Altitudinal variation in leaf nitrogen concentration on the eastern slope of Mount Gongga on the Tibetan Plateau, China.

PLoS One · 2012 · PMC3445534 · PMID 23028570

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an increasing trendno p-value reported

Discussion Körner (1989) reported that herbaceous plants displayed an increasing trend in leaf N mass with increasing altitude, but N mass in evergreen woody plants remained stable.

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