Query：
学者姓名：蒋北寒
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
Vegetation patches constitute the foundational elements of river dynamic systems, often forming communities within channels. This study examines how the interaction between neighboring vegetation patches influences flow structure. A pair of adjacent vegetation patches, constructed from staggered rigid cylinders with varying densities, is used in the experiments. The findings indicate significant differences in flow structure when water traverses these adjacent patches compared to an isolated patch. Hence, a flow structure partition for adjacent patches is proposed, including an upstream adjustment region, a vegetation interior region, a shear layers region, and a wake merger region. The upstream adjustment length indicates the distance upstream from the obstruction where velocity starts to deviate from its far upstream value. This reduction in velocity is pronounced in denser patches, although the upstream adjustment length remains unaffected by vegetation density. The velocity at the centerline of each patch significantly decreases, whereas the velocity between the patches increases rapidly, a characteristic of the vegetation interior region. The reduction in individual patch velocity is again observed in denser patches. In the downstream area, the shear layers region extends from the trailing edge of the patches to the point of minimal velocity behind each isolated patch. With increasing vegetation density, the smallest velocity approaches zero, while the length of the shear layers region, denoted as L1, initially decreases before stabilizing. The highest velocity on the centerline between the patches occurs near the trailing edge, with the lowest velocity observed at a distance (x/D=Lm) from the trailing edge. As vegetation density increases, the maximum velocity on the centerline between the patches rises, but the minimum velocity and Lm decrease. The difference (Lm–L1) defines the length of the wake merger region; here, the centerline velocity of each patch increases and aligns with the velocity on the centerline between the patches, causing the wakes directly behind each patch to merge into a single, larger entity. In addition, the formulas for the exit velocity, steady wake velocity, and minimum centerline velocity of the two patches are presented. © 2024 Sichuan University. All rights reserved.
Keyword ：
Flow structure Flow structure Flow velocity Flow velocity Mergers and acquisitions Mergers and acquisitions Merging Merging Rivers Rivers Shear flow Shear flow Vegetation Vegetation Wakes Wakes
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jiang, Beihan , Yang, Yang , Cai, Feng et al. Influence of Neighboring Vegetation Patches on Flow Structure Characteristics with Different Densities [J]. | Advanced Engineering Sciences , 2024 , 56 (3) : 189-196 . |
| MLA | Jiang, Beihan et al. "Influence of Neighboring Vegetation Patches on Flow Structure Characteristics with Different Densities" . | Advanced Engineering Sciences 56 . 3 (2024) : 189-196 . |
| APA | Jiang, Beihan , Yang, Yang , Cai, Feng , Hu, Zhaoyang , Yue, Yichao . Influence of Neighboring Vegetation Patches on Flow Structure Characteristics with Different Densities . | Advanced Engineering Sciences , 2024 , 56 (3) , 189-196 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
植被群是河流动力系统的基本组成要素，通常成群存在于河道中，相邻植被群之间相互作用，对河道水流结构产生影响。本文采用均匀圆柱体木棍模拟刚性植株，交错排列组成疏密不同的圆形植被群，并排布置于水槽中，研究不同密度下相邻植被群的水流结构特性。试验结果表明：与单一植被群相比，水流流经并排植被群时，其结构呈现不一样的特点，据此提出相邻植被群的水流结构纵向发展分区：上游调整区、内部调整区、内外剪切层发展区、尾流融合区以及流速恢复区。流速自植被群上游某一断面开始减小，并一直持续至植被群前端，流速减幅随植被群密度增大而增大，此区域为上游调整区；植被群密度对上游调整区长度无显著影响。流经植被区时，单植中心线流速进一步减小，两植中心线流速迅速增加，此区域为内部调整区；该区域内植被群密度越大，单植中心线流速减幅越大。植被群下游，单植中心线流速自植被群末端沿程减小，直至产生流速最小值，此区域为内外剪切层发展区；单植中心线最小流速随植被群密度增大而减小并趋于0，内外剪切层发展长度L_1随植被群密度增大先减小后趋于稳定。两植中心线流速在植被群末端出现最大值，随后沿程减小，在距离植被群末端L_m处出现最小值，植被群密度越大，两植中心线最大流速越大，两植中心线最小流速及L_m越小。定义（L_m–L_1）为尾流融合区，此区域内单植中心线流速沿程增加，在L_m处与两植中心线流速相等，此时两个外剪切层相遇，左右植被群尾流在横向掺混的作用下，融合成一个大的尾流结构。本文还提出了出流流速、最小尾流流速及两植中心线最小流速的计算公式。
Keyword ：
尾流 尾流 植被密度 植被密度 水流结构发展 水流结构发展 流速 流速 相邻植被群 相邻植被群
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 蒋北寒 , 杨洋 , 蔡枫 et al. 不同密度下相邻植被群的水流结构发展特性 [J]. | 工程科学与技术 , 2024 , 56 (03) : 189-196 . |
| MLA | 蒋北寒 et al. "不同密度下相邻植被群的水流结构发展特性" . | 工程科学与技术 56 . 03 (2024) : 189-196 . |
| APA | 蒋北寒 , 杨洋 , 蔡枫 , 胡朝阳 , 岳逸超 . 不同密度下相邻植被群的水流结构发展特性 . | 工程科学与技术 , 2024 , 56 (03) , 189-196 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
