Search Results 1-20 of 283

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Evaluation of Water-Saving Methodologies for Rice Farming Using a Distributed Long-Term Rainfall-Runoff Model Incorporated Agricultural Ponds Detected by Multi-Temporal SAR Images in the Ibague Watershed, Colombia

FUKUI Makoto , HIRAMATSU Kazuaki , FUKUDA Shinji , PINEDA Dario , HARADA Masayoshi , TABATA Toshinori

… A distributed long–term rainfall–runoff model was developed to quantify the watershed scale impacts of water–saving measures in the Ibague watershed, Colombia. … Agricultural ponds and irrigation canals were allocated to each corresponding mesh to model irrigation management practices in the watershed. …

Journal of the Faculty of Agriculture, Kyushu University 65(2), 313-320, 2020-09

IR DOI
2

Evaluation of Shallow Landslide Potential Using SHALSTAB and 1-m DEM : A Case Study of the Tsurugi-kawa Drainage Basin, Hofu City, Yamaguchi, Japan [in Japanese]

田中靖 , 八反地剛 , 山下久美子 , 古市剛久 , 土志田正二 , ヤマシタクミコ , 古市剛久 , フルイチタカヒサ , 土志田正二 , ドシダショウジ , Tanaka Yasushi , Hattanji Tsuyoshi , Yamashita Kumiko , Furuichi Takahisa , Doshida Shoji

山口県防府市の剣川流域で2009年に発生した崩壊イベントを対象として，SHALSTABとLiDAR 1-m DEMを用いた崩壊発生状況の解析を行った。そして得られた結果にもとづいて，この流域の表層崩壊の危険度評価マップとなり得るものを作成した。その結果，地形学的に従来定性的に崩壊発生可能性が高いと予想される領域を，定量的に降水量と結び付けて抽出・可視化することができた。SHALSTABとLiDAR …

地域学研究 (33), 31-45, 2020-03

IR
3

DEVELOPMENT OF RUNOFF MODEL FOR ROTATIONAL PADDY FIELDS AND EVALUATION AT A WATERSHED SCALE [in Japanese]

髙野陽平 , 吉川夏樹 , 松下時生

水工学論文集 Annual journal of Hydraulic Engineering, JSCE 65, Ⅰ_787-792, 2020
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CHARACTERISTICS OF PRECIPITATION DOWNSCALING BY MEANS OF DEEP LEARNING METHOD [in Japanese]

永里赳義 , 石田桂 , 上田誠 , 横尾和樹 , 木山真人 , 尼崎太樹

水工学論文集 Annual journal of Hydraulic Engineering, JSCE 65, Ⅰ_373-378, 2020
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Adapting water supply systems to meet the impacts of climate change [in Japanese]

KOSAKA Koji , AKIBA Michihiro

水道システムは，気候変動によって水質，水量，水道施設に対して様々な影響を受ける可能性がある．水質への影響として，藻類の増殖による異臭味等の生物障害，消毒副生成物前駆物質濃度の上昇による消毒副生成物濃度の上昇，洪水による濁度の上昇，塩水遡上による原水への塩分の混入等が挙げられた．近年は，大雨や台風にともなう洪水によって，水道施設が大きな被害を受け，大規模な断水につながっている．水道 …

Journal of the National Institute of Public Health 69(5), 425-433, 2020

J-STAGE
6

DIVERSITY OF OFFLINE MEETING BY SOCIAL MINORITIES AND ITS DIFFERENCE DEPENDING ON POPULATION SCALE [in Japanese]

HIROSE Yoya , GOTO Haruhiko , YOSHIE Shun

… Clarifying the conditions of such reflexive cooperation means to seek the environment for social inclusion, which can provide insights for urban planning. The purpose of this paper is to clarify the diversity of "reflexive cooperation" by social minorities, and its difference depending on population scale, by focusing on offline meetings as cases which the partitions of majority and minority were projected. …

Journal of Architecture and Planning (Transactions of AIJ) 85(778), 2671-2681, 2020

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7

Geographical Study on Changes in Water Environment in Japan [in Japanese]

