Search Results 1-20 of 26

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  • Riparian forest invasion by <i>Robinia pseudoacacia</i> and its effects on riverside vegetation  [in Japanese]

    GOTO Satoshi , SHIMANO Koji

    <p> 信濃川水系,梓川,信濃川におけるニセアカシア(ハリエンジュ,<i>Robinia pseudoacacia</i>)の侵入が河畔植生に与える影響について調べた.種組成を見ると,ニセアカシア高木林は他の群落で見られない山地のアカマツ林に生育する木本などが見られ,クラスター分析では他の河畔植生とは異なる一つのグループを形成した.群落をNMDSで序列化しラウン …

    Vegetation Science 35(2), 49-65, 2018

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  • Hydro-biogeochemical Processes of a Riparian Wetland and Their Effects on Surface Water Quality in a Forested Catchment  [in Japanese]

    KATSUYAMA Masanori , ITOH Masayuki , OHTE Nobuhito , TANI Makoto

    <p> 花崗岩からなる森林流域において,約100年前に設置された土砂止め堰堤上流部に発達した渓畔湿地の水文生物地球化学的過程を明らかにすることを目的に観測を行った.観測プロットの上流側では全層で砂質土壌が堆積しているのに対し,土砂止め堰堤に近い下流側では表層には泥質土壌が,下層には砂質土壌が堆積していた.土砂堆積様式に起因して不均質な水移動経路が形成され,透水性の高い砂質土壌 …

    JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES 31(3), 178-189, 2018

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  • Environmental Isotope-based Estimation of Groundwater Discharge Area and Classification of Hydrochemical Aspects of Distributed Ponds in the Kushiro Wetland  [in Japanese]

    Tsuchihara Takeo , Yoshimoto Shuhei , Ishida Satoshi , Ii Hiroyuki

    … <p>  The Kushiro Wetland, which is designated for inclusion in the Ramsar List of Wetlands of International Importance, is located in the northeastern part of Hokkaido Prefecture, Japan. … This study is associated with the environmental isotope-based investigations of hydrochemical aspects of distributed riparian ponds close to the Chiruwatsunai River, which is one of major natural rivers in the Kushiro Wetland. …

    Journal of Rainwater Catchment Systems 22(1), 41-50, 2016

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  • Result of extermination activities of invasive alien species, cutleaf coneflower <i>Rudbeckia iaciniata</i> around Lake Izunuma-Uchinuma in Miyagi Prefecture  [in Japanese]

    Hoshi Masatoshi , Fujimoto Yasufumi , Shimada Tetsuo , Mori Akira , Ashizawa Jun

    <p>伊豆沼・内沼の湖岸で確認された特定外来生物に指定されているオオハンゴンソウ <i>Rudbeckia iaciniata</i> の2つの群落に対する駆除活動を実施した.本研究では,オオハンゴンソウの駆除活動で使われる刈払いと抜取りの2つの駆除手法に着目し,両者の特長を組み合わせた駆除活動を2013年から2015年にかけて実施した.その結果,2013年の駆 …

    Izunuma-Uchinuma Wetland Researches 10(0), 67-76, 2016

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  • SPECIAL ISSUE “ Nonnative Species and Vegetation Management ” Distribution of Asian invasive woody species, Chinese tallow, in North America  [in Japanese]

    IWANAGA Fumiko , SAKIO Hitoshi , YAMAMOTO Fukuju

    ナンキンハゼ (<I>Triadica sebifera</I> (L.) Small) は中国中南部原産の落葉高木で,アメリカ東南部の湿地林・低地林で分布域拡大が著しい。本種の導入は 1900年代初期に始まり,蝋や脂質の生産や用材としての利用を目的として行われた。アメリカ東南部低地域は 18世紀後半からの人為的な環境改変や経済活動の影響を受けて,森林面積の減少や劣化が顕著 …

    Journal of the Japanese Society of Revegetation Technology 40(3), 479-484, 2015

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  • Outline of the "Lake Basin Governance Research Promotion Activities"

    中村 正久

    … Standing bodies of water, such as lakes, reservoire, wetland, ponds, estuaries, inland seas and even temporary impoundments, constitutes a majer portion of the surface water on earth. …

