Analysis of the saltwater intrusion in the Changjiang estuary during the flood season in extreme drought year;

The main dynamic factors affecting the Changjiang River mouth saltwater intrusion are upstream runoff and outsea tide.

To exploit and utilize the freshwater resources of the Changjiang Estuary,studies on the pollutants of estuarine waters and the spatial and temporal variation of saltwater intrusion are very important.

The applications of the jet theory in the environmental protection,including the ocean disposal project for sewage,the jet dredging,the jet aeration for improving water quality,the cavitation for controlling eutrophication,and the bubble plumes preventing salt water intrusion,were comprehensively summarized and analyzed.

Nine automatic monitoring stations along the path of salt water intrusion were established around the Changjiang Estuary for automatic and real-time monitoring of the surface salinity and water temperature on a continuous basis.

Inverse back analysis of 3-D aquifer parameters of sea water intrusion by BP artificial neural network;

Mechanism of sea water intrusion in China s coastal areas and its prevention countermeasures;

Statistics for the chloride ion in the ground water in coastal sea water intrusion areas;

Research on groundwater management model and its application based on unit pulse saline intrusion response matrix;

ased on analysis of forming mechanism of saline intrusion, conjugating realisty of saline intrusion in our country, this paper discusses primarily dynamic process and final location of saline intrusion in case of overexploitation of fresh water.

Based on analysis of basic facts, contradiction and causes of saline intrusion development at its various stages, the authors advance basic theory of saline intrusion and regard saline intrusion theories at various stages in research history as special cases of basic theory under different conditions.