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Spatiotemporal variations of partial pressure of carbon dioxide in surface sea water in the Qiongzhou Strait in summer
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Yu Ma1, 2, Shizhi Liao1, 2, Ruixiang Li1, 2, Yucan Cai1, 2, Yonggang Cao1, 2, Chunling Xu1, 2, Huaming Shi1, 2, Di Wang1, 2, Xin Xu1, 2
Haiyang Xuebao | 2020, 42(12) : 110 - 118
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Haiyang Xuebao | 2020, 42(12): 110-118
• Research Note •
Spatiotemporal variations of partial pressure of carbon dioxide in surface sea water in the Qiongzhou Strait in summer
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Yu Ma1, 2, Shizhi Liao1, 2, Ruixiang Li1, 2, Yucan Cai1, 2, Yonggang Cao1, 2, Chunling Xu1, 2, Huaming Shi1, 2, Di Wang1, 2, Xin Xu1, 2
Affiliations
  • 1 South China Sea Marine Survey and Technology Center, State Oceanic Administration, Guangzhou 510300, China
  • 2 Key Laboratory of Marine Environmental Survey Technology and Application, Ministry of Natural Resources, Guangzhou 510300, China
Published: 2020-12-25 doi: 10.3969/j.issn.0253-4193.2020.12.012
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The sea surface temperature(SST), salinity(SSS), dissolved oxygen (DO), chlorophyll a(Chl a) and surface partial pressure of carbon dioxide(pCO2) was determined by underway measurement system in the Qiongzhou Strait in summer 2011 and 2014, and the spatiotemporal variations of pCO2 were analyzed and its control factors were explained. The averages of pCO2 in surface sea water were (516±29) μatm and (533±15) μatm, sea-air CO2 fluxes were (8.4±1.7) mmol/(m2·d) and (4.5±0.4) mmol/(m2·d) in summer 2011 and 2014, the Qiongzhou Strait acted as strong atmospheric CO2 source and was more higher than the adjacent and similar sea areas. The upwelling forced the CO2-enriched subsurface water to intrude the surface water and elevated pCO2 in the east mouth, also promoted biological productivity and absorbed CO2 from sea water, and also made the pCO2 drop and DO rise sharply in the vicinity of west mouth in summer 2011. The upwelling was weak in east mouth and vertical mixing was strong along ship-track in summer 2014, the distributions of pCO2 and DO were obviously different from that in summer 2011. Narrow channel effect was significant in the middle of Qiongzhou Strait, high water transportation speed with strong mixing resulted in weak photosynthetic activity, they altogether maintained high pCO2 in summer 2011 and 2014.

the Qiongzhou Strait  /  partial pressure of carbon dioxide  /  upwelling  /  narrow channel effect
Yu Ma, Shizhi Liao, Ruixiang Li, Yucan Cai, Yonggang Cao, Chunling Xu, Huaming Shi, Di Wang, Xin Xu. Spatiotemporal variations of partial pressure of carbon dioxide in surface sea water in the Qiongzhou Strait in summer[J]. Haiyang Xuebao, 2020 , 42 (12) : 110 -118 . DOI: 10.3969/j.issn.0253-4193.2020.12.012
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Year 2020 volume 42 Issue 12
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Article Info
doi: 10.3969/j.issn.0253-4193.2020.12.012
  • Receive Date：2020-03-17
  • Online Date：2026-03-27
  • Published：2020-12-25
Article Data
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History
  • Received：2020-03-17
  • Revised：2020-07-24
Funding
Affiliations
    1 South China Sea Marine Survey and Technology Center, State Oceanic Administration, Guangzhou 510300, China
    2 Key Laboratory of Marine Environmental Survey Technology and Application, Ministry of Natural Resources, Guangzhou 510300, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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