Study on CO2 Emission from Newly Created Marshes of Pengxi River in the Three Gorges Reservoir
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 ehamber-GC techniques. The results showed high spatial variation of CO2 emissions among the four stands. The greatest CO2 emission (627. 8 ± 335. 9 mg·m-2·h-1) was observed in the Scirpus triqueter stand. The smallest CO2 emission (450. 4 ± 271. 5 mg·m~· h1 ) 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 ).
carbon dioxide emission newly created marshes Pengxi River Three Gorges Reservoir
WU Yu-yuan CHEN Huai LIN Fang-miao YUAN Xing-zhong
College of Resources and Environment, Chongqing University, Chongqing 400030 Key laboratory of South College of Forestry, Northwest A & F University Yangling Shanxi 712100, China
国际会议
重庆
英文
176-180
2011-10-01（万方平台首次上网日期，不代表论文的发表时间）