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- W2371621167 abstract "Internal phosphorus contamination plays a key role in eutophication when the external contamination be controlled effectively. Therefore, it is significant that study the distribution of phosphorus in the sediments, influence factors of the control of eutrophication at Lake Dianchi. This paper uses sediment sampling in Caohai of Dianlake. The main results were as following: Every form phosphorus contents and the space distribution characteristic displayed the obvious difference. Average contents of O-P, Ca-P, Al-P, Fe-P were 804.08mg/kg, 768.35mg/kg, 167.29mg/kg,63.01mg/kg in Cao Hai respectively. The contents of phosphorus form in sediment were :O-P Ca-P Al-P Fe-P. The O-P contents that the organic compound were maximal, and every form phosphorus existed difference. The contents of total P,O-P, Ca-P, Al-P, Fe-P of sediment in southwest, north and middle east area were the higher than the other areas of Dian Lake. The physics and chemistry of sediment and overlying water were the key factors of the effect on phosphorus form character in sediment. Firstly, there were significant correlations between the total phosphorus and O-P(R2=0.741*),Ca-P(R2=0.678*) of sediment. And the pH displays significant negative correlations with Al-P(R2=0.714*),Fe-P(R2=0.664*). Organic matter and O-P were significant correlations(R2=0.758*). Secondly, there were significant negative correlations between DO of overlying water and Fe-P(R2=0.750*). And the chlorophyll a of overlying water displayed significant correlations with Al-P(R2=0.601*).The result showed that the relations existed between organic, pH and phosphorus form release of sediment. At the same time, DO of overlying water restricted Fe-P release and thechlorophyll a of overlying water promoted Al-P release of sediment." @default.
- W2371621167 created "2016-06-24" @default.
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- W2371621167 date "2013-01-01" @default.
- W2371621167 modified "2023-09-23" @default.
- W2371621167 title "Sediment phosphorus form, space distribution characteristic and influencing factor of Cao Hai in Dian Lake,Yunnan, China." @default.
- W2371621167 hasPublicationYear "2013" @default.
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