采用Licor-6400-09的土壤呼吸测量系统对北京市区3种不同覆盖类型地表(全硬地表、半透砖地表、草坪覆盖地表)的土壤呼吸速率及其影响因子进行了测定和分析。结果表明:(1)不同地表覆盖类型的土壤呼吸速率年均值分别为7.928μmol·m-2·s-1(全硬地表),5.592μmol·m-2·s-1(部分硬化地表)、2.625μmol·m-2·s-1(草坪覆盖地表);土壤呼吸日均值最高均出现在夏季(14.785,10.296,5.143μmol·m-2·s-1),最低为冬季(0.490,0.319,0.239μmol·m-2·s-1);(2)3种地表类型的土壤呼吸速率有显著差异(P<0.05),大小排序为:草坪覆盖地表<部分硬化地表<全硬地表;(3)3种地表类型土壤呼吸速率均与土壤温度呈显著的指数相关,Q10值排序为:草坪覆盖地表<部分硬化地表<全硬地表;(4)土壤含水率和土壤电导率与土壤呼吸均有一定的相关性,但关系较为复杂,有待于进一步研究。 The soil respiration rate of Lichen-6400-09 and its influencing factors were measured and analyzed using three different cover types (full-hard, semi-translucent and turf-covered) in urban Beijing. The results showed that: (1) The average annual soil respiration rate of different land cover types was 7.928μmol · m-2 · s-1 (all-hard surface), 5.592μmol · m-2 · s-1 2.625μmol · m-2 · s-1 (lawn-covered surface). The highest daily average soil respiration occurred in summer (14.785,10.296,5.143μmol · m-2 · s-1) and lowest in winter (0.490,0.319, 0.239μmol · m-2 · s-1). (2) There were significant differences in soil respiration rates among the three land cover types (P <0.05) The soil respiration rates of the three types of land cover were significantly correlated with the soil temperature. The Q10 values ​​were ranked as follows: grass covered land