This study aimed to effectively evaluate the ecological restoration of the river reach where a small hydropower station was retired or renovated. An ecological health index system was constructed based on the environmental characteristics of the upstream and downstream of the small hydropower station after its retirement and renovation. Based on the combination weighting concept of game theory, the combination weights were obtained by the comprehensive analytic hierarchy process (subjective weight) and entropy method (objective weight). This ecological health assessment with fuzzy comprehensive evaluation was applied to assess the health status of Shimen (dam removal) and Changqiao (renovation in ecological flow) reaches of the Tufang River in Changting County, China. The results showed that the ecological health assessment index system proposed in this study was comprehensive and reasonable, and the revision degree of the hydropower station obviously influenced the process of ecological river restoration. The findings from this study would benefit for the rational utilization of water resources and the river ecological health maintenance in mountainous areas.
Keyword ：
combined weight combined weight entropy method entropy method fuzzy evaluation fuzzy evaluation game theory game theory retirement and renovation retirement and renovation river health river health small hydropower stations small hydropower stations
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Cai, Feng , Hu, Zhinan , Jiang, Beihan et al. Ecological Health Assessment with the Combination Weight Method for the River Reach after the Retirement and Renovation of Small Hydropower Stations [J]. | WATER , 2023 , 15 (2) . |
| MLA | Cai, Feng et al. "Ecological Health Assessment with the Combination Weight Method for the River Reach after the Retirement and Renovation of Small Hydropower Stations" . | WATER 15 . 2 (2023) . |
| APA | Cai, Feng , Hu, Zhinan , Jiang, Beihan , Ruan, Weifang , Cai, Shujuan , Zou, Huiling . Ecological Health Assessment with the Combination Weight Method for the River Reach after the Retirement and Renovation of Small Hydropower Stations . | WATER , 2023 , 15 (2) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Understanding the evolution and driving factors of sedimentation and erosion at the mouths of small and medium-sized mountain streams during various periods is essential for regional spatial utilization, development, and sustainable economic growth. This is particularly important when considering the combined impact of climate change and human activities. This paper presents an analysis of the changes in sedimentation and erosion of mouth isobaths and underwater deltas over different periods using nautical chart data (1950-2019) and analyzes the factors driving changes in sedimentation and erosion during different periods from 1950 to 2020 based on the runoff-sediment discharge of the Minjiang River (MR) and extreme climate factors such as typhoons, especially the driving factors that caused a sudden change in the sedimentation and erosion process between 1998 and 2005. The results indicate that runoff-sediment characteristics are crucial in driving sedimentation and erosion changes. In the past 70 years, the underwater delta of the MRE has mainly experienced four stages: deposition (1950-1992) -erosion (1993-1998) -deposition (1998-2011) -erosion (2011-2019). Taking the impoundment operation of the Shuikou Reservoir in 1993 as the node, the sediment load of the Minjiang River into the sea began to decrease sharply, and then the estuary quickly showed a state of erosion. The change of sediment flux into the sea is the main driving factor for the evolution of erosion and deposition in the Minjiang River Estuary (MRE). The critical value of the erosion-deposition transition is about 570.3 x 104 t/yr. After the estuary entered a state of erosion in 1993-1998, significant siltation suddenly occurred in 1998-2005. The reason for the siltation in this period may be related to the frequent transit typhoons and flood events in 1998-2005. Therefore, the change of river sediment supply into the sea is the main driving factor controlling the erosion and deposition evolution of the Minjiang River estuary on a long time scale of more than 10 years, which reflects the influence of large-scale human activities on the river and estuary area in the past half century. Extreme climate events are the incentive to adjust the estuary landform in the short term. Extreme climate events will not fundamentally change the process of estuarine geomorphological evolution under the background of sediment supply reduction.
