A - Papers appearing in refereed journals
Shan, Y., Huang, M., Suo, L., Zhao, X. and Wu, L. 2019. Composition and variation of soil δ15N stable isotope in natural ecosystems. Catena. 183, p. 104236. https://doi.org/10.1016/j.catena.2019.104236
Authors | Shan, Y., Huang, M., Suo, L., Zhao, X. and Wu, L. |
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Abstract | The natural abundance of δ15N in soils is a simple tool for understanding ecosystem nitrogen cycling. However, the main drivers for soil δ15N in different natural land use types are not clear enough. To investigate the main drivers for soil δ15N in different land uses, we measured δ15N in the top 10 cm of the soil along a precipitation gradient with various land uses on the Loess Plateau of China, which covers a total area of 620,000 km2 and is one of the most erodible area in the world, to determine effects of climatic, soil and vegetation factors on soil δ15N and the relationships between them using the partial least squares regression (PLSR) method. Soil δ15N ranged from 1‰ to 9‰ on the Loess Plateau with an average of 5.8‰ in forest lands, 5.6‰ in shrub lands, and 4.8‰ in grasslands. Calculated variable influence on projection by PLSR showed that both soil properties (including soil organic carbon content, total nitrogen content and soil texture) and mean annual precipitation influenced soil δ15N strongly. In addition, site elevation also influenced soil δ15N strongly in forest lands. The dominant controls of soil δ15N varied among three land use types on the Chinese Loess Plateau, and PLSR would be a reasonable tool to predict soil δ15N. |
Keywords | Soil properties; Partial least squares regression; Land use; Regional scale |
Year of Publication | 2019 |
Journal | Catena |
Journal citation | 183, p. 104236 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.catena.2019.104236 |
Open access | Published as non-open access |
Funder | Natural Environment Research Council |
National Natural Science Foundation of China | |
Funder project or code | Modelling and managing critical zone relationships between soil, water and ecosystem processes across the Loess Plateau |
41571130082 | |
Output status | Published |
Publication dates | |
Online | 27 Sep 2019 |
Publication process dates | |
Accepted | 20 Aug 2019 |
Publisher | Elsevier Science Bv |
ISSN | 0341-8162 |
Permalink - https://repository.rothamsted.ac.uk/item/96x12/composition-and-variation-of-soil-15n-stable-isotope-in-natural-ecosystems
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