中文摘要：

以侧柏林地原状土壤为试验材料,利用人工气候箱（TPG-1260-TH）培养,研究不同土壤水分含量（最大田间持水量的20%、40%、60%、80%）对侧柏林地土壤CO2、N2O、CH4 3种温室气体排放通量的影响。结果表明：土壤水分含量为60%时,侧柏林地土壤CO2排放通量最大,平均排放通量为96.351 mg/m^2h;土壤水分含量为80%时,侧柏林地土壤N2O排放通量最大,平均排放通量为0.021 mg/m^2h;土壤水分含量为40%时,侧柏林地土壤CH4吸收通量最大,平均吸收通量为0.038 mg/m^2h。

英文摘要：

The undisturbed soil of Platycladus orientalis woodland was cultivated in artificial climate incubator（TPG-1260-TH） to study the influences of different soil moisture contents（20%,40%,60% and 80% of the maximum field capacity） on emission fluxes of three greenhouse gases（CO2,N2O and CH4） from Platycladus orientalis woodland soil.The results showed that when moisture content was 60%,the CO2 emission flux was the highest,and the average CO2 emission flux was 96.351 mg/m^2h;when moisture content was 80%,the N2O emission flux was the highest,and the average N2O emission flux was 0.021 mg/m^2h;when moisture content was 40%,the CH4 absorption flux was the highest,and the average CH4 absorption flux was 0.038 mg/m^2h.