Based on the remote technique and 5 remote images,waterline of qualitative reversion during the 17 years\' time span was obtained and the rate of scouring and silting of lagoon tidal-flat was also further calculated.

Storm Event Records from the Lagoon Sediment on Yongshu Reef of the Nansha Islands since Late Holocene;

Seasonal accumulation and bioavailabilities of phosphorous in the tidal flat surface sediments from the Yangtze estuary;

Heavy metal accumulation features and significance in tidal flat surface sediments of Guanhe Estuary;

Distribution of biogenic silica in tidal flat sediments of Yangtze Estuary and its influence factors;

In 1998-1999, contents of inorganic nitrogen (NH4N, NO3N and NO2N) in water and sediment of intertidal flats of Shanghai coast were investigated at three stations (CY, DH and LY).

It is indicated that the adsorption of sediments on NH~+_4-N shows linear Changes in the possible range of NH~+_4-N in overlying waters and porewaters from the intertidal flat of the Changjiang Estuary.

The development of intertidal flat in river mouths depends on favorable conditions such as riverborn sediment supply, estuarine hydrodynamics and morphology of seabed.

Nitrogen profiles in core sediment and interstitial water of tidal flats in Changjiang(Yangtze)River Estuary;

In this paper, a total of 56 relatively nonpoint source pollution sediment s amples were collected from the tidal flats of the Jiuduansha shoal and the Chong ming island of the Yangtze river estuary.