篠原 慶規 (シノハラ ヨシノリ)

SHINOHARA Yoshinori

写真a

所属

農学部 森林緑地環境科学科

職名

准教授

外部リンク

学位 【 表示 / 非表示

  • 博士(農学) ( 2010年9月   九州大学 )

研究分野 【 表示 / 非表示

  • ライフサイエンス / 森林科学

 

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  • Differences in factors determining landslide hazards among three types of landslides in Japan 査読あり

    Shinohara Y., Watanabe Y.

    Natural Hazards   118 ( 2 )   1689 - 1705   2023年9月

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    担当区分:筆頭著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Natural Hazards  

    The motivation for this study was to clarify the factors that affect landslide occurrences at the national level in Japan and differences in the factors that result from landslide types. The factors that cause differences in the number of rainfall-triggered landslide disasters in 47 Japanese prefectures were examined using generalized linear models. The analysis was conducted for each of the three types (i.e., steep-slope failure, deep-seated landslide, and debris flow) of landslide disasters. For all types, the rainfall index and the number of landslide-prone areas were selected with positive coefficients while the accretionary complexes geological type was selected with negative coefficients. For steep-slope failure, forests and land for buildings were selected with negative and positive coefficients, respectively. For deep-seated landslide and debris flow, land use was seldom selected. Thus, the factors were found to have differed as a result of the landslide type. Because the number of landslides alters the fatalities and building damage in Japan, this study contributes to the prioritization of landslide countermeasures at the national level.

    DOI: 10.1007/s11069-023-06075-x

    Scopus

  • Formation Processes of Gully-side Debris-Cones Determined from Ground-Penetrating Radar (Mt. Unzen, Japan) 査読あり

    Gomez C., Hotta N., Shinohara Y., Park J.H., Tsunetaka H., Zhang M., Bradak B., Sri Hadmoko D., Budi Wibowo S., Daikai R., Yoshida M.

    Journal of Applied Geophysics   209   2023年2月

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    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 Applied Geophysics  

    Volcanic gullies develop U-shape cross-profiles due to the lahars that shape them after eruptive events. Over time, the processes of sediment-transfer change and the erosion of sub-vertical walls become a leading process. It results in debris-cones at their foot. However, the processes that generate these landforms is still unclear. Indeed, the surface is the one of a cone or a “steep debris-fan”, but are these diffusive landforms starting through progressive regressive-erosion of the wall, or do they follow an original collapse? This we do not know, and as the material is poorly-sorted with a mixture of unconsolidated fine sands to large clasts, digging a trench is not possible as it destroys the material structure. Therefore, the present contribution aims to define the development mechanisms of the side-wall debris-cones using Ground Penetrating Radar imaging, working in the Tansandani Gully at Unzen Volcano (Japan). The GPR used in the study is a Mala Ramac Pro-Ex mounted with a 500 MHz shielded antenna. The GPR signal penetrated up to 4–5 m depth and the velocity was homogeneous on average through the different material layers and at the different location, although at depth variations occurred. The structure of the units in the radargrams present units' parallel to the surface for the first 40 to 60 cm, with underneath the presence of more irregular prograding units, with eventually underneath a set of units that are structureless and often rich in blocks. The two lower structureless-units are not always present and one of the debris-cone only showed a set of rough subparallel units. This differences are the result of the debris-cones being generated by (1) at first a wall collapse or by rapid water-borne processes creating (2) bulk prograding units, which have to be put in place during a heavy-rainfall event. Finally, near the surface, the (3) thin subparallel units are most probably post-rainfall deposition, resulting from gravity process in dry-material. This can be inferred because there is no evidence of erosion or remobilization in layers and the process has been observed in the field. For the observed debris-cones, their formation is dominated by a wall collapse, which is then recovered by finer-grained units deposited sub-horizontally to the surface.

