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Vertical Patterns of Soil Carbon, Nitrogen and Carbon: Nitrogen Stoichiometry in Tibetan Grasslands : Volume 7, Issue 1 (05/01/2010)

By Yang, Y. H.

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Book Id: WPLBN0004005410
Format Type: PDF Article :
File Size: Pages 24
Reproduction Date: 2015

Title: Vertical Patterns of Soil Carbon, Nitrogen and Carbon: Nitrogen Stoichiometry in Tibetan Grasslands : Volume 7, Issue 1 (05/01/2010)  
Author: Yang, Y. H.
Volume: Vol. 7, Issue 1
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Guo, D. L., Fang, J. Y., Ji, C. J., Yang, Y. H., & Ma, W. H. (2010). Vertical Patterns of Soil Carbon, Nitrogen and Carbon: Nitrogen Stoichiometry in Tibetan Grasslands : Volume 7, Issue 1 (05/01/2010). Retrieved from http://www.ebooklibrary.org/


Description
Description: 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. 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.

Summary
Vertical patterns of soil carbon, nitrogen and carbon: nitrogen stoichiometry in Tibetan grasslands

Excerpt
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