KODERA Koji , IGARI Yoshihiro , SAITOH Kei

Ⅰ　はじめに　地域や環境の問題は地理学の主たる対象であるが、特に水環境の変遷に関する研究においては、自然科学だけでなく人文・社会学的なアプローチも必要で、地理学的な視点や手法が果たす役割は大きい。また、細分化された諸科学・諸分野の中で、一面的・断片的な研究は増え深くもなってきたが、それらを統合して解釈し、 …

Proceedings of the General Meeting of the Association of Japanese Geographers 2020a(0), 115, 2020

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8

Verification of watershed-scale deer fence for conservation of ecosystem functions and its practicality for efficient maintenance in a cool-temperate natural forest in Ashiu, central Japan ―Ashiu Biological Conservation (ABC) Project―

FUKUSHIMA Keitaro , IKEGAWA Rintaro , ISHIHARA Masae , INOUE Mizuki , YAMASAKI Michimasa , SAKAGUCHI Shota , TAKAYANAGI Atsushi , SAKAI Masaru , NAKAGAWA Hikaru , HIRAOKA Marino , YOSHIOKA Kensei

西日本でも有数の生物多様性を誇る京都大学芦生研究林内のブナ・ミズナラ天然林では，2000年代に入りシカによる過剰採食が原因で急速に下層植生が衰退した．2006年に防鹿柵で囲んだ集水域，2017年に囲んだ集水域，防鹿柵を設置していない対照集水域の3集水域を対象に，植生・渓流水質・細粒土砂の調査を行い，集水域単位の防鹿柵設置の効果と実用性を検証した．スポット的な植物保全用の防鹿柵に比 …

Annual Report of Pro Natura Foundation Japan 29(0), 1-13, 2020

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GRACE-based terrestrial water storage anomaly estimation and its application in hydrological science [in Japanese]

SUZUKI Kazuyoshi , MATSUO Koji

陸水貯留量は，生態系，水文気候，ならびに人間活動にとって重要な水循環構成因子である。従来，陸水貯留量は，降水量，流出量，蒸発散量の残差項として扱われてきた。近年，大河川流域に限定されるが，衛星リモートセンシングによる陸水貯留量変動推定が可能となってきた。陸水貯留量は土壌水分，積雪，地表水（湖沼，湿地など），永久凍土中の氷など，陸上に貯留されているすべてのH2 …

Journal of Japanese Association of Hydrological Sciences 50(2), 39-53, 2020

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10

Effects of watershed scale on rainwater discharge from steep granitic mountains [in Japanese]

Kosugi Ken'ichirou , Masaoka Naoya , Hirota Tomotaka , Shirahige Kazuma , Yano Osamu , Nagata Yoko

　森林の水源涵養機能の評価や森林流域における土砂動態の把握には，降雨流出プロセスの理解が重要となる。近年，山体地下水が流出波形の形成に大きな役割を果たすことが指摘されているが，その役割が流域のスケールによってどのように変化するかについては知見が不足している。本研究では，花崗岩を地質とする六甲山地の西滝ヶ谷流域を対象として，流出特性の空間変動に山体地下水が及ぼす影響について検討した …

The Japanese Forest Society Congress 131(0), 159, 2020

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11

Implementation of Green Infrastructure Conducted by a Community-based Non-profit Organization in the Gowanus Canal Watershed of the City of New York [in Japanese]

TAKIZAWA Kyohei , WATANABE Takehiro

… The purpose of this case study research is to examine the area-scale implementation of green infrastructure (GI) conducted by Gowanus Canal Conservancy (GCC), a community-based non-profit organization, in the Gowanus Canal watershed of the City of New York (NYC). …

Journal of The Japanese Institute of Landscape Architecture 83(5), 661-666, 2020

J-STAGE
12

Characteristics of the 2018 Bago River Flood of Myanmar

Komori Daisuke , Toe Wai , Zin Win Win , Kawasaki Akiyuki , Sakai Nanami , Shimomura Natsumi , Harada Akira , Okuda Kohei , Win Chit Bo Bo , Thu Aye Myat , Tun Khin Yadanar

… The total precipitation during 10 days from July 22, when the flood first began at the western Bago city, was estimated approximately 753 mm and 527 mm at the Bago and Zaungts stations in the Bago river watershed. … The Bago river watershed has experienced many floods in the past, and floods on the same scale as this flood are expected to occur in the future. …

