The variation patterns and correlations of total phosphorus, organic phosphorus and phosphate in the Changjiang Estuary

On the basis of the data of two cruises in the Changjiang River mouth during the "rainy season" ofAugust 1981 and the "dry season" of November of the same year, this article analyzes the horizontal distribution,the sectional distribution and the diurnal variations of total phosphorus (T. P. ), organic phosphorus (O. P. ) andphosphate (PO4), and at the same time summarizes their distributional patterns. It makes also statistic and correlative analyses on different species of phosphorus, their behaviours and characteristics of cycling process in theChangjiang Estuary.