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Journal of Freshwater Ecology Volume 19, 2004 - Issue 4
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Original Articles

Diel Variation of Methane Fluxes in Summer in a Eutrophic Subtropical Lake in China

Yangping Xing
,
Ping Xie
,
Hong Yang
,
Leyi Ni
,
Yuesi Wang
&
Wenhao Tang
Pages 639-644 | Received 12 Jan 2004, Accepted 18 May 2004, Published online: 07 Jan 2011
 
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ABSTRACT

The summer diel variation of methane (CH4) flux was investigated in a eutrophic, subtropical lake in China. The CH4 concentration was always supersaturated, and the emission rate ranged from 0.24 to 45.51mg m−2h−1. The diel variations of CH4 flux in June and August showed a single peak in early afternoon and a minimum in the morning, while the pattern varied irregularly in May. There was a moderate relationship between water and sediment temperature and CH4 emission rate in some months.

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