4.5 Article

Application of Habitat Suitability Model Coupling with High-precision Hydrodynamic Processes

期刊

ECOLOGICAL MODELLING
卷 462, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.ecolmodel.2021.109792

关键词

High-precision hydrodynamic model; Habitat suitability model; Weighted usable area; Discharged flow; Habitat suitability index

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资金

  1. Numerical Simulation of Flood Process in Urban Areas with Fine Terrain and Lack of Pipe Network Data [52079106]
  2. High Resolution Numerical Simulation of Sediment Carrying Capacity Mechanism and Erosion Process of Over surface Flow on Whole Sand Slope [52009104]
  3. Chinesisch-Deutsches Mobilit taprogramm: High - Resolution Numerical Simulating and Predicting Methods for Urban Floods [M-0427]

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This study combined the habitat suitability model with a two-dimensional high-precision hydrodynamic model, achieving successful simulation of the spawning habitat of Gymnocypris eckloni in the lower reaches of a hydropower station in the Upper Yellow River. By introducing GPU acceleration technology to improve simulation efficiency, the model provided a scientific basis for protecting the integrity of the river ecosystem.
The habitat suitability model is coupled with the two-dimensional high-precision hydrodynamic model in this paper. In the model, finite volume method (FVM) with Godunov type is adopted to solve the two-dimensional hydrodynamic process, which has good robustness and second-order temporal and spatial accuracy; Habitat suitability model is constructed by habitat suitability index based on IFIM theory. Meanwhile, the introduction of GPU acceleration technology greatly improves the simulation efficiency. Combined with the results of River2D, the results of this model have good accuracy. The model was applied to simulate the spawning habitat of Gymnocypris eckloni in the lower reaches of a hydropower station in the Upper Yellow River, and the reasonable discharged flow of hydropower station required for a good spawning habitat was 74 m3/s. It increased by 53.377% compared with the average annual discharge in May of the natural river. The evaluation of the spawning habitat of Gymnocypris eckloni provides a scientific basis for protecting the integrity of river ecosystem in this paper.

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