Foliar δ<sup>13</sup>C Showed No Altitudinal Trend in an Arid Region and Atmospheric Pressure Exerted a Negative Effect on Plant δ<sup>13</sup>C.

Front Plant Sci · 2017 · PMC5495824 · PMID 28725227

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extremely significantno p-value reported

It is well known that there is always an extremely significant relationship between air pressure and altitude (Supplementary Figure 2 ), although the change of air pressure is a function of temperature.

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