    DOI: 10.1016/j.jappgeo.2022.104919

    Scopus

  • Port construction alters dune topography and coastal forest growth: A study on forest decline due to coastal erosion 査読あり

    Iwasaki K., Nanko K., Nakata Y., Masaka K., Shinohara Y., Nitta K., Mizunaga H.

    Ecological Engineering   180   2022年7月

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

    Coastal forests are critical for protecting those living near the sea from wind, blown sand, salt spray, and tsunami. However, the sustainability of the coastal forest ecosystem is threatened by coastal erosion. To reveal the impact of erosion on coastal forest growth, we focused on the changes in coastal topography caused by port construction. The coastline has been advancing at the near side of a constructed port from the estuary (east) and retreating at the opposite (west) side since the 1980s in Ishikari, Japan. We conducted a transect survey, stem analysis, salt adhesion observation, and remote sensing analysis using airborne laser imaging detection and ranging data as well as an unmanned aerial vehicle. Results showed that the basal-area–weighted mean tree height in the east side was higher than that in the west side in 2019 and has increased by 2.82 m over the last 17 years. The tree height growth rate after the 2000s decreased in the west side, whereas the vigorous growth rate in the east side was maintained. The recent deposition of blown sand on the embryo dune was also detected on the east side. In contrast, the foredune was eroded, and the canopy height growth was inhibited toward several hundreds of meters inland from the seaward forest edge on the west side. The foredune erosion expanded from the point where the vegetation was destroyed, indicating the relevance of foredune vegetation in mitigating it. During winter, salt adhesion was higher in the eroded area, inhibiting canopy height growth. The most useful topographic variable to explain the spatial variability of the canopy height growth was the relative change in the cross-sectional area of the beach and dune upwind of the forest. These findings highlight the importance of monitoring vertical topographic changes in beach and foredune to evaluate the impact of coastal erosion on forest growth through airborne salt stress.

    DOI: 10.1016/j.ecoleng.2022.106640

    Scopus

  • The Role of Citrus Groves in Rainfall-Triggered Landslide Hazards in Uwajima, Japan 査読あり 国際共著

    Lusiana N., Shinohara Y.

    Water (Switzerland)   14 ( 13 )   2022年7月

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    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Water (Switzerland)  

    Landslides often cause deaths and severe economic losses. In general, forests play an important role in reducing landslide probability because of the stabilizing effect of the tree roots. Although fruit groves consist of trees, which are similar to forests, practical land management, such as the frequent trampling of fields by laborers and compression of the terrain, may cause such land to become prone to landslides compared with forests. Fruit groves are widely distributed in hilly regions, but few studies have examined their role in landslide initiation. This study aims at filling this gap evaluating the predisposing and triggering conditions for rainfall-triggering landslides in part of Uwajima City, Japan. A large number of landslides occurred due to a heavy rainfall event in July 2018, where citrus groves occupied about 50% of the study area. In this study, we combined geodata with a regression model to assess the landslide hazard of fruit groves in hilly regions. We developed maps for five conditioning factors: slope gradient, slope aspect, normalized difference vegetation index (NDVI), land use, and geology. Based on these five maps and a landslide inventory map, we found that the landslide area density in citrus groves was larger than in forests for the categories of slope gradient, slope aspect, NDVI, and geology. Ten logistic regression models along with different rainfall indices (i.e., 1-h, 3-h, 12-h, 24-h maximum rainfall and total rainfall) and different land use (forests or citrus groves) in addition to the other four conditioning factors were produced. The result revealed that “citrus grove” was a significant factor with a positive coefficient for all models, whereas “forest” was a negative coefficient. These results suggest that citrus groves have a higher probability of landslide initiation than forests in this study area. Similar studies targeting different sites with various types of fruit groves and several rainfall events are crucial to generalize the analysis of landslide hazard in fruit groves.

    DOI: 10.3390/w14132113

    Scopus

  • Changes in the factors contributing to the reduction of landslide fatalities between 1945 and 2019 in Japan 査読あり 国際誌

    Shinohara Y., Kume T.

