RT Journal T1 RELATIONSHIPS OFPHOSPHORUSFORMS INSEDIMENTS OF FUBAO GULF, LAKE DIANCHI, CHINA A1 F. X. Chen A1 S. Y. Lu A1 X. C. Jin A1 J. N A1 Guo JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 25 IS 3 SP 190 OP 196 YR 2015 FD 2015/06/01 DO DOI NA AB

Phosphorus (P) forms found in lake sediments provide information that is important for eutrophication control. Contents of nine kinds of phosphorus forms in five top-layer (0–10 cm) sediment samples collected from Lake Dianchi, China were investigated. Inorganic phosphorus (I-P) comprised 62.3–78.2% of TP in these samples, owing to the low level of aquatic life caused by the high content of external pollutant sources and the low water exchange rate of once annually. Algae significantly deplete sedimentary P, resulting in low BAP forms in the sediment. Aluminum (Al) and manganese (Mn) oxides and iron hydroxides (Fe-P), organic phosphorus (Org-P),and calcium-bound P (Ca-P) were significantly correlated with TP content in the top sediment layers. The correlation between I-P and Fe-P content was also significant in these layers. All BAPs showed low correlation with Org-P. It was concluded that the bioavailability of TP in sediment is affected by inflow and anthropogenic activities. The P species and contents in the sediments are useful for the cognition of environmental geochemical behavior of P in the sediment of Dianchi Lake, and this is of great importance for the pollutant load, especially the internal load, control and environmental restoration of Lake Dianchi.

K1 Bioavailable phosphorus,Correlation, Lake Dianchi, Phosphorus forms, Sediment PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-328