Variations of alkaline phosphatase activity and P fractions in sediments of a shallow Chinese eutrophic lake (Lake Taihu)

被引：104

作者：

Zhang, Tingxi ^{[1
]}

Wang, Xiaorong ^{[1
,2
]}

Jin, Xiangcan ^{[3
]}

机构：

[1] Nanjing Univ, State Key Pollut Control & Resources Reuse, Nanjing 210093, Peoples R China

[2] Nanjing Normal Univ, Sch Chem & Environm Sci, Nanjing 210097, Peoples R China

[3] Chinese Acad Sci Environm Sci, Res Ctr Lake Environm, Beijing 100012, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2007年 / 150卷 / 02期

基金：

中国国家自然科学基金;

关键词：

alkaline phosphatase activity; vertical distribution; sediment; phosphorus fractions; Lake Taihu;

D O I：

10.1016/j.envpol.2007.01.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The distribution of alkaline phosphatase activity (APA) and P fractions in sediment cores and the relationship between them were studied in a shallow Chinese freshwater lake (Lake Taihu). Sediment cores were collected from four sites, characterized by different degrees of eutrophication in June 2004. Sediment P was fractionated into Fe/Al-P, Ca-P, organic P (OP), inorganic P (IP) and total P (TP). The former two species made the largest contribution to the sediment P pool. Results show that trophic status and hydrological conditions have great impact on the APA of the sediments. The order of the APA in sediments was conjectured to be: macrophyte dominated lake > transitional lake > algal dominated lake. APA profiles follow a similar downcore decreasing trend. There was a positive relationship between the APA and the TP, IP. The multiple linear regression equation of the APA and P fractions is: APA = -97 + 0.768TP - 0.985Fe/Al-P. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：288 / 294

页数：7

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