HH-N2O-III 湿地CO_2、CH_4和N_2O排放测定填充柱

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湿地CO_2、CH_4和N_2O排放测定填充柱
湿地CO_2、CH_4和N_2O排放测定填充柱 详细信息：

名称：填充柱
规格：3m*1/8
型号：HH-N2O-III
应用：甲烷，二氧化碳和一氧化二氮的测定

浩瀚色谱（山东）应用技术开发有限公司通过静态暗箱—气相色谱法研究了长江口崇明东滩四类典型湿地(围垦湿地、高潮滩、中潮滩和低潮滩)CO2、CH4和N2O排放特征及影响因素。结果表明,在生长季尺度下,CO2、CH4和N2O均以排放为主;在昼夜尺度下,CO2和CH4在夜间排放量大于白昼排放量,而N2O的排放高峰出现在下午;在潮水退去、潮滩暴露初期,CH4和N2O有大量排放,CO2正好相反。崇明东滩温室气体排放通量自岸向海有明显的梯度变化,总体趋势是越近岸通量值越大。观测与实验表明,温度、潮汐、土壤理化性质、植物和土地利用变化都对温室气体排放通量有明显的影响,其中滨海潮滩湿地环境因子潮汐以"淹没—暴露"光滩沉积物的方式控制温室气体的排放。

湿地CO_2、CH_4和N_2O排放测定填充柱  测试谱图：



Wetland CO_ 2、CH_ 4 and N_ Filled column for 2O emission measurement

Wetland CO_ 2、CH_ 4 and N_ Details of filling column for 2O emission determination:



Name: Filled column

Specification: 3m * 1/8

Model: HH-N2O-III

Application: Determination of methane, carbon dioxide and nitrous oxide



Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. has studied the characteristics and influencing factors of CO2, CH4 and N2O emissions from four typical wetlands (reclaimed wetlands, high tide beaches, middle tide beaches and low tide beaches) in Chongming East Beach of the Yangtze Estuary by static chamber gas chromatography. The results showed that CO2, CH4 and N2O were mainly emitted in the growth season scale; On the day and night scale, the emissions of CO2 and CH4 at night are greater than those at daytime, while the peak of N2O emissions occurs in the afternoon; At the beginning of tide receding and tidal flat exposure, CH4 and N2O are discharged in large quantities, while CO2 is just the opposite. The greenhouse gas emission flux of Chongming East Beach has obvious gradient change from shore to sea, and the overall trend is that the closer the shore is, the greater the flux value is. Observations and experiments show that temperature, tide, physical and chemical properties of soil, plant and land use change have obvious effects on greenhouse gas emission flux. Among them, tide, the unique environmental factor of coastal tidal flat wetland, controls greenhouse gas emission in the way of "submerging exposed" floodplain sediment.



Wetland CO_ 2、CH_ 4 and N_ Test spectrogram of filled column for determination of 2O emission: