Efficient and high-precision habitat simulation method coupled with habitat suitability model

Abstract

The invention discloses a high-efficiency and high-precision habitat simulation method coupled with a habitat suitability model, and the method comprises the steps: employing a high-resolution DEM terrain of a rectangular grid, and carrying out the assignment of related parameters through known conditions; based on a Godunov format center finite volume method spatial discretization two-dimensional shallow water equation, higher spatial discretization precision is obtained; the second-order precision of time and space is further realized through MUSCL reconstruction and a Runge-Kutta method; on the basis of the IFIM theory, a habitat suitability model is constructed by adopting a suitability index HSI, so that coupling of the hydrodynamic process and the habitat suitability model is realized; and a GPU acceleration technology is introduced to improve the simulation efficiency. Therefore, the efficient and high-precision habitat simulation method coupled with the habitat suitability model is constructed. According to the method, the simulation accuracy of the habitat factors in the habitat model is improved, effective technical support is provided for accurately simulating river hydraulic characteristics and biological habitats, and the method becomes a powerful tool for evaluating the biological habitat quality.

Description

technical field [0001] The invention belongs to the technical field of biological habitat simulation methods, and in particular relates to a high-efficiency and high-precision habitat simulation method coupled with a suitable habitat model. Background technique [0002] For a long time, people have taken a series of measures for ecological operation of reservoirs and ecological restoration of rivers to alleviate the pressure of water conservancy projects on river ecosystems. For this reason, many simulation methods have been proposed to solve such problems, among which the habitat model has become the most widely used method in the world. , such as PHABSIM model and River2D model. The accuracy of habitat factors is crucial for habitat models to more accurately simulate river ecological environments and evaluate the quality of aquatic habitats. In recent years, in order to improve the temporal and spatial resolution of habitat variables, more and more hydraulic models have b...

AI Technical Summary

Problems solved by technology

However, for high-resolution terrain data and large rivers with complex flow regimes, these models still have shortcomings such as insufficient simulation accuracy and long simulation time.

Images