Methane emissions from a coastal lagoon: Vembanad Lake, West Coast, India

被引:51
|
作者
Verma, A [1 ]
Subramanian, V [1 ]
Ramesh, R [1 ]
机构
[1] Jawaharlal Nehru Univ, Sch Environm Sci, New Delhi 110067, India
关键词
methane emission; variation; coastal; Vembanad; wetland;
D O I
10.1016/S0045-6535(01)00288-0
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
An attempt has been made to estimate methane fluxes from a tropical coastal wetland the Vembanad Lake, a lagoon along the West Coast of India. It has been found that Vembanad Lake contributes significant amount of methane to the atmosphere. Average emissions varied spatially within the lake. Methane emissions were 193.2 +/- 24.5 mg m(-2) h(-1) at Kumaragam (fresh water) as compared to 9.3 +/- 9.6 mg m(-2) h(-1) at Pullot (brackish water) site. Seasonal variation was significant between pre- and post-monsoons. Soil temperature, time of the day, salinity sediment organic carbon, all control the rate of methane emissions from the Vembanad Lake. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:883 / 889
页数:7
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