The Effects of Plant-Soil-Enzyme Interactions on Plant Composition, Biomass and Diversity of Alpine Meadows in the Qinghai-Tibetan Plateau

Figure 1

Soil enzyme activities (per gram dry weight) from samples collected at different depths in the four meadow communities: (a) urease (mg NH₄-N/g); (B) protease (mg Tyr/g); (c) alkali phosphatase (mg phenol/g); (d) invertase (mg glucose/g). Bars indicate standard deviation (𝑛=6). At the same depth for different communities, values with the same letters are not significantly different (𝑃≤.05). Kobresia humilis meadow = KHM; Kobresia pygmaea meadow = KPM; Kobresia tibetica swamp meadow = KTS; Potentilla fruticosa scrub = PFS.

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