Assessing the influence of climate, soil fertility, and species identity on leaf trait relationships is crucial for understanding the adaptations of plants to their environment and for interpreting leaf trait relationships across spatial scales.
We survey grassland sites along transects across China to examine trade-offs between leaf persistence (leaf mass per area), leaf productivity (mass-based photosynthetic rate, N and P content, and photosynthetic N-use efficiency, PNUE) and other plant traits. Using general linear mixed models we asked to which extent these trade-offs are influenced by variation among sites within species (decomposed into variation due to climatic and soil variables) and variation among species within sites (decomposed into variation among taxonomic, functional, or phylogenetic groups). Results provide evidence for the fundamental nature of productivity–persistence tradeoffs in plants. The total covariance between leaf traits is explained by a combination of factors.
Prof. Dr. Bernhard Schmid (Collaborator)
Prof. Jingyun Fang (Project Leader), Peking University
Prof. Jin-Sheng He (Project Leader), Peking University