    Science of the Total Environment   827   154392 - 154392   2022年6月

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    担当区分:筆頭著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science of the Total Environment  

    Landslides are natural hazards that cause severe damage and human losses. Japan has succeeded in reducing the number of landslide fatalities and is one of the few countries with long-term databases of landslide fatalities. In this study, we identified the factors that contributed to the decrease in fatalities associated with rainfall-triggered landslides in Japan between 1945 and 2019. We examined trends in landslide fatalities and six factors for Periods I, II, III, IV, and V—each period spans 15 years of the study period—and for Periods I–II, II–III, III–IV, and IV–V. We examined the trends in the number of landslides (NL) and in the ratio between the number of fatalities (NF) and the number of landslides (NF/NL), and considered fatalities as the product of the number of landslides and the probability of fatalities. The number of fatalities decreased continuously between Periods I and IV; the rate of the decrease declined over time. During Period I–II, NF/NL decreased, whereas NL remained unchanged. Decreases in the average number of household members, changes in building structure, and increases in the number of people evacuated may have contributed to the decrease in NF/NL. During Periods II–III and III–IV, NL also decreased. During Period II–III, the area of mature forests increased slowly. During Period III–IV, the implementation of structural measures (i.e., hard measures) was aggressively pursued. The factors that contributed to the decrease in landslide fatalities changed with time, suggesting that measures for reducing landslide fatalities changed according to the degree of maturity of the nation. Furthermore, we identified increases in rainfall and NL in Period V, which might indicate a future increase in landslide fatalities.

    DOI: 10.1016/j.scitotenv.2022.154392

    Scopus

    PubMed

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書籍等出版物 【 表示 / 非表示

  • 森林水文学入門

    篠原慶規( 担当: 分担執筆 ,  範囲: 蒸発散)

    朝倉書店  2022年9月 

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    記述言語:日本語 著書種別:教科書・概説・概論

  • 森林学の百科事典

    篠原 慶規( 担当: 共著)

    丸善出版  2021年1月 

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    総ページ数:694   担当ページ:災害防止と保安林(第13章 森林と災害)   記述言語:日本語 著書種別:事典・辞書

  • The necessity of sensor calibration for the precise measurement of water fluxes in forest ecosystems. IN Forest-Water Interactions

    Shin'ichi Iida, Takanori Shimizu, Yoshinori Shinohara, Shin'ichi Takeuchi, Tomo'omi Kumagai( 担当: 共著)

    Springer Nature  2020年2月 

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    総ページ数:643   担当ページ:519-536   記述言語:英語 著書種別:学術書

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MISC 【 表示 / 非表示

  • はげ山的水源涵養機能からの脱却

    篠原 慶規

    森林科学   98 ( 0 )   41 - 41   2023年6月

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    担当区分:筆頭著者   記述言語:日本語   掲載種別:記事・総説・解説・論説等(学術雑誌)   出版者・発行元:日本森林学会  

    DOI: 10.11519/jjsk.98.0_41

    CiNii Research

  • The July 2020 Rainfall-Induced Sediment Disasters in Kumamoto Prefecture, Japan

    JITOUSONO Takashi, SHINOHARA Yoshinori, SHIMIZU Osamu, TAGATA Satoshi, TERAMOTO Yukiyoshi, TORITA Eiji, NAGATANI Naomasa, NAKANO Koji, NISHIWAKI Ayato, HIRAKAWA Yasuyuki, FUKUZUKA Kozaburou, IGURA Mari, MIZUNO Hideaki, UE Hirotaka, OHISHI Hiroyuki, KAKIMOTO Tsuyoshi, KITOU Ken-ichi, KOGA Syozo, SAKAI Yusuke, SAKASHIMA Toshihiko

    砂防学会英文誌   13 ( 4 )   93 - 100   2021年4月

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    記述言語:英語   掲載種別:記事・総説・解説・論説等(学術雑誌)   出版者・発行元:公益社団法人 砂防学会  

