%0 Journal Article
%T Study on CO2 Emission from Newly Created Marshes of Pengxi River in the Three Gorges Reservoir
%A WU Yu-yuan
%A CHEN Huai
%A LIN Fang-miao
%A YUAN Xing-zhong
%J Journal of Chongqing Normal University
%D 2012
%I Chongqing Normal University
%X From early July to late September 2008, we studied CO2 emissions from 4 different stands in newly created marshes of the Pengxi River, using static opaque chamber-GC techniques. The results showed high spatial variation of CO2 emissions among the four stands. The greatest CO2 emission (627.8 ¡À 335.9 mg¡¤m-2¡¤h-1) was observed in the Scirpus triqueter stand. The smallest CO2 emission (450.4 ¡À 271.5 mg¡¤m-2¡¤h-1) was observed in the Juncus amuricus stand.Standing water depths and above-ground biomass were important factors in explaining these spatial variations in CO2 emissions. We also found a typical seasonal variation of CO2 emissions in this area, with maximal emissions ranging from mid-July to mid-August. The seasonality of CO2 emissions in the newly created marshes was found to be closely related to water temperature and soil temperature (r = 0.577, 0. 557 (5 cm),p < 0.001).
%K carbon dioxide emission
%K newly created marshes
%K Pengxi River
%K Three Gorges Reservoir
%U http://journal.cqnu.edu.cn/1203/pdf/120332.pdf