Comparison of N2O flux following brackish Cyperus malaccensis marsh conversion to shrimp pond in the Min River estuary
TAN Li-shan1, YANG Ping1,2, XU Kang1, CHEN Kun-long1, HUANG Jia-fang1,2,3, TONG Chuan1,2,3
1. School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;
2. Key Laboratory of Humid Sub-tropical Eco-geographical Process, Ministry of Education, Fuzhou 350007, China;
3. Research Centre of Wetlands in Subtropical Region, Fujian Normal University, Fuzhou 350007, China
Temporal variations of the N2O flux from the Cyperus malaccensis marsh ecosystem and at the water-air interface of the shrimp pond converted from C. malaccensis marsh were determined using static chamber and floating chamber technique from May 2016 to November 2016 in the Shanyutan Wetland of the Min River estuary, Southeast China. The pore water chemical parameters in the C. malaccensis marsh and the water column physical, chemical parameters of the shrimp pond were measured simultaneously. N2O flux from the C. malaccensis marsh and at the water-air interface of the shrimp pond ranged from -113.11 to 206.57μg/(m2·h) and from -2.27 to 143.25μg/(m2·h), respectively, with the average values of (38.35±24.44)μg/(m2·h) and (46.44±15.93)μg/(m2·h), respectively. Both C. malaccensis marsh and shrimp pond functioned as a source of atmosphere N2O. The N2O flux from the C.malaccensis marsh was significant positive correlated with salinity and nutrient content of pore water, and the N2O flux at the water-air interface of the shrimp pond was significant positive correlated with water depth, salinity and nutrient content of water column.
谭立山, 杨平, 徐康, 陈坤龙, 黄佳芳, 仝川. 闽江河口短叶茳芏湿地及围垦后的养虾塘N2O通量比较[J]. 中国环境科学, 2017, 37(10): 3929-3939.
TAN Li-shan, YANG Ping, XU Kang, CHEN Kun-long, HUANG Jia-fang, TONG Chuan. Comparison of N2O flux following brackish Cyperus malaccensis marsh conversion to shrimp pond in the Min River estuary. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(10): 3929-3939.
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