    On July 4, 2020, heavy rainfall was observed in the southern part of Kumamoto Prefecture and the northern part of Kagoshima Prefecture. Due to heavy rainfall, floods and sediment disasters such as collapses and debris flows occurred predominantly in the Kuma River basin of Kumamoto Prefecture. We conducted field investigations at four sites in Ashikita Town and Tsunagi Town, Kumamoto Prefecture, where collapses and debris flows caused deaths. We also conducted field investigations in the Kawauchi River branch of the Kuma River, where vast amounts of sediment discharge caused damage to houses. The objectives of these investigations were to clarify the situation and mechanism of the disasters and to propose procedures to recover from the disasters. This report briefly summarizes the results of these investigations.

    DOI: 10.13101/ijece.13.93

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  • 令和2年7月豪雨による熊本県の土砂災害

    地頭薗 隆, 篠原 慶規, 清水 収, 田方 智, 寺本 行芳, 鳥田 英司, 永谷 直昌, 中濃 耕司, 西脇 彩人, 平川 泰之, 福塚 康三郎, 伊倉 万理, 水野 秀明, 植 弘隆, 大石 博之, 垣本 毅, 木藤 賢一, 古賀 省三, 坂井 佑介, 坂島 俊彦

    砂防学会誌   73 ( 4 )   41 - 50   2020年

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    記述言語:日本語   掲載種別:速報,短報,研究ノート等(学術雑誌)   出版者・発行元:公益社団法人 砂防学会  

    On July 4, 2020, heavy rainfall was observed in the southern part of Kumamoto prefecture and the northern part of Kagoshima prefecture. Due to the heavy rainfall, floods and sediment disasters such as landslides and debris flows were occurred especially in the Kuma River basin of Kumamoto prefecture. We conducted field investigations at four sites in Ashikita-town and Tsunagi-town, Kumamoto prefecture, where landslides and/or debris flows caused deaths. We also conducted field investigations in the Kawauchi River branch of the Kuma River where huge amounts of sediment discharge caused damage to houses. The objectives of these investigations were to clarify the situation and mechanism of the disasters and to propose procedures to recover from the disasters. This report briefly summarizes the results in these investigations.

    DOI: 10.11475/sabo.73.4_41

    CiNii Research

  • 大規模土砂移動に伴う災害の特徴整理と影響範囲の予測および対策に向けた課題 査読あり

    今泉 文寿,堤 大三,中谷 加奈,権田 豊,逢坂 興宏,福山 泰治郎,宮田 秀介,篠原 慶規,水野 秀明,原田 紹臣,水野 正樹

    砂防学会誌   70 ( 1 )   20 - 30   2017年5月

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    記述言語:日本語   掲載種別:記事・総説・解説・論説等(学術雑誌)  

  • 「森林環境と流域生態圏管理」

    篠原 慶規

    水文・水資源学会誌   30 ( 2 )   126 - 126   2017年

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    記述言語:日本語   掲載種別:記事・総説・解説・論説等(学術雑誌)   出版者・発行元:水文・水資源学会  

     本書は,小川滋先生が九州大学を2005年に退職された際,企画された2冊のうちの1冊である.「環境と生物」を基本テーマに,森林と水との関わり,森林の環境保全機能について網羅的に解説している。本書が取り扱うトピックスに興味を持った学生や,周辺分野の研究者が,基本的な知識,考え方を得るためにうってつけの書である.