Keyword ：
driving factors driving factors extreme climate extreme climate human activities human activities Minjiang River estuary Minjiang River estuary sediment sediment
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lai, Xiaohe , Jia, Jianping , Hou, Yuebao et al. Analysis of the driving factors of the change of erosion-deposition in the Minjiang Estuary, Southeast China [J]. | FRONTIERS IN MARINE SCIENCE , 2023 , 10 . |
| MLA | Lai, Xiaohe et al. "Analysis of the driving factors of the change of erosion-deposition in the Minjiang Estuary, Southeast China" . | FRONTIERS IN MARINE SCIENCE 10 (2023) . |
| APA | Lai, Xiaohe , Jia, Jianping , Hou, Yuebao , Jiang, Beihan , Lin, Chuan , Lin, Xinlu et al. Analysis of the driving factors of the change of erosion-deposition in the Minjiang Estuary, Southeast China . | FRONTIERS IN MARINE SCIENCE , 2023 , 10 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
As a "marine ecological engineer", the oyster reefs not only perform important ecological functions, but also reduce the damage caused by waves to protective structures such as seawalls. However, oyster reefs in shallow water change the nonlinear characteristics of waves and affect sediment transport and coastal evolution. Based on Fourier spectrum and analysis of Wavelet Transform, the influence of artificial bag oyster reefs on the energy and nonlinear phase coupling of irregular waves are studied through physical experiment. The results show that oyster reefs have a substantial effect on the energy of primary harmonic, which transfer to higher harmonics through triad interactions, and a considerable reduction in primary harmonic energy and an increase in higher harmonics energy are reflected in the energy spectra. The transmission spectrum behind the oyster reefs shows three peaks at primary, secondary and third harmonics. The bicoherence spectrum indicates that the peaks at secondary and third harmonics mainly result from the self-coupling of the primary harmonics and phase coupling between the primary and secondary harmonics respectively. As the water depth increases, the degree of nonlinear coupling between wave components decreases, which leads to the energy of wave components at different frequencies increases. With increasing top width, the length of the shoaling region increases, and the growth of triad nonlinear interactions are observed in wavelet-based bicoherence spectra, resulting in the spectral peak energy decreasing while the secondary harmonics energy increasing in the spectrum. Finally, the potential application of an ecological system composed by "oyster reefs + mangroves" is discussed. As the effect of water depth on wave energy is much greater than that of top width, in artificial oyster reef construction, it is recommended that keep the oyster reefs non-submerged in terms of wave dissipation. Further studies should take the dynamic growth effect of oyster reefs into account.
Keyword ：
nonlinear triad interaction nonlinear triad interaction oyster reef oyster reef spectrum analysis spectrum analysis wave energy wave energy wavelet bicoherence wavelet bicoherence
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jiang, Beihan , Zhang, Hui , You, Tuofu et al. Experimental study on the effect of an oyster reef on the nonlinear characteristics of irregular waves [J]. | FRONTIERS IN MARINE SCIENCE , 2022 , 9 . |
| MLA | Jiang, Beihan et al. "Experimental study on the effect of an oyster reef on the nonlinear characteristics of irregular waves" . | FRONTIERS IN MARINE SCIENCE 9 (2022) . |
| APA | Jiang, Beihan , Zhang, Hui , You, Tuofu , Sun, Yuanmin , Fu, Chenming , Liao, Weijie et al. Experimental study on the effect of an oyster reef on the nonlinear characteristics of irregular waves . | FRONTIERS IN MARINE SCIENCE , 2022 , 9 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Integrated water resource scheduling is a key strategy for controlling river floods as well as for promoting the benefits and abolishing the harmful aspects of water conservancy projects. It is necessary to explore an effective development mode to address the current issues of long development times and poor outcomes for integrated water resource scheduling models. Drawing on the concept of software reuse, a development mode for an integrated water resource scheduling model is offered based on "platform system + model plug-in", the cores of which are plug-in modules and interface integration. The boundaries and connection relations of each plug-in module are formed based on the logical analysis of the model plug-in. A web application mode is used to implement a standardized interface, which can be quickly and seamlessly connected to the system platform. The model is explored and applied in the Wudu diversion and irrigation area in China. The generated model is eventually verified using data obtained from two flood periods. According to the simulation results, the gate operation will be convenient, and the target water level will be attained in the allocated time with a satisfactory peak-clipping effect. It shows both good coordination and great utilization value of the plug-in modules. The concept of designing a plug-in database is eventually taken into consideration for combining and generating an optimization model of each river.
