Fig. 8

Relationships between plant stoichiometry characteristics and soil, climate in the Qilian Mountains. (Note: The width of the ellipse indicates the degree of influence, blue indicates negative correlation, red indicates positive correlation, C = carbon concentration of Qinghai spruce, N = nitrogen concentration of Qinghai spruce, P = phosphorus concentration of Qinghai spruce, SOC = soil organic carbon, TN = soil total nitrogen, TP = soil total phosphorus, pH = soil pH, SBD = soil bulk density, MAT = mean annual temperature, MAP = mean annual precipitation)