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モーリタニアにおける消費者のコメ選好に関する評価 －選択実験による接近－ Reviewed
丸山優樹，入江光輝，氏家清和
フードシステム研究 25 ( 4 ) 193 - 198 2019.3
Language：Japanese Publishing type：Research paper (scientific journal)
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Resource potential of reservoir sediment for functional material for purifying drinking water
Irie M., Tafu M., Fuji M., Tarhouni J.
The Fourth International Symposium on Flash Floods in Wadi Systems 2018.12
Language：English Publishing type：Research paper (international conference proceedings)
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The Effect of Optimism Bias on Sedimentation within Japanese Reservoirs surveyed via Deep Learning Methodologies
Landwehr T., Irie M., Pahl-Wostl C.
The Fourth International Symposium on Flash Floods in Wadi Systems 2018.12
Language：English Publishing type：Research paper (scientific journal)
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Experiment of a resource-oriented agro-sanitation system for urban slum area: Case of indonesia
Sintawardani N., Ushijima K., Hamidah U., Deguchi Y., Triastuti J., Funamizu N., Irie M., Ishikawa T.
Resource-Oriented Agro-sanitation Systems: Concept, Business Model, and Technology 921 - 314 2018.7
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Resource-Oriented Agro-sanitation Systems: Concept, Business Model, and Technology
© Springer Japan KK, part of Springer Nature 2019. All rights reserved. This chapter describes case study of applicability assessment for resource-oriented agro-sanitation business for urban slum in Indonesia, based on interdisciplinary field survey, (1) economic feasibility assessment, (2) demand potential assessment, and (3) social acceptability. The value flow analysis evaluated garbage disposal cost and excreta disposal cost at 0.7 and 1.1%, respectively, of household income, which represents a reasonable cost to disposers. However, under the current disposal scheme, negative value due to excreta disposal to river appears to be passed on to downstream populations. The structure of this value flow indicates that little attention is paid to the negative externalities, indicating that a solution in this case may be difficult to obtain. The affordable initial cost of a new resource recycling system was evaluated and compared with the costs of a currently available compost toilet by evaluating equipment lifetimes and potential income streams available from the sale of human excrement fertilizers. To estimate a value for the human excrement fertilizer, real-world case study in Indonesia, in which money was paid in exchange for human urine, was referred to. The evaluated affordable initial cost derived was sufficiently comparable to the price of a cheaper composting toilet currently available in the market. This implies that such a resource recycling system is feasible even in an urban slum. Results of demand and supply assessment showed that if resource-oriented sanitation system was diffused, supply would excess demands in the circle of 32 km radius, therefore cost discussion should assume more than 32 km transportation. According to the results ofcase estimation of tea plantation, total cost for fertilizer provided by resource-oriented sanitation system is possibly competitive to the normal price of synthetic fertilizer. However, if compared to subsidized price for low-income farmers, it seems difficult to compete. Regarding social aspect, the context of Islamic law is important. Islamic authorities regarded the resource-oriented sanitation system as no problematic concept and acceptable in the context of Islamic law.
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Discussing the proprieties of the conventional assessment of flood control investment focused on the undeveloped area Reviewed International coauthorship
Maruyama Y., Nakamura T., Ahmed B., Ahmed C., Ujiie K., Irie M.