Keyword ：
integrated water resource scheduling integrated water resource scheduling interface encapsulation interface encapsulation model application platform model application platform model plug-in model plug-in Wudu diversion and irrigation area Wudu diversion and irrigation area
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jiang, Beihan , Pan, Long , Qin, Genquan et al. Development of an Integrated Water Resource Scheduling Model Based on Platform Plug-In: A Case Study of the Wudu Diversion and Irrigation Area, China [J]. | WATER , 2022 , 14 (22) . |
| MLA | Jiang, Beihan et al. "Development of an Integrated Water Resource Scheduling Model Based on Platform Plug-In: A Case Study of the Wudu Diversion and Irrigation Area, China" . | WATER 14 . 22 (2022) . |
| APA | Jiang, Beihan , Pan, Long , Qin, Genquan , Su, Xiaolin , Cai, Feng , Liang, Yue . Development of an Integrated Water Resource Scheduling Model Based on Platform Plug-In: A Case Study of the Wudu Diversion and Irrigation Area, China . | WATER , 2022 , 14 (22) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
利用三维荧光光谱技术(EEMs)结合平行因子分析法(PARAFAC)研究了磁湖水体溶解性有机物(DOM)的时空分布特征及其来源,以期为城市富营养化湖泊的治理提供参考。结果表明:(1)磁湖水体DOM主要由陆源类腐殖质组分C1(340/430 nm)、不明腐殖质组分C2(390/480 nm)、类蛋白物质组分C3(290/350 nm)以及自生源类色氨酸组分C4(280/330 nm)这4种荧光组分组成。其中C1对磁湖DOM的贡献最大,C4最小。(2)4种组分存在时空差异,各组分最大荧光值(F_(max))在夏秋季较高,冬春季较低,其中组分C1变化最明显,C3次之;在空间分布上,靠近居民区的湖区F...
Keyword ：
时空分布特征 时空分布特征 来源辨识 来源辨识 溶解性有机物 溶解性有机物 磁湖 磁湖
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 吴晓东 , 马晓婵 , 蒋北寒 et al. 黄石市磁湖水体溶解性有机物的时空分布特征 [J]. | 生态与农村环境学报 , 2020 , 36 (10) : 1276-1284 . |
| MLA | 吴晓东 et al. "黄石市磁湖水体溶解性有机物的时空分布特征" . | 生态与农村环境学报 36 . 10 (2020) : 1276-1284 . |
| APA | 吴晓东 , 马晓婵 , 蒋北寒 , 葛绪广 , 任伟祥 , 秦愿 et al. 黄石市磁湖水体溶解性有机物的时空分布特征 . | 生态与农村环境学报 , 2020 , 36 (10) , 1276-1284 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Abstract: Three-dimensional fluorescence spectrum technology (EEMs) and parallel factor analysis (PARAFAC) were applied to study the space-time distribution characteristics and sources of the dissolved organic matter (DOM) in water of Cihu Lake, in order to provide references for the treatment of urban eutrophic lakes. The results show that in Cihu Lake, DOM mainly consisted of terrestrial humic-like component C1 (340/430 nm), unknown humic-like component C2 (390/480 nm), protein-like component C3 (290/350 nm) and the self-generated tryptophan component C4 (280/330 nm). Among them, C1 was the largest contribution to DOM of Cihu Lake, and C4 was the smallest. There were temporal and spatial differences between the four components of the Cihu Lake. The maximum fluorescence value (Fmax) of each component was higher in summer and autumn, lower in winter and spring. The most obvious component was C1, followed by C3. In terms of spatial distribution, the Fmax value was higher in the area which was close to residential areas, and component C1 changed most obviously. (3) The components of DOM in Cihu Lake was mainly derived from different kinds of humus, followed by endogenous protein-like substances degraded by microorganisms. (4) There was a significant positive correlation between components C1, C2 and C3 in Cihu Lake, which indicate that they had homology. (5) It showed a strong positive correlation with Chl-a conceatration in the absorption coefficient of a350, which indicate that the fluorescence absorption property of DOM was closely related to phytoplankton. © 2020, China Environmental Science Press. All rights reserved.