    DOI: 10.3178/jjshwr.30.126

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講演・口頭発表等 【 表示 / 非表示

  • 令和4年台風第14 号による宮崎県の山地災害の特徴

    篠原慶規,清水収

    日本森林学会大会  2023年3月26日 

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    開催年月日: 2023年3月25日 - 2023年3月27日

    記述言語:日本語   会議種別:口頭発表(一般)  

  • 海岸林における立木の成長は海岸線の進退に影響される —石狩海岸における港湾建設後の成長量変化—

    岩崎健太・南光一樹・中田康隆・真坂一彦・篠原慶規・新田響平・水永博己

    日本海岸林学会大会  2022年10月22日 

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    開催年月日: 2022年10月

    記述言語:日本語   会議種別:口頭発表(一般)  

  • The effect of Topographical changes on debris flow reduction at Mt. Unzen

    Park JH, Shinohara Y, Hotta N, Gomez C

    砂防学会研究発表会  2022年5月11日 

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    開催年月日: 2022年5月

    記述言語:英語   会議種別:口頭発表(一般)  

  • 降雨による土砂災害発生件数の都道府県別の変動要因の解明

    篠原慶規,渡邊優太

    砂防学会研究発表会  2022年5月 

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    開催年月日: 2022年5月

    記述言語:日本語   会議種別:口頭発表(一般)  

  • Comparison of the occurrences of landslides between orange groves and forests on landslides induced by the heavy rainfall in 2018 in Uwajima City, Japan

    Lusiana N, Shinohara Y

    砂防学会研究発表会  2022年5月11日 

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    開催年月日: 2022年5月

    記述言語:英語   会議種別:口頭発表(一般)  

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受賞 【 表示 / 非表示

  • 日本森林学会奨励賞

    2017年3月   日本森林学会  

    篠原 慶規

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    受賞区分:国内学会・会議・シンポジウム等の賞  受賞国:日本国

科研費(文科省・学振・厚労省)獲得実績 【 表示 / 非表示

  • 降雨は火山災害を激化させるのか:時系列データの統合・再構築に基づく山体変形解析

    研究課題/領域番号:23K17801  2023年04月 - 2025年03月

    独立行政法人日本学術振興会  科学研究費補助金  基盤研究(C)

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    担当区分:研究分担者 

  • 土砂災害による死者数の時空間変動要因の解明

    研究課題/領域番号:21K04590  2021年04月 - 2024年03月

    独立行政法人日本学術振興会  科学研究費補助金   基盤研究(C)

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    担当区分:研究代表者 

  • 森林から河川へ流出する炭素量は吸収量に対してどの程度の割合なのか?

    研究課題/領域番号:21H02238  2021年04月 - 2024年03月

    独立行政法人日本学術振興会  科学研究費補助金  基盤研究(B)

    高木 正博、

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    担当区分:研究分担者 

  • 地上計測とドローンを用いた高時空間分解能の森林蒸散量の推定

    研究課題/領域番号:18K14492  2018年 - 2021年03月

    科学研究費補助金  若手研究(B)

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    担当区分:研究代表者 

  • 表層崩壊の危険性を評価する上で土壌水分の空間的不均一性は考慮する必要があるのか?

    研究課題/領域番号:25850109  2013年04月 - 2016年03月

    科学研究費補助金  若手研究(B)

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その他競争的資金獲得実績 【 表示 / 非表示

  • 熱赤外カメラを用いた斜面崩壊時の湧水発生状況の把握

    2018年04月 - 2019年03月

    砂防学会  若手助成 

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    担当区分:研究代表者  資金種別:競争的資金

受託研究受入実績 【 表示 / 非表示

  • 令和4年度火山噴火後の土砂流出継続期間の検討

    2022年05月 - 2023年03月

    国土交通省 九州地方整備局  一般受託研究 

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    担当区分:研究代表者  受託研究区分:一般受託研究

  • 土石流発生域の地形的特徴を考慮した土砂生産モデルの構築

    2020年05月 - 2021年03月

    国土交通省九州地方整備局  一般受託研究 

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    担当区分:研究代表者  受託研究区分:一般受託研究

共同研究実施実績 【 表示 / 非表示

  • GCOM-C 陸圏プロダクトとしての全球蒸発散指数推定アルゴリズムの開発

    2021年06月 - 2022年03月

    国立研究開発法人宇宙航空研究開発機構  学内共同研究 

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    担当区分:研究分担者  共同研究区分:国内共同研究