2007•Huanjing jiance guanli yu jishuRequires access
Distribution of Phosphorus Speciation in Lake Xuanwu Sediments
Gong Chun-sheng
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Abstract
Distribution of phosphorus speciation in lake Xuanwu sediments was analyzed with classification extraction method.The studies indicated that the concentration of aluminum bound phosphorus(Al-P) was low in the sediment and the average value was 64 mg/kg.Among the other speciation of phosphorus,iron bound phosphorus(Fe-P) was 241 mg/kg,organic phosphorus(Org-P) 335 mg/kg,CaCO3 bound phosphorus(Ca-P) 394 mg/kg.The Fe-P,which can be released into the gap and the upper water when environment changes,is the important factor of lake eutrophication.The Al-P has little impacted lake eutrophication because of its low concentration.The Ca-P was relatively stable and hardly used by biology.The Org-P has impacted organic load and influences lake eutrophication.