Keyword ：
Cihu lake; Dissolved organic matter; Source identification; Spatial and temporal distribution characteristics Cihu lake; Dissolved organic matter; Source identification; Spatial and temporal distribution characteristics
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, X.-D. , Ma, X.-C. , Jiang, B.-H. et al. Temporal and spatial distribution characteristics of dissolved organic matter in cihu lake of Huangshi City [J]. | Journal of Ecology and Rural Environment , 2020 , 36 (10) : 1276-1284 . |
| MLA | Wu, X.-D. et al. "Temporal and spatial distribution characteristics of dissolved organic matter in cihu lake of Huangshi City" . | Journal of Ecology and Rural Environment 36 . 10 (2020) : 1276-1284 . |
| APA | Wu, X.-D. , Ma, X.-C. , Jiang, B.-H. , Ge, X.-G. , Ren, W.-X. , Qin, Y. et al. Temporal and spatial distribution characteristics of dissolved organic matter in cihu lake of Huangshi City . | Journal of Ecology and Rural Environment , 2020 , 36 (10) , 1276-1284 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
本实用新型公开了一种水利工程河道的直立式挡墙，包括挡墙、连接槽、连接凸块、密封条、底板、支撑板、种植槽、栏杆、透气孔和固定桩。本实用新型的有益效果是：挡墙的表面为波浪形，可以减少水流对挡墙墙面的正面冲击力，挡墙和底板之间连接的支撑板为三角形，在保证该直立式挡墙坚固度的同时降低了重量，连接槽和连接凸块尺寸相对应即连接凸块可安插到连接槽内，可以在别的地方建造好然后运到现场安装，连接槽内部固定有一层橡胶制密封条，多个挡墙连接在一起时可以连接的更加紧密，底板底部均匀固定有多个圆柱形的固定桩，使得该直立式挡墙放置的更加稳定，种植槽的外侧槽板上留有多个透气孔，透气孔可以方便种植多种植物。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 蒋北寒 , 岳毅超 , 林锡燃 et al. 一种水利工程河道的直立式挡墙 : CN201721560078.4[P]. | 2017/11/21 . |
| MLA | 蒋北寒 et al. "一种水利工程河道的直立式挡墙" : CN201721560078.4. | 2017/11/21 . |
| APA | 蒋北寒 , 岳毅超 , 林锡燃 , 彭国平 . 一种水利工程河道的直立式挡墙 : CN201721560078.4. | 2017/11/21 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
本实用新型公开了一种水利工程用的疏通导流管，包括进水头、进水管、第一连接板、排污管、第二连接板、连接管、出水管、活塞、支撑座、旋转把手、旋转杆、翼片和小孔。本实用新型的有益效果是：通过在活塞内部设置旋转杆，以及在旋转杆的周围设置翼片可以使水流带动旋转杆旋转，通过旋转杆旋转带动翼片在水流中旋转，进而翼片可以搅动水流中泥沙，进而可以防止由于水流中的泥沙在水管中堆积造成水管堵塞；通过在进水管的进水口处设置进水头，以及在进水头的侧壁设置小孔，可以过滤水中体积较大的杂质，进而防止体积较大的杂质堵塞水管；通过在进水管底部设置排污管可以将沉淀在水管底部的泥沙从水管中抽出，进而方便工人对水管进行清洗。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 蒋北寒 , 林锡燃 , 岳毅超 et al. 一种水利工程用的疏通导流管 : CN201721560074.6[P]. | 2017/11/21 . |
| MLA | 蒋北寒 et al. "一种水利工程用的疏通导流管" : CN201721560074.6. | 2017/11/21 . |
| APA | 蒋北寒 , 林锡燃 , 岳毅超 , 彭国平 . 一种水利工程用的疏通导流管 : CN201721560074.6. | 2017/11/21 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