WIT Transactions on the Built Environment 184 153 - 166 2018.5
Language：English Publishing type：Research paper (scientific journal) Publisher：WIT Transactions on the Built Environment
© 2018 WIT Press. Large rivers running through arid regions but originating in tropical rain forests are considered as precious water resources along their riverbanks. However, upstream inundation due to flooding during the rainy season is a constraint for development. When flood control projects are proposed for such areas, technical hazards exist. To introduce a flood control project, Cost-Benefit Analysis (CBA) is used to evaluate the project’s effectiveness based on computational fluid dynamics (CFD) simulation that is widely adopted for decision-making. Numerous studies applying shallow water models have focused on small urbanized areas. These studies employed fine-gridded digital elevation model (DEM) in the CFD simulation for precise evaluation. In contrast, for simulating large riverbanks of undeveloped areas, coarse-gridded DEM must be used to reduce the computational time. However, this does not consider the micromorphology. Resultantly, reproducibility of the simulation is degraded. The bank of the Senegal River was selected as our study site. Conventional CFD simulation was carried out. A coarse-gridded DEM was applied to reduce the computational time, but did not show enough reproducibility. We tried to employ General Purpose Computing on Graphics Processing Unit (GPGPU), a parallel computing method, with a fine-gridded DEM. It improved the reproducibility. In addition, the preferred conventional CBA method of the Japan International Cooperative Agency was applied to the study site. Conventional CBA was developed to assess the flood control investments mostly in urbanized areas. When applying it to undeveloped areas that have lower asset values than urbanized areas, as expected, the evaluated benefit was lower than the cost of the project. However, agricultural productivity contributes to improved food security and trade balance of the country. The flood control investment related with agricultural development should consider those externalities as benefits. This motivates us to develop an appraisal method in future research.
DOI： 10.2495/FRIAR180151
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Mtibaa S., Hotta N., Irie M.
Science of the Total Environment 616-617 1 - 16 2018.3
Authorship：Last author, Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Science of the Total Environment
© 2017 Elsevier B.V. Soil erosion can be reduced through the strategic selection and placement of best management practices (BMPs) in critical source areas (CSAs). In the present study, the Soil Water Assessment Tool (SWAT) model was used to identify CSAs and investigate the effectiveness of different BMPs in reducing sediment yield in the Joumine watershed, an agricultural river catchment located in northern Tunisia. A cost-benefit analysis (CBA) was used to evaluate the cost-effectiveness of different BMP scenarios. The objective of the present study was to determine the most cost-effective management scenario for controlling sediment yield. The model performance for the simulation of streamflow and sediment yield at the outlet of the Joumine watershed was good and satisfactory, respectively. The model indicated that most of the sediment was originated from the cultivated upland area. About 34% of the catchment area consisted of CSAs that were affected by high to very high soil erosion risk (sediment yield > 10 t/ha/year). Contour ridges were found to be the most effective individual BMP in terms of sediment yield reduction. At the watershed level, implementing contour ridges in the CSAs reduced sediment yield by 59%. Combinations of BMP scenarios were more cost-effective than the contour ridges alone. Combining buffer strips (5-m width) with other BMPs depending on land slope ( > 20% slope: conversion to olive orchards; 10–20% slope: contour ridges; 5–10% slope: grass strip cropping) was the most effective approach in terms of sediment yield reduction and economic benefits. This approach reduced sediment yield by 61.84% with a benefit/cost ratio of 1.61. Compared with the cost of dredging, BMPs were more cost-effective for reducing sediment loads to the Joumine reservoir, located downstream of the catchment. Our findings may contribute to ensure the sustainability of future conservation programs in Tunisian regions.
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Adaptability Sediment in Joumine Reservoir, Tunisia, as a ceramic raw material Reviewed
Masayoshi Fuji, Junzo Tsuchimoto, Chika Takai, Ryosuke Goto, Mitsuteru Irie, Jamila Tarhouni
Euro-Mediterranean Journal for Environmental Integration 2 2017.10
Language：English Publishing type：Research paper (scientific journal)
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Trial production of porous ceramics filter made from sediments in water reservoirs for sustainable use of surface water resource in arid land Reviewed
Irie M., Taga S., Tarhouni J., Fuji M.
