川西亚高山岷江冷杉幼苗生物量积累与分配的影响因子

陶琼, 缪宁, 岳喜明, 罗建琼, 薛盼盼, 王晖

Influencing factors of biomass accumulation and allocation of Abies fargesii var. faxoniana seedlings in the subalpine region of western Sichuan, China

TAO Qiong, MIAO Ning, YUE Xi-Ming, LUO Jian-Qiong, XUE Pan-Pan, WANG Hui

图5 岷江冷杉幼苗生物量与各生境因子的冗余分析(RDA) (A)和单个因子独立贡献率(B)。该模型在α = 0.001水平上显著。AL, 海拔; AMI, 平均年生物量增量; AS, 坡向; CC, 冠层盖度; FC, 箭竹盖度; FH, 箭竹高度; HC, 草本盖度; HH, 草本高度; LC, 凋落物盖度; LMF, 叶生物量分配比例; LT, 凋落物厚度; MC, 苔藓盖度; MT, 苔藓厚度; RMF, 根生物量分配比例; SC, 灌木盖度; SH, 灌木高度; SMF, 茎生物量分配比例; SU, 基质类型。log, 倒木; rock, 岩石; soil, 土壤; stump, 树桩。N, 北坡; NE, 东北坡; NW, 西北坡; W, 西坡。

Fig. 5 Redundancy analysis (RDA) diagram of all factors and biomass of Abies fargesii var. faxoniana seedlings (A) and the relative importance of individual factors (B). The model was significant at the α = 0.001 level. AL, altitude; AMI, annual biomass increment; AS, aspect slope; CC, canopy coverage; FC, Fargesia coverage; FH, Fargesia height; HC, herbage overage; HH, herbage height; LC, litter coverage; LMF, leaf biomass fraction; LT, litter thickness; MC, moss coverage; MT, moss thickness; RMF, root biomass fraction; SC, shrub coverage; SH, shrub height; SMF, stem biomass fraction; SU, substrate type. N, north slope aspect; NE, northeast slope aspect; NW, northwest slope aspect; W, west slope aspect.