Fig. 3From: The relative contributions of climate, soil, diversity and interactions to leaf trait variation and spectrum of invasive Solidago canadensisThe relationship between leaf production index and leaf stress-tolerance index (a) and the relative contributions of 16 environmental factors to leaf production-tolerance trade-off (b). The positive/negative direction of each effect is indicated by its positive/negative value. ***P < 0.001; **P < 0.01; *P < 0.05Back to article page