水布垭水库水气界面二氧化碳交换规律研究  

Research on exchange law of CO2 at water-air interface of Shuibuya Reservoir

作　　者：赵登忠[1] 谭德宝[1] 汪朝辉[1] 李喆[1] 

机构地区：[1]长江科学院空间信息技术应用研究所,湖北武汉430010

出　　处：《人民长江》2012年第8期65-70,共6页Yangtze River

基　　金：水利部公益性科研院所基本科研业务费项目(CKSF2010008);科技部国家国际合作专项项目(2012DFR70760)

摘　　要：为了分析水库温室气体源汇变化的时空分布特征,以清江流域水布垭水库为研究对象,在2010年5月到2011年4月之间开展了6次水气界面二氧化碳交换通量的原位观测试验,获取了水库坝前、上游和支流库湾等重要区域二氧化碳交换通量及其影响因子的基础数据。对实测资料的分析表明,水布垭水库水气界面二氧化碳交换通量时空差异性较大,在排放状态下,交换通量从上游到坝前逐渐升高,在吸收状态下逐渐降低,夏季交换通量较低,气温低时较高;二氧化碳交换通量时空分布受到气温、溶解氧、叶绿素以及水体碳含量等因素的影响。In order to analyze the spatial-temporal sources and convergence distribution law of greenhouse air in reservoir,taking Shuibuya Reservoir on the Qingjiang River as a research object,6 times＇ observation on CO2 exchange flux were made from May,2010 to April,2011,and the CO2 exchange flux at important location at the dam,upstream and tributaries as well as influence factors were obtained.The analysis on the measured data shows that the spatial and temporal distribution of CO2 exchange flux of Shuibuya Reservoir differs in large extent,under emission state,the exchange flux increases from upstream to the dam and decrease under absorption state;the exchange flux is low in summer and high in low temperature;the spatial-temporal distribution of CO2 exchange flux is influenced by the factors of air temperature,dissolved oxygen,chlorophyll-a,C-content in water body etc.

关 键 词：水气界面 水库温室气体 二氧化碳通量 时空分布规律 水布垭水库 

分 类 号：X524[环境科学与工程—环境工程]