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Storage, patterns a...
Storage, patterns and influencing factors for soil organic carbon in coastal wetlands of China
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- Xia, Shaopan (författare)
- Nanjing Agr Univ, China;Tianjin Univ, China
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- Song, Zhaoliang (författare)
- Tianjin Univ, China;Haihe Lab Sustainable Chem Transformat, China
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- Van Zwieten, Lukas (författare)
- Wollongbar Primary Ind Inst, Australia
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- Guo, Laodong (författare)
- Univ Wisconsin, USA
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- Yu, Changxun, 1983- (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM)
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- Wang, Weiqi (författare)
- Fujian Normal Univ, China
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- Li, Qiang (författare)
- Tianjin Univ, China
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- Hartley, Iain P. (författare)
- Univ Exeter, UK
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- Yang, Yuanhe (författare)
- Chinese Acad Sci, China
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- Liu, Hongyan (författare)
- Peking Univ, China
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- Wang, Yidong (författare)
- Tianjin Normal Univ, China
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- Ran, Xiangbin (författare)
- Minist Nat Resources, China
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- Liu, Cong-Qiang (författare)
- Tianjin Univ, China;Haihe Lab Sustainable Chem Transformat, China
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- Wang, Hailong (författare)
- Foshan Univ, China;Zhejiang A&F Univ, China
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(creator_code:org_t)
- 2022-07-20
- 2022
- Engelska.
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Ingår i: Global Change Biology. - : John Wiley & Sons. - 1354-1013 .- 1365-2486. ; 28:20, s. 6065-6085
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Soil organic carbon (SOC) in coastal wetlands, also known as "blue C," is an essential component of the global C cycles. To gain a detailed insight into blue C storage and controlling factors, we studied 142 sites across ca. 5000 km of coastal wetlands, covering temperate, subtropical, and tropical climates in China. The wetlands represented six vegetation types (Phragmites australis, mixed of P. australis and Suaeda, single Suaeda, Spartina alterniflora, mangrove [Kandelia obovata and Avicennia marina], tidal flat) and three vegetation types invaded by S. alterniflora (P. australis, K. obovata, A. marina). Our results revealed large spatial heterogeneity in SOC density of the top 1-m ranging 40-200 Mg C ha(-1), with higher values in mid-latitude regions (25-30 degrees N) compared with those in both low- (20 degrees N) and high-latitude (38-40 degrees N) regions. Vegetation type influenced SOC density, with P. australis and S. alterniflora having the largest SOC density, followed by mangrove, mixed P. australis and Suaeda, single Suaeda and tidal flat. SOC density increased by 6.25 Mg ha(-1) following S. alterniflora invasion into P. australis community but decreased by 28.56 and 8.17 Mg ha(-1) following invasion into K. obovata and A. marina communities. Based on field measurements and published literature, we calculated a total inventory of 57 x 10(6) Mg C in the top 1-m soil across China's coastal wetlands. Edaphic variables controlled SOC content, with soil chemical properties explaining the largest variance in SOC content. Climate did not control SOC content but had a strong interactive effect with edaphic variables. Plant biomass and quality traits were a minor contributor in regulating SOC content, highlighting the importance of quantity and quality of OC inputs and the balance between production and degradation within the coastal wetlands. These findings provide new insights into blue C stabilization mechanisms and sequestration capacity in coastal wetlands.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Nyckelord
- blue carbon
- climate change
- coastal wetlands
- mangrove
- plant invasion
- salt marsh
- vegetation type
- Miljövetenskap
- Environmental Science
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Xia, Shaopan
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Song, Zhaoliang
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Van Zwieten, Luk ...
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Guo, Laodong
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Yu, Changxun, 19 ...
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Wang, Weiqi
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Li, Qiang
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Hartley, Iain P.
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Yang, Yuanhe
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Liu, Hongyan
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Wang, Yidong
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Ran, Xiangbin
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Liu, Cong-Qiang
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Wang, Hailong
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