Study on Change in River Landscape in Alluvial Fun Rivers and Its Restoration

冲积乐趣河河流景观变化及其恢复研究

• 批准号: 11650523
• 负责人: TSUJIMOTO Tetsuro
• 金额: $ 2.18万
• 依托单位: NAGOYA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650523/
• 关键词: Alluvial fun river; Degradation of riverbed; Forestation in rivers; River Landscape; Evaluation method of habitat; River restoration; 河床低下; 河相変質; 伏流

The aim of the project is to establish the method to predict and evaluate the change in river landscape in alluvial fun rivers where both sediment supply and peak discharge of floods have been decreased due to dam constructions. First, several individual topics observed in the rivers have been investigated using field data, flume experiments and numerical simulations. Second, the synthesized processes including the response of trees in a river to the change of the geomorphology have been discussed in order to seek proper restoration method of the rivers. The results have been summarized as below :1. Comparison between two rivers -The Tedori River and The Abe RiverThe changes in geomorphology and vegetated area in the Tedori River and those in the Abe River have been compared using survey data and aerial photographs. The two rivers have almost same drainage area and bed-slope in an alluvial reach. The Tedori River has a large dam, but the Abe River does not. The results show that the de … More crease of the peak discharge in floods causes the thriving of vegetation in a channel.2. Processes of geomorphology and growth of vegetated areaThe following processes are investigated in detail.(1) Sediment transport process in a channel with vegetated area(2) Patterns of growing vegetation area concerned to ground water level and deposited bed-material(3) Flood damage and/or advantage on vegetationThese investigations have emphasized the importance of the interaction among vegetation, geomorphology and water regime.3. Modeling of vegetation dynamics due to decrease of peak discharge in floodsThe effect of the decrease of peak discharge in floods on the growth of vegetation has been modeled in order to evaluate the changing landscape due to dam constructions. The model has successfully predicted the thriving of vegetation in the Terori River, and it would be one of powerful tools to discuss the change in river landscape.4. Evaluation method of changing habitatThe IFIM/PHABSIM method has been modified by adding the idea for synthesis of several different life-stages of a fish species. The method has also been cooperated with sediment transport model in order to discuss the effects of the change in geomorphology and vegetation pattern on the habitat.5. Toward restorationThe environmentally sound and cost-effective methods for the restoration of the rivers have been discussed base on the results shown in the above. Less

该项目的目的是建立一种方法来预测和评估冲积乐趣河流中河流景观的变化，这些河流由于大坝建设而减少了泥沙供应和洪峰流量。首先，利用现场数据、水槽实验和数值模拟对在河流中观察到的几个单独主题进行了研究。其次，讨论了河流中树木对地貌变化的响应等综合过程，以寻求适当的河流恢复方法。研究结果概括如下： 1．手取川和安倍川两条河流的比较利用调查数据和航空照片，对手取川和安倍川的地貌和植被面积的变化进行了比较。两条河流的流域面积和冲积河段河床坡度几乎相同。手取川有大坝，但安倍川没有。研究结果表明，洪水洪峰流量下降导致河道植被繁茂。2．地貌和植被生长过程详细研究了以下过程：（1）有植被区域的河道中的泥沙输送过程（2）与地下水位和沉积床质有关的植被生长模式（3）洪水对植被的损害和/或优势这些研究强调了植被、地貌和水情之间相互作用的重要性。3．洪水峰值流量减少引起的植被动态建模为了评估大坝建设造成的景观变化，我们对洪水峰值流量减少对植被生长的影响进行了建模。该模型成功预测了特罗里河植被的繁盛情况，将成为讨论河流景观变化的有力工具之一。 4．改变栖息地的评估方法IFIM/PHABSIM方法已经过修改，添加了综合鱼类物种的几个不同生命阶段的想法。该方法还与泥沙输送模型相结合，探讨地貌和植被格局变化对生境的影响。5．走向恢复 根据上述结果，讨论了对环境无害且具有成本效益的河流恢复方法。较少的

项目成果

Tetsuro TSUJIMOTO, Yoko MURAKAMI and Tatsuya YASUI: "Growth of vegetation in fluvial-fan segment due to decrease of destruction of vegetation by floods"Annual Journal of Hydraulic Engineering. Vol.45 (in Japanese). 1105-1110 (2001)

Tetsuro TSUJIMOTO、Yoko MURAKAMI 和 Tatsuya YASUI：“由于洪水对植被破坏的减少，河扇段植被的生长”水利工程学年刊。

Dey,A.K.,T.Tsujimoto and T.Kitamura: "Growth and migration of headcut in heterogeneous soil stratum"水工学論文集,土木学会. 第45巻. 823-828 (2001)

Dey, A.K.、T.Tsujimoto 和 T.Kitamura：“异质土层中切头的生长和迁移”，《水利工程学报》，日本土木工程师学会，第 45 卷，823-828（2001 年）。

辻本哲郎,村上陽子,安井辰弥: "手取川における樹林化と大出水時の植生破壊"河川技術に関する論文集,土木学会. Vol.5. 99-104 (1999)

Tetsuro Tsujimoto、Yoko Murakami、Tatsuya Yasui：“手取川严重洪水期间的造林和植被破坏”河流技术论文集，日本土木工程师学会，第 5 卷 99-104 (1999)

Yoshihiko SHIMIZU, Shigeki KOBATAKE and Satoshi OKADA: "Study on the expansion of Robina Pseudo-Acacia in gravel-bed river caused by flood disterbance"Annual Journal of Hydraulic Engineering. Vol.45 (in Japanese). 1099-1104 (2001)

清水义彦、小畑茂树、冈田聪：“洪水扰动引起的砾石河床中刺槐假相思树扩张的研究”水利工程学报。

Fusetsu TAKAGI, Tetsuro TSUJIMOTO, Tetsuya SUMI and Akiko ISEKI: "Piping process to reach bank break and evaluation of effect of traditional flood fighting technology "Tsukinowa""Advances in River Engineering. Vol.5 (in Japanese). 123-128 (1999)

Fusetsu TAKAGI、Tetsuro TSUJIMOTO、Tetsuya SUMI 和 Akiko ISEKI：“到达堤岸的管道过程和传统防洪技术“Tsukinowa”的效果评估”河流工程的进展。