印度西海岸沿海泻湖——韦姆巴纳德湖的甲烷排放
Methane emissions from a coastal lagoon: Vembanad Lake, West Coast, India.
作者信息
Verma Anuradha, Subramanian V, Ramesh R
机构信息
School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India.
出版信息
Chemosphere. 2002 Jun;47(8):883-9. doi: 10.1016/s0045-6535(01)00288-0.
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 mgm(-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.
人们已尝试估算印度西海岸一个泻湖——韦姆巴纳德湖这一热带沿海湿地的甲烷通量。研究发现，韦姆巴纳德湖向大气排放了大量甲烷。湖内甲烷平均排放量在空间上存在差异。库马勒加姆（淡水区域）的甲烷排放速率为193.2±24.5毫克·平方米⁻¹·小时⁻¹，而普拉洛特（微咸水区域）的排放速率为9.3±9.6毫克·平方米⁻¹·小时⁻¹。季风前后的季节性变化显著。土壤温度、一天中的时间、盐度、沉积物有机碳，都对韦姆巴纳德湖的甲烷排放速率产生控制作用。
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