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Position: Home > Articles > Analysis on Influencing Factors and Diurnal Variation of CO_2 Fluxes Across Water-air Interface of Nihe Reservoir in Autumn Forest Engineering 2011,27 (2) 19-22

泥河水库秋季水-气界面CO_2通量日变化特征及影响因子分析

作  者:
王钰祺;吕东珂
单  位:
东北石油大学
关键词:
泥河水库;水-气界面;CO2通量;日变化
摘  要:
利用静态箱法对泥河水库秋季水-气界面二氧化碳通量值进行连续24h观测,对其变化趋势及影响因素加以分析。结果表明:泥河水库24h均为大气的源,其碳通量均值为24.53mg·m-2.h-1,呈现出双峰值特点。全天源的极大值出现在22∶00为35.57mg·m-2.h-1,源的极小值出现在10∶00为12.57mg·m-2.h-1。在秋季影响水库水-气界面碳通量变化的主要因素是温度、风速、溶解有机碳(DOC)和碱度。秋季泥河水库CO2排放量不是很大,但仍是大气二氧化碳的碳源之一。
译  名:
Analysis on Influencing Factors and Diurnal Variation of CO_2 Fluxes Across Water-air Interface of Nihe Reservoir in Autumn
作  者:
Wang Yuqi,Lv Dongke(Northeast Petroleum University,Daqing,Heilongjiang Province 163000)
关键词:
Nihe reservoir;water-air interface;CO2 flux;diurnal variation
摘  要:
Static chamber method was used to observe diurnal variation of CO2 fluxes at the water-air interface of Nihe reservoir 24 hours continuously in autumn.And the changing together with the influencing factors was analyzed.Results show that Nihe reservoir is a total carbon source in twenty-four hours with mean flux value of 24.53(mg m-2 h-1),presenting a feature of double-peak.The maximum and minimum flux values are 35.57(mg m-2 h-1) at 22:00 and 12.57(mg m-2 h-1) at 10:00 respectively.The air temperature,vegetation,chlorophyll and alkalinity are the main factors that affect CO2 fluxes of Nihe reservoir in autumn.Therefore,it is concluded that CO2 emissions of Nihe reservoir in autumn is not that large,but is still one of the important CO2 sources.

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