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.

The features of NH_4~+-N concentration changes within a tidal cycle at the sediment-water interface in the edge of of high tidal flat;

According to the assessment by pollution load index method,in Chongming Wetland which was mainly with silty soil,both medium and high tidal flats were moderately polluted with heavy metals, while low-tidal flat had not been polluted.