Quantifying correlations among leaf traits and trait differences between plant functional types (PFTs) not only gives insight into selective pressures that have shaped vegetation evolution, but also plays a crucial role in predicting vegetation productivity shift with climate and land use change. The photosynthetic characteristics, leaf nitrogen content (N_ mass ), leaf mass per area (LMA), as well as their relationships in trees, shrubs and grasses growing in three sites, Ningshan County located in Qinling...
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