2019
DOI: 10.1016/j.catena.2019.104236
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Composition and variation of soil δ15N stable isotope in natural ecosystems

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Cited by 24 publications
(16 citation statements)
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“…The decline in soil δ 15 N values with increasing water availability is in line with previous studies (Amundson et al., 2003; Chadwick et al., 2007; Craine et al., 2015; Peri et al., 2012; Shan et al., 2019; Vitousek, et al., 2019; Wu et al., 2019). This result is also consistent with mechanistic laboratory studies that demonstrate that increasing soil moisture may favor the accumulation of δ 14 N (Yun & Ro, 2014).…”
Section: Discussionsupporting
confidence: 90%
“…The decline in soil δ 15 N values with increasing water availability is in line with previous studies (Amundson et al., 2003; Chadwick et al., 2007; Craine et al., 2015; Peri et al., 2012; Shan et al., 2019; Vitousek, et al., 2019; Wu et al., 2019). This result is also consistent with mechanistic laboratory studies that demonstrate that increasing soil moisture may favor the accumulation of δ 14 N (Yun & Ro, 2014).…”
Section: Discussionsupporting
confidence: 90%
“…(2) As an indicator that integrates many processes affecting the N cycle, controls on soil δ 15 N are very complicated, including various climatic, edaphic and biological factors [29,32]. Consistently with a previous study on the Chinese Loess Plateau [58], edaphic factors such as SOC, N t and P t strongly influenced soil δ 15 N across our transect. Previous studies demonstrated that soil δ 15 N increased or decreased with N t contents [10,11], but we observed a significant positive logarithmic relationship between soil δ 15 N and N t along the transect.…”
Section: Discussionsupporting
confidence: 86%
“…Early on, sources of atmospheric N in Guiyang, one of regions in our study, were urban sewage and agricultural NH y , which was characterized by low δ 15 N (Liu et al, 2008; Qu et al, 2016). During 2006–2017, the dominant atmospheric N compounds and sources changed from 15 N‐depleted NH y (−15 ~ 0‰) to less depleted or 15 N‐enriched NO x (−5 ~ 5‰, Felix & Elliott, 2014; Heaton, 1990; Liu et al, 2008; Rivero‐Villar et al, 2018; Shan et al, 2019) in urban regions (Zhao et al, 2019), which might affect the δ 15 N in leaves. The change in the form of N in deposition was slow and occurred in the later period covered by our study (Yu et al, 2019; Zhao et al, 2019), allowing for decreases in foliar δ 15 N of trees in southern China over the past 90 years.…”
Section: Discussionmentioning
confidence: 99%