小兴安岭不同沼泽CO2、CH4和N2O排放通量的相互关系研究  

Research on relationship among CO2,CH4 and N2O emission fluxes from different marshs in Xiaoxing’an Mountains

作　　者：石兰英[1] 牟长城[2] SHI Lan-ying;MOU Chang-cheng(College of History and Culture,Mudanjiang Teachers’College,Mudanjiang 157011,Heilongjiang,China;College of Forestry,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]牡丹江师范学院历史与文化学院,黑龙江牡丹江157011 [2]东北林业大学林业学院,哈尔滨150040

出　　处：《湖北农业科学》2019年第24期80-83,共4页Hubei Agricultural Sciences

基　　金：黑龙江省教育厅基本科研业务费项目（1353ZD015;1353MSYYB029）;牡丹江师范学院青年项目（QN2019009）;国家自然科学基金项目（31370461）

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CO2、CH4和N2O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N2O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,CH4与N2O具显著负相关外,CO2与CH4、CO2与N2O及CH4与N2O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。CO2,CH4 and N2O 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 N2O in shrub swamps in 2008. Excepted for CH4 and N2O were negatively correlated in the early growing season of Carex schmidtii marsh, there was a positively correlation between CO2 and CH4 emission fluxes, CO2 and N2O emission fluxes, and CH4 and N2O emission fluxes.But the level was different in various wetlands or seasons.

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 

分 类 号：X173[环境科学与工程—环境科学] X171.1