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High potential of s...
High potential of stable carbon sequestration in phytoliths of China's grasslands
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- Song, Zhaoliang (author)
- Tianjin Univ, China
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- Wu, Yuntao (author)
- Tianjin Univ, China
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- Yang, Yuanhe (author)
- Chinese Acad Sci, China
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- Zhang, Xiaodong (author)
- Tianjin Univ, China
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- Van Zwieten, Lukas (author)
- NSW Dept Primary Ind, Australia
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- Bolan, Nanthi (author)
- Univ Western Australia, Australia
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- Li, Zimin (author)
- Univ Catholique Louvain UCLouvain, Belgium
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- Liu, Hongyan (author)
- Peking Univ, China
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- Hao, Qian (author)
- Tianjin Univ, China
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- Yu, Changxun, 1983- (author)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM)
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- Sun, Xiaole (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,Stockholm University, Sweden
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- Song, Alin (author)
- Chinese Acad Agr Sci, China
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- Wang, Wenying (author)
- Peoples Govt Qinghai Prov, China;Beijing Normal Univ, China
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- Liu, Congqiang (author)
- Tianjin Univ, China
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- Wang, Hailong (author)
- Foshan Univ, China;Zhejiang A&F Univ, China
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(creator_code:org_t)
- 2022-01-31
- 2022
- English.
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In: Global Change Biology. - : John Wiley & Sons. - 1354-1013 .- 1365-2486. ; 28:8, s. 2736-2750
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Phytolith carbon (C) sequestration plays a key role in mitigating global climate change at a centennial to millennial time scale. However, previous estimates of phytolith-occluded carbon (PhytOC) storage and potential in China's grasslands have large uncertainties mainly due to multiple data sources. This contributes to the uncertainty in predicting long-term C sequestration in terrestrial ecosystems using Earth System Models. In this study, we carried out an intensive field investigation (79 sites, 237 soil profiles [0-100 cm], and 61 vegetation assessments) to quantify PhytOC storage in China's grasslands and to better explore the biogeographical patterns and influencing factors. Generally, PhytOC production flux and soil PhytOC density in both the Tibetan Plateau and the Inner Mongolian Plateau had a decreasing trend from the Northeast to the Southwest. The aboveground PhytOC production rate in China's grassland was 0.48 x 10(6) t CO2 a(-1), and the soil PhytOC storage was 383 x 10(6) t CO2. About 45% of soil PhytOC was stored in the deep soil layers (50-100 cm), highlighting the importance of deep soil layers for C stock assessments. Importantly, the Tibetan Plateau had the greatest contribution (more than 70%) to the PhytOC storage in China's grasslands. The results of multiple regression analysis indicated that altitude and soil texture significantly influenced the spatial distribution of soil PhytOC, explaining 78.1% of the total variation. Soil phytolith turnover time in China's grasslands was mainly controlled by climatic conditions, with the turnover time on the Tibetan Plateau being significantly longer than that on the Inner Mongolian Plateau. Our results offer more accurate estimates of the potential for phytolith C sequestration from ecological restoration projects in degraded grassland ecosystems. These estimates are essential to parameterizing and validating global C models.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- carbon sink
- China's grasslands
- ecological restoration
- phytolith-occluded carbon
- Tibetan Plateau
- turnover time
- Natural Science
- Naturvetenskap
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Song, Zhaoliang
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Wu, Yuntao
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Yang, Yuanhe
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Zhang, Xiaodong
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Van Zwieten, Luk ...
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Bolan, Nanthi
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Li, Zimin
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Liu, Hongyan
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Hao, Qian
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Yu, Changxun, 19 ...
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Sun, Xiaole
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Song, Alin
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Wang, Wenying
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Liu, Congqiang
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Wang, Hailong
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
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- AGRICULTURAL SCIENCES
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AGRICULTURAL SCI ...
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and Agriculture Fore ...
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and Soil Science
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Global Change Bi ...
- By the university
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Linnaeus University
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Stockholm University