大兴安岭呼玛河流域多年冻土区森林土壤有机碳和有效氮分布特征及影响因素
郑智超, 满浩然, 臧淑英, 刘超, 董星丰

Distribution characteristics and influencing factors of forest soil organic carbon and available nitrogen in permafrost regions of Huma River basin, Greater Hinggan Mountains
Zhichao ZHENG, Haoran MAN, Shuying ZANG, Chao LIU, Xingfeng DONG
表2 不同类型冻土区土壤有机碳和有效氮统计特征(平均值±标准
Table 2 Statistical characteristics of soil organic carbon and available nitrogen in different permafrost zone types (average?±?standard deviation)
冻土区类型变量土层深度/cm
0~2020~4040~6060~8080~100
不连续多年冻土区有机碳SOC/(g·kg-199.67±13.14Aa73.47±9.28Ab53.94±7.40Ac42.03±4.01Ad34.30±3.67Ad
铵态氮NH4+-N/(mg·kg-111.16±1.91Aa9.09±2.03Aab8.16±1.64Abc7.16±0.84Abc6.45±1.31Ad
硝态氮NO3--N/(mg·kg-12.91±1.20Aa2.09±0.66Aab1.72±0.35Ab1.28±0.46Abc0.64±0.24Ad
零星多年冻土区有机碳SOC/(g·kg-175.10±7.36Ba56.89±11.01Bb44.32±5.93Bc36.97±5.06ABcd32.23±2.82Ad
铵态氮NH4+-N/(mg·kg-114.52±2.54Ba10.22±1.64Ab9.07±1.64Ab8.87±1.83Ab7.90±0.96Bb
硝态氮NO3--N/(mg·kg-11.54±0.57Ba1.28±0.51Bab1.10±0.35Bab0.99±0.40Aab0.63±0.44Ab
岛状多年冻土区有机碳SOC/(g·kg-167.98±3.01Ba52.17±5.75Bb44.94±6.07Bc34.03±6.60Bd28.85±4.84Ad
铵态氮NH4+-N/(mg·kg-110.51±2.79Aa9.89±3.13Aab7.88±2.24Aab7.45±1.19Ab7.32±0.71ABb
硝态氮NO3--N/(mg·kg-11.44±0.27Ba1.38±0.40Ba0.98±0.33Bb0.81±0.20Abc0.59±0.29Ac