    Science for environment & sustainable society 8(1), 1-11, 2011-10

    IR 

  • Influence of CO_2 partial pressure and other factors on spatial and temporal variation of pH in two streams draining the watersheds having different size of riparian zone

    NAKAGAWA Yasunori , SHIBATA Hideaki , SATOH Fuyuki , SASA Kaichiro

    著者らは,北海道の2つの集水域について,渓流水のpHの時空間変動と,その変動を引き起こす要因について評価した。1つの集水域は,渓流の流路沿いに湿地が広がり,もう1つは狭い渓畔域を持つ。著者らは,渓畔湿地が渓流水のpHに及ぼす影響についても評価した。本研究では,渓流水のpHはほぼ中性で,主に二酸化炭素分圧(以下,pCO<SUB>2</SUB>)によりコントロールされていた。つ …

    ENVIRONMENTAL SCIENCE 22(3), 173-186, 2009-05-29

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  • Analysis of methane production pathways in a riparian wetland of a temperate forest catchment, using δ_13 C of pore water CH_4 and CO_2

    Itoh Masayuki , Ohte Nobuhito , Koba Keisuke , Sugimoto Atsuko , Tani Makoto

    … To clarify how hydrological processes affect biogenic methane (CH_4) production and emission from soil surfaces, we analyzed the δ_13C of CH_4 and CO_2 and chemical constituents dissolved in groundwater at a wetland in the headwater catchment of a temperate forest in Japan. …

    Journal of Geophysical Research 113(G3), 2008-07-12

    IR 

  • Individuality and Distribution Pattern of Riparian Wetlands Controlling Longitudinal Change in Dissolved Organic Carbon Concentration in a Forested Stream  [in Japanese]

    HAGA Hirokazu , NISHIDA Kei

    … Here, we discuss the effects of individuality and the distribution pattern of riparian wetlands on longitudinal changes in dissolved organic carbon (DOC) concentration in a headwater stream using model simulations. … This model calculation showed that the roles of riparian wetlands as DOC sources varied greatly among riparian wetlands, even though such wetlands were predominant sources of stream DOC. …

    Journal of Japan Society on Water Environment 30(9), 521-526, 2007-09-10

    J-STAGE  References (25) Cited by (3)

  • Nature restoration plan for the lower reaches of the Ishikari River  [in Japanese]

    竹内 亀代司 , 丸岡 昇 , 大門 智

    Report of Riverfront Research Institute (18), 33-40, 2007-09

  • Contributions of Surface Soil Waters to Changes in Nitrate and Dissolved Organic Carbon Concentration in Riparian Wetland Streams  [in Japanese]

    HAGA Hirokazu , NISHIDA Kei , FUJITA Masafumi , SAKAMOTO Yasushi

    Riparian wetlands, which form the transition zone between hillslopes and streams, are important landscape units controlling water chemistry in catchments. … Concerning the forest-related nonpoint source pollution in Japan, however, there have been few studies in which the roles of riparian wetlands in catchment water chemistry were clarified. …

    Journal of Japan Society on Water Environment 30(4), 213-218, 2007-04-10

    J-STAGE  References (27) Cited by (4)

  • Hydrologic effects on methane dynamics in riparian wetlands in a temperate forest catchment

    Itoh Masayuki , Ohte Nobuhito , Koba Keisuke , Katsuyama Masanori , Hayamizu Kana , Tani Makoto

    … To understand how hydrological processes affect biogeochemical and methane (CH_4) cycles in temperate riparian wetlands, we measured CH_4 fluxes and dissolved chemical constituents and CH_4 concentrations in groundwater, and monitored several environmental factors in wetlands located within a forested headwater catchment in a warm, humid climate in Japan. … CH_4 emissions from riparian wetlands were observed almost throughout the year and displayed clear seasonality. …

    Journal of Geophysical Research 112(G1), 2007-02-27

    IR 

  • Hydrochemical Aspects of Distributed Spring Waters in Chiruwatsunai River Watershed of Kushiro Wetland  [in Japanese]

    TSUCHIHARA Takeo , NAKAYA Tetsuo , ISHIDA Satoshi , IMAIZUMI Masayuki , KAWACHI Toshihiko

