In orden to explore the differences in soil carbon stability between coniferous-leaved forests and broad-leaved forests in Xiaoxing'an Mountains.This study investigated and collected 0-20 cm soil samples from coniferous-leaved forests and broad-leaved forests in Liangshui Nature Reserve,Xiaoxing'an Mts.,and measured soil organic carbon content(SOC),soil heterotrophic respiration rate(Rs),temperature sensitivity(Q10),humidity sensitivity(Hs),and soil physicochemical properties.The soil organic carbon content in broad-leaved forests was significantly higher than that in coniferous-leaved forests by 31.49％(P＜0.05),and there was no significant difference in soil heterotrophic respiration rate between coniferous-leaved forests and broad-leaved forests.The Q10 of soil temperature sensitivity in coniferous-leaved forests was significantly higher than that in broad-leaved forests by 16.82％(P＜0.05),but there was no significant difference in humidity sensitivity.Compared with coniferous-leaved forests,broad-leaved forests had higher soil organic carbon content and lower temperature sensitivity.Redundancy analysis indicated that soil bulk density had the greatest impact on carbon capture stability.
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