International Journal of Environmental Science and Development 8 ( 8 ) 549 - 556 2017.7
Language：English Publishing type：Research paper (scientific journal)
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チュニジア国Joumine貯水池堆積土を用いた浄水フィルター用容器の作製 Reviewed
藤 正督, 高井千加, 土本順造, 入江光輝, Jamila Tarhouni
沙漠研究 27 ( 4 ) 2017.7
Language：Japanese Publishing type：Research paper (scientific journal)
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未利用資源を用いたフッ素処理資材の開発と性能評価 Reviewed
袋布昌幹, 藤田沙也, 京角早織, 豊嶋剛司,高松さおり, 間中淳, 入江光輝
沙漠研究 27 ( 4 ) 2017.7
Language：Japanese Publishing type：Research paper (scientific journal)
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色情報を用いた水質調査用Androidアプリケーションの開発 Reviewed
古山彰一, 中村尊, 小林龍也, 藤島政樹, 間中淳
沙漠研究 27 ( 4 ) 2017.7
Language：Japanese Publishing type：Research paper (scientific journal)
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スマートデバイスによる携帯型オンサイト水質分析～乾燥地における硝酸態窒素測定を例として～ Reviewed
間中淳, 横田優貴, 中村尊, 古山彰一, 袋布昌幹, 入江光輝
沙漠研究 27 ( 4 ) 2017.7
Language：Japanese Publishing type：Research paper (scientific journal)
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乾燥地における貯水池堆砂問題 Reviewed
入江光輝
沙漠研究 27 ( 4 ) 2017.7
Language：Japanese Publishing type：Research paper (scientific journal)
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Kawachi A., Ishikawa T., Irie M.
Regional Studies in Marine Science 14 63 - 72 2017.7
Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Regional Studies in Marine Science
© 2017 Elsevier B.V.The life history of the soldier crab Mictyris guinotae in Amparu Tidal Lagoon on Ishigaki Island, Japan was investigated through population measurements with detailed size classifications. Surveys and measurements were carried out at 15 sampling points every 2 weeks during the 4-month incubation season starting in December 2005, and twice in April and in June 2006 when juveniles started and finished settlement, respectively, in the lagoon. Supplementary measurements were conducted every month from December 2006 to May 2007 to corroborate the results of the first experiment and to examine the growth rate of the juvenile population. The results showed that (a) the peak of incubation was from mid-January to mid-February, and the season of juvenile settlement was April to early June, which means that the duration of larval life in the ocean was about 2 months; (b) juveniles were distributed widely in the lagoon, and adults clustered to the west and south of the lagoon where the bed sediment was relatively fine with high ignition loss; (c) the survival rates of adults and juveniles in 1 year were 0.73 and 0.17, respectively, and the mean longevity of adults was about 3.7 years; (d) reproduction efficiency from eggs to juveniles was about 0.0040, which is much smaller than the survival rate of juveniles as well as adults, which means that the propagation of M. guinotae is mainly controlled by the condition that the larvae experience in the ocean.
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Summary: Impending Issues on Water Resource in Arid Region and Countermeasures
IRIE Mitsuteru
Journal of Arid Land Studies 27 ( 1 ) 23 - 24 2017
Language：Japanese Publishing type：Research paper (international conference proceedings) Publisher：The Japanese Association for Arid Land Studies
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Land cover mapping in cropland dominated area using information on vegetation phenology and multi-seasonal Landsat 8 images Reviewed
Mtibaa S., Irie M.
Euro-Mediterranean Journal for Environmental Integration 1 ( 1 ) 2016.12
Language：English Publishing type：Research paper (scientific journal)
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Evaluation of sediment solidification ability using in situ microbial functions in Ichkeul Lake, Tunisia Reviewed
Hata, T., Irie M.
Euro-Mediterranean Journal for Environmental Integration 1 ( 1 ) 2016.12
Language：English Publishing type：Research paper (scientific journal)
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Simulation of soil conservation measures using SWAT model: case of Joumine river basin, Tunisia
Mtibaa S., Irie M.
International Conference on African Large river basins Hydrology 2016.11
Language：English Publishing type：Research paper (international conference proceedings)