    釧路湿原を流れる自然河川であるチルワツナイ川において, 地下水, 特に湧水の水文・化学特性を明らかにするために調査を行った. 釧路湿原の水文環境に影響を与える地下水は湿原と台地部の境界付近からの湧水だけではなく, 湿原内にも地下水が2種類の湧水形態 (噴火口型・噴砂丘型) で湧出していることが明らかとなった, 噴火口型湧水と噴砂丘型湧水は同じチルワツナイ川において異なる支流河川に分布しており, ま …

    Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering 73(6), 575-586, 2005-12-25

    J-STAGE  References (20) Cited by (1)

  • Nutrient supplies from forest ecosystem to downstream ecosystem:The role and function of riparian wetland

    Nakagawa Yasunori

    The Japanese Forest Society Congress 116(0), 67-67, 2005

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  • Species composition and environments of riparian forests consisting of Lagerstroemia subcostata var. fauriei, an endangered species on Yakushima Island  [in Japanese]

    ITO Satoshi , NOGAMI Kangoro

      1.準絶滅危惧種ヤクシマサルスベリの分布域である屋久島低地の渓畔域において,渓畔林35林分の植生および立地環境を調査し,斜面の46林分と比較した.<BR>  2.クラスター分析によって植物種の出現傾向の類似性を解析した結果,上部照葉樹林型,下部照葉樹林型,尾根植生型,および先駆木本・湿性型などのギルドが検出され,ヤクシマサルスベリは先駆木本・ …

    Vegetation Science 22(1), 15-23, 2005

    J-STAGE  References (21) Cited by (2)

  • Denitrification and organic carbon availability in riparian wetland soils and subsurface sediments

    HILL A. R.

    Soil Sci. Soc. Am. J. 68, 320-325, 2004

    Cited by (3)

  • CHANGE OF FLUVIAL SYSTEM CAUSED BY THE CHANNEL WIDENING IN THE KITA RIVER

    HATTORI Atsushi , SEZAKI Tomoyuki , FUKUSHIMA Masaki , ITOU Masahiko , SUETSUGI Tadashi

    … It is inferred from these results that there would occur the extension of wetland covered with willow and phragmites community and the reduction of bare bars in the future after the widening of low channel in the Kita River. …

    PROCEEDINGS OF HYDRAULIC ENGINEERING (48), 991-996, 2004

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  • Restoration strategies for rivers, floodplains and wetlands in Kushiro Mire and Shibetsu River, northern Japan  [in Japanese]

    NAKAMURA Futoshi

    河川・湿地生態系は,森林(植物群集)と河川の相互作用系,上流から下流に向けての土砂・有機物・栄養塩・熱エネルギーの流れ,洪水(土石流)攪乱や氾濫原によって特徴付けられる独特な生態系であり,自然復元にあたってはこれらの特徴を回復・維持することに主眼がおかれなければならない.現在,日本の河川・湿地生態系では,こうしたプロセスの分断と水域・陸域の生態系の分離が顕著である.<BR>復元(res …

    Ecology and Civil Engineering 5(2), 217-232, 2003-02-28

    J-STAGE  References (55) Cited by (16)

  • A STUDY ON THE NUMERICAL CALCULATION, REPLICATING THE MODEL EXPERIMENT OF THE ISHIKARI RIVER

    ITO Yuichiro , SHIMIZU Yasuyuki

    … It is important to estimate quantitatively suspended load, because the suspended load bring about a lot of problems, that is, sedimentation in reservoir, the drying wetland due to sedimentation of suspended load, and aggradation of the river mouth in river engineering, and affect riparian vegetation distribution and aquatic habitat in environmental engineering. …

    PROCEEDINGS OF HYDRAULIC ENGINEERING (47), 661-666, 2003

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  • Influences of dam structure on dynamics of riparian forests  [in Japanese]

    NAKAMURA Futoshi

    ダム構造物が水辺林の更新動態に与える影響について,流量変動,流砂量および地形変化,撹乱の頻度と強度,そして流水による種子散布の観点から検討した.<BR>ダムによる融雪洪水の消失は,5月から6月にかけての砂礫堆の形成と水分の供給を制限し,ポプラに代表されるヤナギ科植物が発芽定着できる更新立地を縮小させる.また,夏季の水位低下は乾燥による稚樹の枯死をもたらすと報告されている.<BR& …

    Ecology and Civil Engineering 2(2), 125-139, 1999-11-19

    J-STAGE  References (83) Cited by (14)

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