篠原 慶規 (シノハラ ヨシノリ)

SHINOHARA Yoshinori

写真a

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 )

 

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  • Stemflow estimation models for Japanese cedar and cypress plantations using common forest inventory data 査読あり

    Jeong S., Otsuki K., Shinohara Y., Inoue A., Ichihashi R.

    Agricultural and Forest Meteorology   290   107997   2020年8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:Agricultural and Forest Meteorology  

    © 2020 Elsevier B.V. Although stemflow (SF) had been regarded as a small portion of the gross rainfall (GR), recent studies have revealed that, depending on the forest stand structure, the SF/GR ratio should not be neglected. This study derived SF/GR estimation models using common forest inventory data. A set of SF/GR ratio and forest inventory data (stand density (SD), total basal area (BA), mean diameter at breast height (DBH¯), mean tree height (H¯), canopy cover (CC), and leaf area index (LAI)) was collected from previous studies of Japanese cedar and cypress plantations. To further investigate the relation between SF/GR ratio and forest stand structures, we examined additional stand-structure variables (mean basal area (BA¯), mean stem surface area (SA¯), and total stem surface area (SA)) derived from the inventory data, and the stand-scale funneling ratio (FRstand) evaluating the efficiency of funneling rainwater. Among all the stand-structure variables, SD exclusively determined the SF/GR ratio, providing the best-fitting positive single linear regression equation as a density-based SF/GR model with a root mean square error (RMSE) of 2.4%. Although this model is useful for practical forest water management because it requires only SD which is the most basic forest inventory data, it has a weak point in meticulous forest water management because it cannot reflect the effect of tree growth on SF/GR ratio. Thus, we developed a size-based SF/GR model (RMSE = 2.0%) based on the strong relationship between the FRstand and DBH¯. This model is applicable to meticulous forest water management because it reflects the effects of not only SD but also tree growth by DBH on SF/GR ratio. These models derived from the common forest inventory data are potentially applicable to the evaluation and control of SF in forest water management.

    DOI: 10.1016/j.agrformet.2020.107997

    Scopus

  • Application of the GCOM-C global ET<inf>index</inf> estimation algorithm in 40 forests located throughout Japan, North America, Australia, and the tropical region 査読あり

    Umeno H., Shinohara Y., Tasumi M.

    Journal of Agricultural Meteorology   75 ( 4 )   193 - 202   2019年10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 Agricultural Meteorology  

    © 2019, Society of Agricultural Meteorology of Japan. All rights reserved. Evapotranspiration estimates in forested areas are important not only for water resource management on a regional scale but also to better understand the water cycle on a global scale. The objective of this study was to evaluate the Global Change Observation Mission-Climate (GCOM-C) global Evapotranspiration-index (ETindex) estimation algorithm (GCOM-C ETindex algorithm) applied to forested areas. ETindex, which is the ratio of the actual evapotranspiration to the reference evapotranspiration, is estimated from the actual surface temperature and hypothetical wet and dry surface temperatures, i.e., Ts (wet) and Ts (dry), respectively. Based on the algorithm, evapotranspiration is calculated from thermal satellite images and near-surface weather data. We compared the observed ground-based annual evapotranspiration with the estimated annual evapotranspiration obtained using the GCOM-C ETindex algorithm and thermal images from the Moderate Resolution Imaging Sectroradiometer (MODIS) satellite for 40 forests, with 10 sites in four different areas, including Japan, North America, Australia, and the tropical region. We found that the GCOM-C ETindex algorithm well reproduced annual evapotranspiration for most forests. The root mean square errors (RMSE) for the 40 forests was 239 mm. In Japan, North America, and Australia, the overestimation of summer evapotranspiration was offset by the underestimation of winter evapotranspiration. The accuracy of annual evapotranspiration estimates in forests with low annual mean temperatures (<15 °C) was less than that in forests with high annual mean temperatures (≥15 °C). Forests with a low annual mean temperature displayed low levels of evapotranspiration in winter. In these forests, the overestimation of summer evapotranspiration was not offset by the underestimation of winter evapotranspiration. The overestimation of Ts (wet) is the primary reason for the overestimation of summer evapotranspiration. Redetermination of the parameters for the Ts (wet) estimates must improve the evapotranspiration estimates in the forested areas, especially the ones with a low annual mean temperature.

    DOI: 10.2480/agrmet.D-18-00052

    Scopus

    CiNii Article

  • Effects of thinning on canopy transpiration of a dense Moso bamboo stand in Western Japan 査読あり

    Ichihashi R., Komatsu H., Kume T., Shinohara Y., Tsuruta K., Otsuki K.