Journal of Disaster Research 15(3), 256-266, 2020

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13

Watershed Management Geomorphology Challenging Against Recurring Large-scale Flood and Sediment Disasters [in Japanese]

SUGAI TOSHIHIKO

1. 頻発する大規模水・土砂災害が突きつけた課題2014年広島豪雨、2015年関東・東北豪雨、2017年九州北部豪雨、2018年西日本豪雨、2019年台風19号による被災地を院生と訪ねた。2014、17年は斜面崩壊と土石流、201 …

Proceedings of the General Meeting of the Association of Japanese Geographers 2020s(0), 105, 2020

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14

Temporal and spatial variations in carbon and nutrient loads, ion chemistry and trophic status of the Ganga River : a watershed-scale study

Siddiqui Ekabal , Pandey Jitendra

Limnology 20(3), 255-266, 2019-08
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Future Changes in Watershed-scale Rainfall Characteristics : Application of AGCM20 to the Johor River Watershed, Malaysia (特集アナリティクス(Analytics) : 環境分野でのトレンドを追って)

矢澤大志 , Kim Sunmin , 佐藤圭輔 , 清水芳久

EICA : journal of EICA : 環境システム計測制御学会誌 23(4), 44-51, 2019
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Digital Spatial Data Construction and Land Cover Change Analysis of Terraced Paddies using 1953 Large-scale Aerial Photographs in the Middle Part of Arida River Watershed [in Japanese]

OKANO Tomoya , HARA Yuji

… In this study, we interpreted large-scale 1953 aerial photographs and constructed vector parcel dataset, and conducted spatial analysis in consideration of landforms and the current land covers. …

JOURNAL OF RURAL PLANNING ASSOCIATION 38(2), 128-135, 2019

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17

Forests and climate change mitigation in Australia

HARPER Richard , SOCHACKI Stanley

… There has also been considerable work on new approaches to reforestation of farmland including (a) forests established to produce non-traditional benefits such as watershed or biodiversity restoration via carbon sequestration, (b) methods to integrate reforestation into farming systems to reduce competitive effects and increase co-benefits. …

Journal of Arid Land Studies 29(3), 81-90, 2019

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18

Estimating watershed-scale rainwater storage under the Hiroshima sediment disaster in August 2014 [in Japanese]

Satou Hikaru , Yokoo Yoshiyuki

本研究は，河川流量データを利用して土砂災害の発生時刻と土砂災害の引き金となる流域内の雨水貯留量の閾値の関係を検討することを目的として実施した．広島県の一級河川太田川水系本流太田川の矢口第一水位観測所の集水域を対象流域とし，観測された流量データから作成した流出高データの成分分離を行い，雨水貯留量を成分別に推定した．さらに，雨水貯留量の推定値の変動を把握することで，土砂災害の発生時刻 …

Proceeding of Annual Conference 32(0), 252, 2019

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Evaluation of the Geographical Conditions of the Green Spaces Focusing on the Run-off Process of the Rain Water in Katabira River Basin, Yokohama City [in Japanese]

YOKOTA Shigehiro , ETO Nanako

<tt>横浜市内の帷子川流域を対象に，表流水の集水過程における位置の異なる緑地を微地形構成をもとに分類し，支流域・小流域レベルで立地環境を評価した。</tt>15 <tt>の支流域と</tt>629 <tt>の集水域を対象に，微地形の構成割合に応じた緑地立地類型の分布と，地形，累積流量，土地利用といった集水環境特性との関 …

Papers on Environmental Information Science ceis33(0), 271-276, 2019

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Comparing Rates of Rock Weathering and Soil Formation between Two Temperate Forest Watersheds Differing in Parent Rock and Vegetation Type

ABE Susumu S. , HARADA Takahiro , OKUMURA Hiroshi , WAKATSUKI Toshiyuki

… In the present study, the multiple regression analysis of mass balance equations of seven major geochemical elements (Al, Fe, Ca, Mg, K, Na, Si), among rock, soil, stream water, and precipitation in a watershed was used to simultaneously estimate the rates of rock weathering (RWR) and soil formation (SFR) in two template forest watersheds of Central Japan that had different types of vegetation and bedrock. …

Japan Agricultural Research Quarterly: JARQ 53(3), 169-179, 2019

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