Research on the solute runoff mechanism from basin and the marine ecosystem at the flood event using the hydrology and seawater flow model

利用水文学和海水流模型研究洪水事件时流域和海洋生态系统溶质径流机制

• 批准号: 18360238
• 负责人: HASHINO Michio
• 金额: $ 10.33万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360238/
• 关键词: Hydraulics; Flood; Runoff; Solute; Basin; Silicate; Marine Ecosystem; 硝酸イオン

The influence that geological features and the difference of the land use gave to the solute runoff mechanism from the basin to the sea area was examined. To achieve the purpose, the field observation and the mathematical model simulation were executed. The water quality and hydrological observation were done in the Umayado river basin(covered in sandstone-mudstone, and forest)and the Kabe river basin(covered in granite, and coexistence ground in forest, urban area, and farmland)at the rain event of Typhoon No. 4 in 2007. The total precipitation was 200mm in both of the two basins.The finding is described as follows.1) In the point of the runoff rate and the solute runoff rate, the Umayado river basin (geological features: sandstone-mudstone)is higher than the Kabe river basin (geological features: granite).2) In the relation between the geological features and the amount of the solute supply from the basin, the Kabe river basin is bigger than the Umavado river basin, for instance the amount of the supply of the silica increases by a factor of 1.63) When the land use upgraded, the runoff loading of silica becomes small The runoff loading of Kabe river basin was 46% fewer than that of the Umayado river basin.Because a large-scale flood event that influenced the seawater quality did not occur, the observation and analyze of the sea areas that were adjacent to the basins were not able to be done. However, it is thought that it was a very important result to be able concretely to examine the difference of the solute runoff mechanism of two basins which have the different geological features and land use, using the mathematical model in the condition like the same rainfall wave form and precipitation.

考察了地质特征和土地利用差异对流域至海域溶质径流机制的影响。为达到此目的，进行了现场观测和数学模型模拟。在2007年4号台风降雨期间，在Umayado河流域（砂岩-泥岩覆盖，森林覆盖）和Kabe河流域（花岗岩覆盖，森林、城市和农田共存）进行了水质和水文观测。结果表明：（1）从径流量和溶质径流量来看，倭马亚多河流域的径流量和溶质径流量均为200 mm，而倭马亚多河流域的径流量和溶质径流量均为200 mm，其中，倭马亚多河流域的径流量和溶质径流量均为200 mm。（地质特征：砂岩-泥岩）高于卡贝河流域（地质特征：2）在地质特征与盆地溶质供应量的关系上，Kabe河流域大于Umavado河流域，例如，二氧化硅的供应量增加了1.63倍）土地利用升级时，二氧化硅的径流负荷变小。Kabe河流域的径流负荷比Umayado河流域少46%。由于没有发生影响海水水质的大规模洪水事件，对盆地周边海域的观测和分析工作也未能完成。然而，在相同的降雨波形和降水量条件下，利用数学模型能够具体考察两个具有不同地质特征和土地利用方式的流域溶质径流机制的差异，是一个非常重要的成果。

项目成果

物質流出タンクモデルを用いた流域条件の異なる3つの森林流域における物質流出機構の比較検討

利用物质径流池模型比较不同流域条件的三个森林流域物质径流机制

• 发表时间: 2007
• 作者: Miwa;T.;Yamamoto;T.;Takeshita;T.;Morikawa;T;Yoshihiro Suenaga;田村隆雄;Yoshihiro Suenaga;Takao Tamura;田村 隆雄;田村隆雄;田村隆雄
• 通讯作者: 田村隆雄

STUDY ON THE INFLUENCE OF THE RIVER INFLOW INTO THE OCEAN

河流入海影响研究

• 发表时间: 2007
• 期刊: Proceedings of Pacific Congress on Marine Science and Technology 2007
• 作者: Miwa;T.;Yamamoto;T.;Takeshita;T.;Morikawa;T;Yoshihiro Suenaga;田村隆雄;Yoshihiro Suenaga
• 通讯作者: Yoshihiro Suenaga

Solute runoff property of three mountain forested basin where geological features condition is different

地质条件不同的三个山地森林盆地溶质径流特性

• 发表时间: 2007
• 期刊: JOURNAL OF GROUND WATER TECHNOLOGY Vol. 47, No. 7
• 作者: Miwa;T.;Yamamoto;T.;Takeshita;T.;Morikawa;T;Yoshihiro Suenaga;田村隆雄;Yoshihiro Suenaga;Takao Tamura
• 通讯作者: Takao Tamura

引田湾に隣接する森林流域からの物質流出機構と流出負荷量

引田湾附近森林盆地的物质径流机制和径流负荷

• 发表时间: 2007
• 期刊: 土木学会水工学論文集 51
• 作者: Miwa;T.;Yamamoto;T.;Takeshita;T.;Morikawa;T;Yoshihiro Suenaga;田村隆雄;Yoshihiro Suenaga;Takao Tamura;田村 隆雄;田村隆雄
• 通讯作者: 田村隆雄

地質条件の異なる3つの山地森林流域の物質流出特性に関する調査研究

不同地质条件的三个山地森林盆地物质径流特征研究

• 发表时间: 2007
• 期刊: 地下水技術 49(4)
• 作者: Miwa;T.;Yamamoto;T.;Takeshita;T.;Morikawa;T;Yoshihiro Suenaga;田村隆雄
• 通讯作者: 田村隆雄