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https://doi.org/10.5194/bgd-7-1-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bgd-7-1-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
05 Jan 2010
Status: this preprint was under review for the journal BG but the revision was not accepted.
Vertical patterns of soil carbon, nitrogen and carbon: nitrogen stoichiometry in Tibetan grasslands
Abstract. Vertical patterns of soil organic carbon (SOC), total nitrogen (TN) and C:N stoichiometry are crucial for understanding biogeochemical cycles in high-altitude ecosystems, but remain poorly understood. In this study, we investigated vertical distributions of SOC and TN as well as their stoichiometric relationships in alpine grasslands on the Tibetan Plateau using data of 405 profiles surveyed from 135 sites across the plateau during 2001–2004. Our results showed that, both SOC and TN in alpine grasslands decreased with soil depth, while C:N ratio did not exhibit significant change along soil profile. The associations of SOC and TN content (amount per area) with environmental factors diminished with soil depth. Soil carbon content was nearly proportional to nitrogen content with a slope of 1.04 across various various grassland types. The slope did not differ significantly between alpine steppe and alpine meadow or between alpine grasslands and global ecosystems, and also did not reveal significant differences among various soil depth intervals, suggesting that soil carbon-nitrogen coupling is irrespective of ecosystem types and soil depths.
How to cite. Yang, Y. H., Fang, J. Y., Guo, D. L., Ji, C. J., and Ma, W. H.: Vertical patterns of soil carbon, nitrogen and carbon: nitrogen stoichiometry in Tibetan grasslands, Biogeosciences Discuss., 7, 1–24, https://doi.org/10.5194/bgd-7-1-2010, 2010.
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC C18: 'Vertical patterns of soil carbon, nitrogen and carbon: nitrogen stoichiometry in Tibetan grasslands', Anonymous Referee #1, 02 Feb 2010
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AC C427: 'Reply to Review #1', Yuanhe Yang, 04 Apr 2010
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AC C427: 'Reply to Review #1', Yuanhe Yang, 04 Apr 2010
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RC C43: 'Review-notes: article Yang et al. 2010', Anonymous Referee #2, 12 Feb 2010
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AC C429: 'Responses to Reviewer 2', Yuanhe Yang, 04 Apr 2010
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AC C429: 'Responses to Reviewer 2', Yuanhe Yang, 04 Apr 2010
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
- Printer-friendly version
- Supplement
-
RC C18: 'Vertical patterns of soil carbon, nitrogen and carbon: nitrogen stoichiometry in Tibetan grasslands', Anonymous Referee #1, 02 Feb 2010
-
AC C427: 'Reply to Review #1', Yuanhe Yang, 04 Apr 2010
-
AC C427: 'Reply to Review #1', Yuanhe Yang, 04 Apr 2010
-
RC C43: 'Review-notes: article Yang et al. 2010', Anonymous Referee #2, 12 Feb 2010
-
AC C429: 'Responses to Reviewer 2', Yuanhe Yang, 04 Apr 2010
-
AC C429: 'Responses to Reviewer 2', Yuanhe Yang, 04 Apr 2010
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Y. H. Yang
Department of Ecology, and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
J. Y. Fang
Department of Ecology, and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
D. L. Guo
Department of Ecology, and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
C. J. Ji
Department of Ecology, and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
W. H. Ma
Department of Ecology, and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China