| 三峡澎溪河水域CO2与CH4年总通量估算 |
| |
| 引用本文： | 李哲,白镭,蒋滔,郭劲松,刘静.三峡澎溪河水域CO2与CH4年总通量估算[J].水科学进展,2013,24(4):551-559. |
| |
| 作者姓名： | 李哲 白镭 蒋滔 郭劲松 刘静 |
| |
| 作者单位： | 1.重庆大学城市建设与环境工程学院, 重庆 400044; |
| |
| 基金项目： | 国家自然科学基金资助项目，The study is financially supported by the National Natural Science Foundation of China |
| |
| 摘 要： | 以2010年6月~2011年5月三峡澎溪河回水区CO2与CH4通量监测数据为基础,参考澎溪河高阳平湖水域全年4次的24 h昼夜连续跟踪观测结果,对每月各采样点的日通量值进行估算。提出了水下地形划分法和环境因素控制法,将各采样点日通量数据外延至整个回水区水域,并估算了澎溪河回水区水域CO2与CH4年总通量值。研究期间,澎溪河回水区全年各采样点CO2通量均值为(3.05±0.46)mmol/(m2·h);CH4为(0.050 1±0.009 6)mmol/(m2·h)。以水下地形法为基础,该水域全年CO2和CH4总通量分别为40 060.5 t和540.9 t;以环境因素控制法为基础,全年CO2与CH4总通量分别为39 073.0 t和467.2 t。以环境要素控制法为参考,该水域CO2全年平均释放强度为43.26 mmol/(m2·d),在全球水库数据序列中处于中等略偏高水平,CH4全年平均释放强度为1.42 mmol/(m2·d),在全球水库序列中处于中等水平。
|
| 关 键 词： | 三峡水库 澎溪河 CO2 CH4 年总通量 |
| 收稿时间： | 2012-10-15 |
Estimation on annual water-air CO2 and CH4 fluxes in Pengxi River,Three Gorges Reservoir |
| |
| LI Zhe,BAI Lei,JIANG Tao,GUO Jingsong,LIU Jing.Estimation on annual water-air CO2 and CH4 fluxes in Pengxi River,Three Gorges Reservoir[J].Advances in Water Science,2013,24(4):551-559. |
| |
| Authors: | LI Zhe BAI Lei JIANG Tao GUO Jingsong LIU Jing |
| |
| Institution: | 1.College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400044, China;2.Sichuan Provincial Architecture Design Institute, Chengdu 610017, China;3.Agricultural Engineering Institute, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China |
| |
| Abstract: | Estimation on annual greenhouse gas fluxes in reservoirs is crucial for the assessment of reservoir greenhouse gas effects. A 1a research was conducted in Pengxi River backwater area, Three Gorges Reservoir to estimate annual water-air CO2 and CH4 fluxes. Taken the 24h continuous monitoring data in Gaoyang Lake as reference, 2 methods, i.e. underwater topographical method and environmental controlling factor method, were carried out to estimate the annual fluxes based on monthly field data. The field sampling results showed that mean value of the CO2 fluxes among the sampling spot was (3.05±0.46) mmol/(m2· h), while that of CH4 was (0.050 1±0.009 6) mmol/(m2·h). The annual estimation of CO2 and CH4 fluxes in the Pengxi River backwater area based on underwater topographical method was 40 060.5 t and 540.9 t respectively. With the environmental controlling factor method, the annual estimation of CO2 and CH4 fluxes was 39 073.0 t and 467.2 t respectively. Taken the annual estimation result from environmental controlling factor method as reference, the weighted average CO2 fluxes during the study was 43.26 mmol/(m2·d), while that of CH4 was 1.42 mmol/(m2·d). Generally, both of the CO2 and CH4 weight average fluxes were shown to be in the mid-range in the global data sets, although that of CO2 was showed in slightly higher bound. |
| |
| Keywords: | Three Gorges Reservoir Pengxi River CO2 CH4 estimation of annual fluxes |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
| 点击此处可从《水科学进展》下载免费的PDF全文 |
|
