近海系统化生态-沉积-环境动力学数值模式——理论基础

Theoretical Basics of a Systematic Ecology-Sediment-Environment Dynamical Numerical Model for Coastal Areas

基于中国近海生态环境、泥沙沉积、生态养殖等方面的研究和评价需要,本研究拟发展一套海洋生态-沉积-环境动力学耦合模式,包括生态、沉积物输运、精细化水质、养殖、物质扩散及粒子追踪和评估评价六个模块,其通过相互之间耦合,协同构成一个功能全面的系统模式。模式特别考虑沉积和养殖对水动力的作用、沉积物的光效应、有机颗粒物在海底的沉积和再悬浮等问题或过程。作为系统模式研究的先行工作,本文阐述了模式的理论基础,包括构建模型系统的概念框架,模式中典型的物理、生物、化学、沉积过程的理论介绍及其主要参数化表达方式,并给出了已有模块包括耦合模块的模拟结果。

To meet the demand of research and assessment on ecology, sediment, and aquaculture in the coastal areas of China Seas, an systematic ecology-sediment-environment coupled numerical model, which includes the ecological, sediment transport, elaborate water quality, aquaculture, diffusion and particle tracking, assessment evaluation modals, is established. All modules are effectively coupled together, and the hydrodynamic effects of deposition and breeding, the effects of sediment concentrations on phytoplankton, and the processes of deposition and resuspension of organic particles on seabed are all considered in the numerical model. As a pioneering work of the model, basic theories of model establishment, including the construction of the framework of the model, major physical and biochemical processes, and numerical simulations are given.