湖南东部植被恢复对土壤有机碳矿化的影响

辜翔,张仕吉,刘兆丹,李雷达,陈金磊,王留芳,方晰

Effects of vegetation restoration on soil organic carbon mineralization in the east of Hunan, China

GU Xiang,ZHANG Shi-Ji,LIU Zhao-Dan,LI Lei-Da,CHEN Jin-Lei,WANG Liu-Fang,FANG Xi

表6 植被因子和土壤因子主成分载荷矩阵、特征值及贡献率

Table 6 The principle component loading matrix, eigenvalue and contribution rate for vegetation and soil factors

因子 Factor 主成分 Component 因子 Factor 主成分 Component 1 2 3 1 2 3 植物多样性指数 Species diversity index 0.639 -0.103 0.515 土壤有机碳含量 Soil organic carbon concentration 0.947 -0.142 -0.084 地上部分生物量 Aboveground biomass 0.883 -0.005 -0.410 土壤全氮含量 Soil total nitrogen concentration 0.951 -0.158 0.043 根系生物量 Root biomass 0.951 0.003 -0.212 土壤全磷含量 Soil total phosphorus concentration 0.536 -0.823 -0.064 凋落物层N含量 Nitrogen concentration in litter layer 0.763 0.320 0.094 土壤碳磷比 Soil C:P 0.697 0.675 -0.111 凋落物层P含量 Phosphorus concentration in litter layer 0.651 -0.245 0.512 土壤氮磷比 Soil N:P 0.767 0.613 0.073 <0.002 mm黏粒百分含量 Soil clay percentage of <0.002 mm 0.711 -0.040 0.473 贡献率 Contribution rate (%) 61.511 14.966 10.687 土壤pH值 Soil pH value -0.782 0.261 -0.752 累积贡献率 Accumulative contribution rate (%) 61.511 76.477 87.165