Study on the formation of mudflat and habitat of benthos due to mud transport in shallow water area

浅水区泥浆搬运形成的泥滩及底栖生物栖息地研究

• 批准号: 16360266
• 负责人: YAMANISHI Hiroyuki
• 金额: $ 9.47万
• 依托单位: Saga University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360266/
• 关键词: The Ariake Sea; Mud; Suspended Solids; Anoxic water; Erosion; Settling flux; Preference curve; Sinonovacula Constrica; シミュレーション; 干潟; 現地調査; 栄養塩; 数値計算

In this study, water quality in a tidal flat is measured using an automatic ascending-descending instrument that collects hydraulic data and water quality data at various depths over a long period. Analysis of the data, focusing on suspended solids, reveals the variations and distribution of suspended solids in different tidal periods. Information regarding the fluctuation in various physical characteristics of tidal flats was successfully extracted from the obtained measurements. Some of the characteristics of sediment transport over mud flats under the variations of water level were also clarified. This research also attempts to consider that the movement of SS and nutrients, and thus their characteristics and the influence of erosion to water quality are investigated. As a result, it can be said that T-N and T-P are much dependent on the behaviors of mud erosion. They contribute a great effect to the water quality, while DIN and DIP may not be affected clearly by the mud erosion in this limited survey. In addition, parts of nutrients leached in the water from eroded matters were adsorbed to suspended matters again.Behaviors of suspended matters on the mud flat were investigated by using the sediment-traps and observation towers. Results obtained from the analysis of the amounts of sedimentation and nutrients reveal the characteristics of settling matters in the mud flat. The settling flux observed in the sediment-tarps almost coincided with the net settling flux obtained from a theoretical calculation. The amount of sedimentation to the mud flat was also estimated based upon the settling flux measured in this study. It is shown that the fine cohesive sediment transport in the area was demonstrated through examining the observed data in three towers.The preference factors of Sinonovacula constrica were extracted by some experiments. As the results, habitat of Sinonovacula constrica was estimated on the base of composite suitability index.

在本研究中，使用自动升降仪测量潮滩的水质，该仪器收集了长时间不同深度的水力数据和水质数据。对数据进行分析，重点分析悬浮固体，揭示悬浮固体在不同潮汐期的变化和分布。从获得的测量数据中成功地提取了有关滩涂各种物理特征波动的信息。阐明了水位变化下泥滩输沙的一些特征。本研究还试图考虑SS和营养物的运动，从而研究它们的特性和侵蚀对水质的影响。因此，可以说T-N和T-P在很大程度上取决于泥浆侵蚀的行为。它们对水质的影响很大，而在这次有限的调查中，DIN和DIP可能没有受到泥浆侵蚀的明显影响。此外，从侵蚀物中浸出的部分营养物质被再次吸附到悬浮物中。采用捕沙器和观测塔对泥滩上悬浮物的特性进行了研究。沉积物和营养物量的分析结果揭示了泥滩沉积物的特征。观测到的沉降通量与理论计算得到的净沉降通量基本一致。根据本研究测量的沉降通量，估算了泥滩的沉降量。通过对三塔观测资料的分析，证实了该地区的细粘性输沙作用。通过实验提取了缢蛏的偏好因子。在综合适宜性指数的基础上，对缢蛏生境进行了评价。

项目成果

泥質干潟域における懸濁物質の沈降特性に関する研究

泥质滩涂悬浮物沉降特性研究

• 发表时间: 2006
• 期刊: 環境工学研究論文集 Vol.43
• 作者: 壁谷澤寿一;壁谷澤寿海;Fabio et al.;Zhang et al.;Fabio et al.;Fabio et al.;Umesaki et al.;Zhang et al.;李 政準 他;三木 達也 他;LEE et al.;Zhang et al.;Zhang et al.;Etoh et al.;Umesaki et al.;Zhang et al.;Lee et al.;Miki et al.;Lee et al.;Lee et al.;Zhang et al.;Etoh et al.;Fabio G.Umesaki et al.;Lee et al.;Shimaoka et al.;李 政準 他;本幡 昭文 他;山西博幸(ほか6名)
• 通讯作者: 山西博幸(ほか6名)

自動昇降型水質測定装置を用いた有明海湾奥部の干潟における懸濁物質輸送と水質変動に関する現地調査

利用自动升降水质测量装置现场调查有明海湾内滩悬浮物运移和水质变化

• 发表时间: 2005
• 期刊: 環境工学研究論文集 Vol.42
• 作者: 壁谷澤寿一;壁谷澤寿海;Fabio et al.;Zhang et al.;Fabio et al.;Fabio et al.;Umesaki et al.;Zhang et al.;李 政準 他;三木 達也 他;LEE et al.;Zhang et al.;Zhang et al.;Etoh et al.;Umesaki et al.;Zhang et al.;Lee et al.;Miki et al.;Lee et al.;Lee et al.;Zhang et al.;Etoh et al.;Fabio G.Umesaki et al.;Lee et al.;Shimaoka et al.;李 政準 他;本幡 昭文 他;山西博幸(ほか6名);LEE et al.;Yamanishi et al.;Lee et al.;山西博幸(ほか4名)
• 通讯作者: 山西博幸(ほか4名)

A Study on Characteristics of Settling Matters in the Mud Flat of the Ariake Sea

有明海泥滩沉降物特征研究

• 发表时间: 2006
• 期刊: Environmental Engineering Research Vol.43
• 作者: 壁谷澤寿一;壁谷澤寿海;Fabio et al.;Zhang et al.;Fabio et al.;Fabio et al.;Umesaki et al.;Zhang et al.;李 政準 他;三木 達也 他;LEE et al.;Zhang et al.;Zhang et al.;Etoh et al.;Umesaki et al.;Zhang et al.;Lee et al.;Miki et al.;Lee et al.;Lee et al.;Zhang et al.;Etoh et al.;Fabio G.Umesaki et al.;Lee et al.;Shimaoka et al.;李 政準 他;本幡 昭文 他;山西博幸(ほか6名);LEE et al.;Yamanishi et al.
• 通讯作者: Yamanishi et al.

Field surveys on suspended matters transport and variations of water quality on an intertidal mudflat in the gulf of Ariake Sea using an automatic profiler sensor

使用自动剖面传感器对有明湾潮间带泥滩悬浮物迁移和水质变化进行现场调查

• 发表时间: 2005
• 期刊: Environmental Engineering Research (in Japanese) Vol.42
• 作者: 壁谷澤寿一;壁谷澤寿海;Fabio et al.;Zhang et al.;Fabio et al.;Fabio et al.;Umesaki et al.;Zhang et al.;李 政準 他;三木 達也 他;LEE et al.;Zhang et al.;Zhang et al.;Etoh et al.;Umesaki et al.;Zhang et al.;Lee et al.;Miki et al.;Lee et al.;Lee et al.;Zhang et al.;Etoh et al.;Fabio G.Umesaki et al.;Lee et al.;Shimaoka et al.;李 政準 他;本幡 昭文 他;山西博幸(ほか6名);LEE et al.;Yamanishi et al.;Lee et al.;山西博幸(ほか4名);Shimaoka et al.;Yamanishi et al.
• 通讯作者: Yamanishi et al.