降雨变化对高寒草甸不同植物功能群凋落物质量及其分解的影响

杨德春, 胡雷, 宋小艳, 王长庭

Effects of changing precipitation on litter quality and decomposition of different plant functional groups in an alpine meadow

YANG De-Chun, HU Lei, SONG Xiao-Yan, WANG Chang-Ting

表2 凋落物类型和降雨量对凋落物初始化学性质的双因素方差分析

Table 2 Two-way ANOVA between initial litter properties and litter types and precipitation treatments (mean ± SE, n = 3)

凋落物化学性质 Litter property L Pr L × Pr F p F p F p 碳含量 Carbon (C) content 6.758 0.001 1.391 0.255 1.444 0.187 氮含量 Nitrogen (N) content 20.094 <0.001 6.986 <0.001 2.287 0.025 磷含量 Phosphorus (P) content 6.708 0.001 19.042 <0.001 1.767 0.088 木质素含量 Lignin content 86.889 <0.001 6.828 <0.001 3.747 0.001 纤维素含量 Cellulose content 289.576 <0.001 1.483 0.225 3.227 0.003 半纤维素含量 Hemicellulose content 575.796 <0.001 1.922 0.126 2.282 0.025 碳氮比 C:N 23.248 <0.001 6.978 <0.001 3.426 0.002 碳磷比 C:P 28.676 <0.001 38.313 <0.001 5.335 <0.001 氮磷比 N:P 0.372 0.773 25.016 <0.001 1.391 0.210 木质素氮比 Lignin:N 6.648 0.001 1.119 0.361 1.604 0.130