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Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau

Although alpine meadows of Tibet are expected to be strongly affected by climatic warming, it remains unclear how soil organic C (SOC), total N (TN), ammonium N (NH(4) (+)-N) , nitrate N (NO(3) (+)-N), and dissolved organic C (DOC) and N (DON) respond to warming. This study aims to investigate the r...

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Autores principales: Yu, Cheng-Qun, Shen, Zhen-Xi, Zhang, Xian-Zhou, Sun, Wei, Fu, Gang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4055494/
https://www.ncbi.nlm.nih.gov/pubmed/24977179
http://dx.doi.org/10.1155/2014/152576
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author Yu, Cheng-Qun
Shen, Zhen-Xi
Zhang, Xian-Zhou
Sun, Wei
Fu, Gang
author_facet Yu, Cheng-Qun
Shen, Zhen-Xi
Zhang, Xian-Zhou
Sun, Wei
Fu, Gang
author_sort Yu, Cheng-Qun
collection PubMed
description Although alpine meadows of Tibet are expected to be strongly affected by climatic warming, it remains unclear how soil organic C (SOC), total N (TN), ammonium N (NH(4) (+)-N) , nitrate N (NO(3) (+)-N), and dissolved organic C (DOC) and N (DON) respond to warming. This study aims to investigate the responses of these C and N pools to short-term experimental warming in an alpine meadow of Tibet. A warming experiment using open top chambers was conducted in an alpine meadow at three elevations (i.e., a low (4313 m), mid-(4513 m), and high (4693 m) elevation) in May 2010. Topsoil (0–20 cm depth) samples were collected in July–September 2011. Experimental warming increased soil temperature by ~1–1.4°C but decreased soil moisture by ~0.04 m(3) m(−3). Experimental warming had little effects on SOC, TN, DOC, and DON, which may be related to lower warming magnitude, the short period of warming treatment, and experimental warming-induced soil drying by decreasing soil microbial activity. Experimental warming decreased significantly inorganic N at the two lower elevations,but had negligible effect at the high elevation. Our findings suggested that the effects of short-term experimental warming on SOC, TN and dissolved organic matter were insignificant, only affecting inorganic forms.
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spelling pubmed-40554942014-06-29 Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau Yu, Cheng-Qun Shen, Zhen-Xi Zhang, Xian-Zhou Sun, Wei Fu, Gang ScientificWorldJournal Research Article Although alpine meadows of Tibet are expected to be strongly affected by climatic warming, it remains unclear how soil organic C (SOC), total N (TN), ammonium N (NH(4) (+)-N) , nitrate N (NO(3) (+)-N), and dissolved organic C (DOC) and N (DON) respond to warming. This study aims to investigate the responses of these C and N pools to short-term experimental warming in an alpine meadow of Tibet. A warming experiment using open top chambers was conducted in an alpine meadow at three elevations (i.e., a low (4313 m), mid-(4513 m), and high (4693 m) elevation) in May 2010. Topsoil (0–20 cm depth) samples were collected in July–September 2011. Experimental warming increased soil temperature by ~1–1.4°C but decreased soil moisture by ~0.04 m(3) m(−3). Experimental warming had little effects on SOC, TN, DOC, and DON, which may be related to lower warming magnitude, the short period of warming treatment, and experimental warming-induced soil drying by decreasing soil microbial activity. Experimental warming decreased significantly inorganic N at the two lower elevations,but had negligible effect at the high elevation. Our findings suggested that the effects of short-term experimental warming on SOC, TN and dissolved organic matter were insignificant, only affecting inorganic forms. Hindawi Publishing Corporation 2014 2014-05-22 /pmc/articles/PMC4055494/ /pubmed/24977179 http://dx.doi.org/10.1155/2014/152576 Text en Copyright © 2014 Cheng-Qun Yu et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Yu, Cheng-Qun
Shen, Zhen-Xi
Zhang, Xian-Zhou
Sun, Wei
Fu, Gang
Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau
title Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau
title_full Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau
title_fullStr Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau
title_full_unstemmed Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau
title_short Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau
title_sort response of soil c and n, dissolved organic c and n, and inorganic n to short-term experimental warming in an alpine meadow on the tibetan plateau
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4055494/
https://www.ncbi.nlm.nih.gov/pubmed/24977179
http://dx.doi.org/10.1155/2014/152576
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