Abstract: The functional traits of plant leaves reflect the responses of plants to environment and the strategy of resource acquisition and utilization. In this study, we analyzed the changes of leaf functional traits of Cyclobalanopsis glauca with altitude in Wuyishan Nature Reserve. The results showed that: (1) With increasing altitude, nitrogen (N) content, phosphorus (P) content, leaf area (LA), specific leaf area (SLA), and leaf mass (LM) all initially increased and then decreased. All the leaf functional traits at altitude of 1600 m were significantly higher than those at altitude of 1400 m and 1800 m; (2) The variation degree of leaf functional traits of C. glauca at 1400 m was significantly higher than those at 1600 m and 1800 m. In addition, the variation coefficients of LA and LM were higher than 25% at 1400 m, while those of other functional traits (C, N, P, C/N ratio, C/P ratio, N/P ratio, SLA) at each altitude were below 9%; (3) Leaf functional traits of C. glauca showed a conservation strategy at the altitude of 1400 m and 1800 m, while those showed a acquisition strategy at the 1600 m altitude. Therefore, there are altitudinal variations of leaf functional traits of C. glauca, resource acquisition and utilization strategies.

Key words: altitude, leaf, functional trait, resource acquisition strategy, Cyclobalanopsis glauca.