    Journal of Forest Research   24 ( 5 )   285 - 291   2019年9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 Forest Research  

    © 2019, © 2019 The Japanese Forest Society. Bamboos tend to become abundant associated with human activities and possibly affect ecosystem dynamics including vegetation water cycles. We examined the effects of thinning on canopy transpiration (Ec) for a dense, unmanaged (i.e. unthinned) Moso bamboo stand based on sap flow measurements. We unselectively thinned 45% of the culms during summer in a study plot (i.e. the first thinning). During the next spring, many new culms were generated in the plot and a comparable number of culms were thinned (i.e. the second thinning). After the first thinning, mean stand sap flux (Js) increased immediately by approximately 60% at a given potential evaporation (Ep); therefore, the Ec of the thinned stand reached 90% that of the pre-thinning condition. During the next year, after the second thinning, the Js of the current year culms was generally more than twice that of the pre-thinning stand at a given Ep, whereas the Js of the older culms decreased again to the level of the pre-thinning condition. The overall Ec was 78% that of the pre-thinning condition. Our results suggest that moderate thinning of dense Moso bamboo stands may not have major effects on Ec; thus, intensive thinning is required when the aim is to control water loss from bamboo stands. The relative insensitivity of water use in bamboo stands after thinning resulted from dynamic changes in water use in the individual culms. These processes might be related to the clonal nature of bamboo where culms are structurally and physiologically interconnected.

    DOI: 10.1080/13416979.2019.1647592

    Scopus

  • Throughfall partitioning by trees 査読あり

    Levia D., Nanko K., Amasaki H., Giambelluca T., Hotta N., Iida S., Mudd R., Nullet M., Sakai N., Shinohara Y., Sun X., Suzuki M., Tanaka N., Tantasirin C., Yamada K.

    Hydrological Processes   33 ( 12 )   1698 - 1708   2019年6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:Hydrological Processes  

    © 2019 The Authors Hydrological Processes Published by John Wiley & Sons Ltd Although we know that rainfall interception (the rain caught, stored, and evaporated from aboveground vegetative surfaces and ground litter) is affected by rain and throughfall drop size, what was unknown until now is the relative proportion of each throughfall type (free throughfall, splash throughfall, canopy drip) beneath coniferous and broadleaved trees. Based on a multinational data set of >120 million throughfall drops, we found that the type, number, and volume of throughfall drops are different between coniferous and broadleaved tree species, leaf states, and timing within rain events. Compared with leafed broadleaved trees, conifers had a lower percentage of canopy drip (51% vs. 69% with respect to total throughfall volume) and slightly smaller diameter splash throughfall and canopy drip. Canopy drip from leafless broadleaved trees consisted of fewer and smaller diameter drops (D50_DR, 50th cumulative drop volume percentile for canopy drip, of 2.24 mm) than leafed broadleaved trees (D50_DR of 4.32 mm). Canopy drip was much larger in diameter under woody drip points (D50_DR of 5.92 mm) than leafed broadleaved trees. Based on throughfall volume, the percentage of canopy drip was significantly different between conifers, leafed broadleaved trees, leafless broadleaved trees, and woody surface drip points (p ranged from <0.001 to 0.005). These findings are partly attributable to differences in canopy structure and plant surface characteristics between plant functional types and canopy state (leaf, leafless), among other factors. Hence, our results demonstrating the importance of drop-size-dependent partitioning between coniferous and broadleaved tree species could be useful to those requiring more detailed information on throughfall fluxes to the forest floor.

    DOI: 10.1002/hyp.13432

    Scopus

  • Application of GCOM-C SGLI for agricultural water management via field evapotranspiration 査読あり

    Tasumi M., Moriyama M., Shinohara Y.

    Paddy and Water Environment   17 ( 2 )   75 - 82   2019年4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:Paddy and Water Environment  

    © 2019, The International Society of Paddy and Water Environment Engineering. Evapotranspiration is a key parameter in agricultural water planning and management strategies because it determines the crop and irrigation water requirements. With the recent advance in satellite-based field observations and meteorological modeling, several techniques have been developed and applied to estimate actual evapotranspiration. This paper presents the first results of the application to field evapotranspiration monitoring of land surface temperatures observed by Japan’s new Global Change Observation Mission-Climate (GCOM-C) satellite. Through a test application conducted in an irrigation region in the western USA, specifications of the GCOM-C surface temperature observation and the derived field evapotranspiration were evaluated. The specifications of the surface temperature observation were that the satellite observed the study fields with a spatial resolution of about 300 m at a frequency of 4–5 days per week. Clouds further degraded observation frequency. However, at least one constant successful observation of land surface temperature was available each week during the study period from June 17 to July 21, 2018. With the unique spatial and temporal resolution of GCOM-C, the surface temperature data allowed weekly monitoring of individual field evapotranspiration for large-size fields. Estimation results of field evapotranspiration by the GCOM-C ET index estimation algorithm were evaluated for fields of wheat, pea, alfalfa, bean, and corn/potato/beet, as well as for rangeland. The result reasonably explained the relative differences of evapotranspiration among the different crop types and among individual fields having the same crop type. Quantitatively, some indications of underestimation of evapotranspiration were found during the application.

