The diffusion fluxes and sediment activity of phosphorus in the sediment-water interface of Poyang Lake

被引：6
|
作者：
Yang, Zhiping [1 ,2 ]
Liang, Tao [1 ]
Li, Kexin [1 ]
Zhang, Qian [1 ]
Wang, Lingqing [1 ]
机构：
[1] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
[2] Office Mountain River Lake Dev Comm Jiangxi Prov, Nanchang, Peoples R China
来源：
JOURNAL OF FRESHWATER ECOLOGY | 2016年 / 31卷 / 04期
关键词：
Phosphorous; high-resolution pore water diffusion balance technology (HR-Peeper); Zr-oxide diffusive gradients in thin films (Zr-oxide DGT); pore water; sediment; lake; IN-SITU; NUTRIENT FLUXES; THIN-FILMS; P RELEASE; SPECIATION; AUSTRALIA; NITROGEN; CARBON; CHINA; BAY;
D O I：
10.1080/02705060.2016.1181113
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
The dissolved reactive phosphorous (DRP) in pore water releases into the water body through the sediment-water interface. The DRP concentrations in the water and sediment of Poyang Lake were determined by high-resolution pore diffusion balance (HR-Peeper) and Zr-oxide diffusive gradients in thin films (Zr-oxide DGT) techniques. The range of the DRP concentrations in the pore water samples of different sampling sites was 30-360 ng/cm(3). The diffusion fluxes of DRP in the sediment-water interface were calculated based on the DRP concentration gradients. The range of DRP flux in Poyang Lake was 4.78-40.5ng m(-2) d(-1) with an average value of 14.7ng m(-2) d(-1). The results showed that the P diffusion flux was higher in the middle of the Poyang Lake than both upstream and downstream of the lake.
引用
收藏
页码：521 / 531
页数：11
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