Development of environmental decision support system for tidal river networks and its application to the Pearl River Delta;

In recent years, prompted by the urgent need of water pollution control, scientists and engineers on the Pearl River Delta have developed a series of flexible, accurate, and easy to use mathematical models especially suitable for tidal river networks; at the same time many new concepts and new techniques with academic as well as practical values have been advanced.

EDSS is a comprehensive software system for water quality management in tidal river networks in general and for the Pearl River Delta in specific.

Based on the hydrodynamics features,this paper builds a one-dimensional hydrodynamic mathematical model to simulate the variation of water level and flow rate in the tidal river network.

Numerical simulation of regulation for tidal estuary inlet;

Numerical simulation of flood on movable bed of a tidal estuary;

Effects of multi-bridge piers on flooding at tidal estuary;

The necessity to adjust salinity in the sand analysis of the tidal river is raised and the method to check salinity and correct it is designed.