    DOI: 10.1007/s10333-019-00699-1

    Scopus

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書籍等出版物 【 表示 / 非表示

  • 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

MISC 【 表示 / 非表示

  • 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  

    <p>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.</p>

    DOI: 10.13101/ijece.13.93

    CiNii Article

  • 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  

    &emsp;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

    CiNii Article

  • モウソウチク林の拡大が林地の公益的機能に与える影響:―総合的理解に向けて―

    篠原 慶規, 久米 朋宣, 市橋 隆自, 小松 光, 大槻 恭一

    日本森林学会誌   96 ( 6 )   351 - 361   2014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(大学・研究所紀要)   出版者・発行元:日本森林学会  

    本研究では,既往の研究を整理することで,モウソウチク林拡大の実態,現存量を把握すると共に,モウソウチク林の拡大が,林地の水土保全に関する公益的機能を低下させる可能性について検証した。モウソウチク林の面積拡大は数多くの研究により報告されており,年間拡大率の平均は 1.03 ha/(ha year)であった。また,隣接する場所が開けている方が,開けていない場所と比較し,モウソウチク林の拡大速度が大きいことが示唆された。モウソウチク林の地上部現存量は,62.6~224.3 t/ha であり,その最大値はスギ林・ヒノキ林の最大値よりも小さいと予想された。一方,地下部現存量は研究例が少なく,今後のさらなる研究が必要である。林地の水土保全に関する公益的機能について既往の研究成果を取りまとめたところ,これまでの推察に反して,モウソウチク林は,他の森林タイプと比較し,洪水,渇水,表層崩壊,表面侵食のリスクが低いことが示唆された。しかし,この結論は十分な計測例に基づくものではない。今後,様々な林分条件,気象条件のモウソウチク林で数多くの計測が行われ,上記の結論を再検討することが望まれる。

    DOI: 10.4005/jjfs.96.351

    CiNii Article

  • 第3回 森林水文学を考える若手研究者の会開催報告

    五名 美江, 篠原 慶規, 小田 智基, 山川 陽祐, 正岡 直也, 若原 妙子, 長谷川 規隆, 鶴田 健二, 平岡 真合乃, 飯田 真一

    水文・水資源学会誌   26 ( 3 )   174 - 178   2013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(大学・研究所紀要)   出版者・発行元:水文・水資源学会  

    CiNii Article

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  • 森林施業が衛星画像のNDVIに与える影響-蒸発散評価に向けて-

    深江朋美,篠原慶規

    日本森林学会大会 

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    開催年月日: 2021年3月

    記述言語:日本語   会議種別:口頭発表(一般)  

  • 海岸林における付着塩分量の時間変動及びそのモデル化

    宮﨑拓馬,篠原充輝, 篠原慶規,南光一樹,岩﨑健太,新田響平,水永博己

    日本森林学会大会 

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    開催年月日: 2021年3月

    記述言語:日本語   会議種別:口頭発表(一般)  

  • 港湾建設に伴う海岸線変化が生じさせた海岸林樹高成長の空間的不均質性

    岩﨑健太,南光一樹,中田康隆,真坂一彦,篠原慶規,新田響平,水永博己

    日本森林学会大会 

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    開催年月日: 2021年3月

    記述言語:日本語   会議種別:口頭発表(一般)  

  • 風由来の環境ストレスを踏まえた20年生海岸クロマツの樹高成長履歴

    南光一樹,新田響平,篠原慶規,岩﨑健太,水永博己

    日本森林学会大会 

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    開催年月日: 2021年3月

    記述言語:日本語   会議種別:口頭発表(一般)  

  • 水無川流域における土砂流出量の予測に向けて

    篠原慶規, 堀田紀文, ゴメス・クリストファー, 經隆悠

    砂防学会研究発表会 

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    開催年月日: 2020年5月

    記述言語:日本語   会議種別:ポスター発表  

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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)獲得実績 【 表示 / 非表示

  • 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

    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?

    2013年04月 - 2016年03月

    科学研究費補助金  若手研究(B)

  • 地球温暖化が森林蒸発散量,二酸化炭素固定量に与える影響の予測

    2008年04月 - 2011年03月

    科学研究費補助金  特別研究員奨励費

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