围封对内蒙古典型草原与荒漠草原植被-土壤系统碳密度的影响

闫宝龙,王忠武,屈志强,王静,韩国栋

Effects of enclosure on carbon density of plant-soil system in typical steppe and desert steppe in Nei Mongol, China

Bao-Long YAN,Zhong-Wu WANG,Zhi-Qiang QU,Jing WANG,Guo-Dong HAN

表2 放牧与土壤深度的交互作用对地下碳密度的影响

Table 2 The effects of interaction between grazing and soil depth on belowground carbon density

影响因子 Impact factor 典型草原 Typical steppe 荒漠草原 Desert steppe 地下生物量碳密度 Belowground biomass carbon density (g·m-2) 土壤碳密度 Soil carbon density (kg·m-2) 地下生物量碳密度 Belowground biomass carbon density (g·cm-3) 土壤碳密度 Soil carbon density (kg·m-2) F p F p F p F p 放牧利用 Grazing 164.48 <0.000 1 126.39 <0.000 1 33.82 <0.000 1 0.04 0.832 7 土层深度 Soil depth 40.31 <0.000 1 6.88 <0.000 1 0.20 0.655 6 9.86 <0.000 1 放牧利用×土层深度 Grazing × Soil depth 22.41 <0.000 1 1.95 0.086 1 1.05 0.393 4 0.59 0.711 2