Aridity threshold for alpine soil nitrogen isotope signature and ecosystem nitrogen cycling
Jinhua Mao,
Junxiao Pan,
Lei Song
et al.
Abstract:Determination of tipping points in nitrogen (N) isotope (δ15N) natural abundance, especially soil δ15N, with increasing aridity, is critical for estimating N‐cycling dynamics and N limitation in terrestrial ecosystems. However, whether there are linear or nonlinear responses of soil δ15N to increases in aridity and if these responses correspond well with soil N cycling remains largely unknown. In this study, we investigated soil δ15N and soil N‐cycling characteristics in both topsoil and subsoil layers along a… Show more
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