浅水湖泊表层沉积物磷素赋存形态及其相关性分析  

Phosphorus forms in surface sediments of shallow lake and their correlation analysis

作　　者：李思敏[1] 白苏媛 张炜[1] 

机构地区：[1]河北工程大学城市建设学院,河北邯郸056038

出　　处：《环境污染与防治》2014年第5期9-12,共4页Environmental Pollution & Control

基　　金：国家水体污染控制与治理科技重大专项(No.2012ZX07203-003);河北省应用基础研究计划重点基础研究项目(No.12966738D)

摘　　要：以邯郸南湖这一城市浅水人工湖泊为研究对象,通过对南湖7个典型区域的连续采样监测研究表层沉积物中磷素的赋存形态,并采用线性回归法进行不同形态磷素的相关性分析。结果表明,邯郸南湖沉积物中总磷的富集水平为540～2 072mg/kg,其中主要以无机磷素的形态存在,占TP的50.38%～71.14%。而无机磷素中以闭蓄态磷和钙磷为主,分别占无机磷素的32.80%～42.37%、33.56%～53.09%。沉积物中有机磷素是南湖磷素内源污染的主要来源。相关性分析表明,有机磷素与总磷呈现良好的趋同性。削减有机污染负荷及加强水生植物管理是南湖水体内源污染控制的有效途径。South lake of Handan,a typical man-made shallow lake,was selected as research objected to investigate the phosphorus forms in surface sediments of shallow lake.The phosphorus forms in surface sediments of 7typical sites were studied by continuous sampling and monitoring method,and linear regression was applied to analyze the correlations between different phosphorus forms.The results showed that TP concentration in surface sediments of South Lake ranged 540-2 072mg/kg.Inorganic phosphorus（IP）was the major form of phosphorus in surface sediment,which contributed 50.38%-71.14%of TP.Occluded phosphorus（O-P）and Ca-bound phosphorus（Ca-P）were the main parts of IP in the sediments,they accounted for 32.80%-42.37% and 33.56%-53.09% of IP respectively. Organic phosphorous（Org-P）was the primary source of internal phosphorus pollution in South Lake.The relationship between TP and Org-P could be well represented by the linear function.Decreasing organic pollution load and strengthening hydrophytes management were the effectual measures for internal pollution control in South Lake.

关 键 词：浅水湖泊 沉积物 磷素赋存形态 相关性分析 

分 类 号：X524[环境科学与工程—环境工程]