For example, with increasing elevation, [C] leaf of Oxytropis ochrocephala first increased and then decreased, while [N] leaf and [P] leaf of the same species showed a trend of general increase in the identified soil organic carbon (SOC), the ratio of SOC to soil total phosphorus (STP), and the mean annual temperature (MAT) as dominant factors (Cao et al., 2020 ).
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Response of leaf stoichiometry of <i>Potentilla anserina</i> to elevation in China's Qilian Mountains.
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The sentences
With increasing elevation, [N] leaf /[P] leaf showed an increasing trend, indicating that the higher the elevation, the more severe the restriction of P element to the growth of P. anserina .