| 三峡库区香溪河秋末至中冬CO2和CH4分压特征分析 |
| |
| 引用本文： | 张军伟,雷丹,肖尚斌,张成,穆晓辉,刘佳,李迎晨.三峡库区香溪河秋末至中冬CO2和CH4分压特征分析[J].环境科学,2016,37(8):2924-2931. |
| |
| 作者姓名： | 张军伟 雷丹 肖尚斌 张成 穆晓辉 刘佳 李迎晨 |
| |
| 作者单位： | 三峡大学水利与环境学院, 宜昌 443002,三峡大学水利与环境学院, 宜昌 443002,三峡大学水利与环境学院, 宜昌 443002,三峡大学电气与新能源学院, 宜昌 443002,三峡大学水利与环境学院, 宜昌 443002,三峡大学水利与环境学院, 宜昌 443002,三峡大学水利与环境学院, 宜昌 443002 |
| |
| 基金项目： | 国家自然科学基金项目（41273110）；湖北省自然科学基金项目（2014CFB672，2015CFC834） |
| |
| 摘 要： | 为揭示三峡库区支流库湾表层水体秋末至中冬CH_4和CO_2的分压特征及其影响因素,于2014年相应时间段在香溪河库湾每天定点定时采取表层水样,利用顶空气相色谱技术测定水中溶解CH_4和CO_2的浓度,通过亨利定律计算CH_4和CO_2的分压,并同步监测相关环境因子.结果表明,表层水体CH_4分压变化范围0.64~4.43 Pa,平均值为(1.69±0.94)Pa,CO_2分压变化范围49.90~868.91 Pa,平均值为(328.48±251.63)Pa.水体CO_2和CH_4分压的变化呈显著负相关(r=-0.618,P0.01),p CH_4和p CO_2与溶解氧、总磷、叶绿素a、p H水温和水位相关性明显,其中p CO_2与各环境因子的相关性较p CH_4更为密切.
|
| 关 键 词： | 溶解气体 分压 环境因子 三峡水库 香溪河库湾 |
| 收稿时间： | 2015/10/29 0:00:00 |
| 修稿时间： | 4/6/2016 12:00:00 AM |
Partial Pressure of Carbon Dioxide and Methane from Autumn to Winter in Xiangxi Bay of the Three Gorges Reservoir |
| |
| ZHANG Jun-wei,LEI Dan,XIAO Shang-bin,ZHANG Cheng,MU Xiao-hui,LIU Jia and LI Ying-chen.Partial Pressure of Carbon Dioxide and Methane from Autumn to Winter in Xiangxi Bay of the Three Gorges Reservoir[J].Chinese Journal of Environmental Science,2016,37(8):2924-2931. |
| |
| Authors: | ZHANG Jun-wei LEI Dan XIAO Shang-bin ZHANG Cheng MU Xiao-hui LIU Jia and LI Ying-chen |
| |
| Institution: | College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China,College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China,College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China,College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China,College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China,College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China and College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China |
| |
| Abstract: | The Concentrations of dissolved CH4 and CO2 in Xiangxi Bay of the Three Gorges Reservoir from autumn to winter in 2014 were determined with headspace gas chromatography technology. Then their partial pressures of CH4 and CO2 were calculated according to the Henry''s law. Their temporal variation and the effects of environmental parameters were also discussed. The results indicated that the CH4 partial pressure in the surface water ranged 0.64-4.43Pa, with an average of (1.69±0.94)Pa. The CO2 partial pressure varied from 49.90 to 868.91Pa, with the average of (328.48±251.63)Pa. The pCO2 and pCH4 had a strong negative correlation (r=-0.618,P<0.01). During the period of monitoring, the pCO2 and pCH4 in surface water were significantly correlated with pH, DO, chlorophyll a, TP, surface water temperature and water level. Compared with pCH4, pCO2 was more closely correlated with various environmental factors. |
| |
| Keywords: | dissolved gas partial pressure environmental factors the Three Gorges Reservoir Xiangxi River Bay |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
