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

Lu Yang, Jingming Hou, Long Cheng, Pan Wang, Zhanpeng Pan, Tian Wang, Yongyong Ma, Gao Xujun, Sun Jixin and Na Liu

Ecological Modelling, 2021, vol. 462, issue C

Abstract: 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.

Keywords: High-precision hydrodynamic model; Habitat suitability model; Weighted usable area; Discharged flow; Habitat suitability index (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:462:y:2021:i:c:s0304380021003392

DOI: 10.1016/j.ecolmodel.2021.109792

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