Effects of experimental N addition on plant diversity in an old-growth temperate forest.

diversity index interannual response nitrogen deposition seasonal response soil properties Fundamental Research Funds for Central Universities 2572017EA02 3.2 Seasonal response of the density and cover of functional groups to N addition The density and cover of herbs showed a decreasing tendency over time from spring to autumn in 2016, while others showed an initial increasing trend followed by a decreasing trend (Figure 5 a–d).

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