littoral wetlands
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2020 ◽  
Vol 12 (14) ◽  
pp. 5674
Author(s):  
Junxiang Cheng ◽  
Ligang Xu ◽  
Mingliang Jiang ◽  
Jiahu Jiang ◽  
Yanxue Xu

Littoral wetlands are globally important for sustainable development; however, they have recently been identified as critical hotspots of nitrous oxide (N2O) emissions. N2O flux from subtropical littoral wetlands remains unclear, especially under the current global warming environment. In the littoral zone of Lake Poyang, a simulated warming experiment was conducted to investigate N2O flux. Open-top chambers were used to raise temperature, and the static chamber-gas chromatograph method was used to measure N2O flux. Results showed that the littoral zone of Lake Poyang was an N2O source, with an average flux rate of 8.9 μg N2O m−2 h−1. Warming significantly increased N2O emission (13.8 μg N2O m−2 h−1 under warming treatment) by 54% compared to the control treatment. N2O flux in the spring growing season was also significantly higher than that of the autumn growing season. In addition, temperature was not significantly related to N2O flux, while soil moisture only explained about 7% of N2O variation. These results imply that N2O emission experiences positive feedback effect on the ongoing warming of the climate, and abiotic factors (e.g., soil temperature and soil moisture) were not main controls on N2O variation in this littoral wetland.



2007 ◽  
Vol 15 (6) ◽  
pp. 529-535 ◽  
Author(s):  
Sam Bikangaga ◽  
Maria Pia Picchi ◽  
Silvia Focardi ◽  
Claudio Rossi


2004 ◽  
Vol 33 (3) ◽  
pp. 412-430 ◽  
Author(s):  
Manuel Ortega ◽  
Josefa Velasco ◽  
Andr�s Mill�n ◽  
Cristina Guerrero


2003 ◽  
Vol 9 (3) ◽  
pp. 413-424 ◽  
Author(s):  
SARI JUUTINEN ◽  
JUKKA ALM ◽  
TUULA LARMOLA ◽  
JARI T. HUTTUNEN ◽  
MICAELA MORERO ◽  
...  


2000 ◽  
Vol 36 (3) ◽  
pp. 725-735 ◽  
Author(s):  
Hrund Ó. Andradóttir ◽  
Heidi M. Nepf


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