Fig. 5 Redundancy analysis (RDA) of leaf stoichiometry and RDA
of the soils and plants.
A: Variations in soil and leaf stoichiometry andP. kansuensis coverage.
Richness was partitioned among two explanatory variable groups (soil and
plants) using a partial regression analysis with an RDA. B:
Variation-partitioning analysis produced four fractions: single effect
of soil, single effect of plants, joint effects of soil and plants, and
unexplained variation. ΔSW, The value of soil water content from
treatment minus control; ΔSN, The value of soil nitrogen content from
treatment minus control; ΔSP, The value of soil phosphorus content from
treatment minus control; ΔSK, The value of soil potassium content from
treatment minus control; ΔRichness, The value of richness from treatment
minus control; LN, Leaf nitrogen content; LP, Leaf phosphorus content;
LK, Leaf potassium content; LN:LP, Ratio of leaf nitrogen content to
leaf phosphorus content; LN:LK, Ratio of leaf nitrogen content to leaf
potassium content; LP:LK, Ratio of leaf phosphorus content to leaf
potassium content; CP, Coverage of P. kansuensis .