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小兴安岭不同沼泽CO_2、CH_4和N_2O排放通量的相互关系研究

作  者:
石兰英;牟长城
单  位:
东北林业大学林业学院;牡丹江师范学院历史与文化学院
关键词:
CO2排放通量;CH4排放通量;N2O排放通量;修氏苔草(Carex schmidtii)沼泽;油桦(Betula ovalifolia)-修氏苔草灌木沼泽;小兴安岭
摘  要:
利用静态箱-气相色谱法连续两个生长季(2007—2008年)对小兴安岭典型修氏苔草(Carex schmidtii)沼泽和油桦(Betula ovalifolia)-修氏苔草灌木沼泽CO_2、CH_4和N_2O的排放通量进行野外原位观测。结果表明,除2008年灌木沼泽为N_2O的弱汇外,其他均为温室气体的排放源。除苔草沼泽生长季初期,CH_4与N_2O具显著负相关外,CO_2与CH_4、CO_2与N_2O及CH_4与N_2O均呈正相关,但显著性水平视不同湿地类型以及不同季节而定。
译  名:
Research on relationship among CO_2,CH_4 and N_2O emission fluxes from different marshs in Xiaoxing'an Mountains
作  者:
SHI Lan-ying;MOU Chang-cheng;College of History and Culture,Mudanjiang Teachers' College;College of Forestry,Northeast Forestry University;
关键词:
CO2 fluxes;;CH4 fluxes;;N2O fluxes;;Carex schmidtii marshes;;Betula ovalifolia-Carex schmidtii shrub swamp;;Xiaoxing'an Mountains
摘  要:
CO_2,CH_4 and N_2O flux es were measured using the technique of closed opaque chamber and gas chromatography system. The experiment was carried out during 2007—2008 growing seasons in field of Carex schmidtii marsh and Betulaovalifolia-Carex schmidtii shrub swamp ecosystems in Xiaoxing'an Mountains. The results showed that the two wetlands both were emission sources of greenhouse gases during growing seasons, except for the weak sink of N_2O in shrub swamps in 2008. Excepted for CH_4 and N_2O were negatively correlated in the early growing season of Carex schmidtii marsh, there was a positively correlation between CO_2 and CH_4 emission fluxes, CO_2 and N_2O emission fluxes, and CH_4 and N_2O emission fluxes.But the level was different in various wetlands or seasons.

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