城市浅水湖泊沉积物磷形态分布及其与间隙水磷的关系  

Distribution of Phosphorus Forms in Sediments and Their Relationships with Phosphorus Concentrations in Interstitial Water of Urban Shallow Lake

作　　者：李璜[1] 徐颖[1,2] 朱明珠[1] 方盛荣[1] 

机构地区：[1]河海大学环境科学与工程学院,南京210098 [2]河海大学水文水资源与水利工程科学国家重点实验室,南京210098

出　　处：《环境保护科学》2009年第5期8-10,51,共4页Environmental Protection Science

基　　金：国家自然科学基金(50479022)

摘　　要：研究了典型城市浅水湖泊莫愁湖沉积物中磷形态及间隙水中TDP、PO43--P含量的垂向分布情况,沉积物中IP是TP的主要组成部分,与湖泊富营养化密切相关的Fe-P占IP的30%左右,Or-P占TP的30%左右。柱状沉积物中磷形态的垂向分布规律比较复杂,但基本上随深度先增后减的趋势。沉积物中TPI、P、Or-P、Ca-P、Fe-P、DP之间都具有极显著的正相关关系,但与Al-P、Oc-P的相关关系不明显,间隙水中TDP、PO43--P浓度与沉积物中Or-P含量具有显著的正相关关系,但相关程度并不高,与其他形态则没有明显的相关关系。Phosphorus forms in sediments and vertical distribution of phosphorus forms in interstitial water of typical urban shallow lake Mochou were investigated. IP（ inorganic phosphorus） was the major part of TP, Fe- P（ Ferrum phosphorus） was closely related to eutrophication, which accounted for about 30% of IP, Or- P（organic phosphorus） accounted for about 30% of TP. Vertical distributions of phosphorus forms in core sediments were complicated, basically exhibited a trend of firstly increased and then decreased with depth. There are extremely significantly positive correlations among TP.IP.Or- P.Ca - P.Fe - P and DP, while not obviously correlated with Al - P. Oc - P, concentrations of TDP.PO4^3- - P in interstitial water were correlated with Or- P, while no obvious correlation could be found with other phosphorus forms.

关 键 词：沉积物 莫愁湖 磷形态分布 间隙水 相关性 

分 类 号：X703[环境科学与工程—环境工程] P512.2[天文地球—地质学]