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	Impact of external nitrogen and phosphorus input between 2006 and 2010 on carbon cycle in China seas
	Gao Y.; He, N. P.; Yu, G. R.; Tian, J.; Miao, C. Y.; Yang, T. T.
	2015
关键词	Eutrophication Air-sea CO2 exchange Coastal Nitrogen Phosphorus Dissolved inorganic carbon Biogeochemistry dissolved inorganic carbon seagrass posidonia-oceanica southwestern china atmospheric co2 rainfall events marine ecosystems system eutrophication consequences
英文摘要	It is widely accepted that excess nutrients change the dissolved inorganic carbon (DIC) system, which drives air-sea carbon dioxide (CO2) exchanges, so the changes in the DIC system will then affect the oceans' carbon (C) biogeochemistry cycle. This study explores the impact of external nutrient input from 2006 to 2011 on the DIC system and air-sea CO2 exchanges in four largest coastal seas in China. The result demonstrates that external nutrient input significantly facilitates the biological uptake of DIC and promotes air-sea CO2 fluxes in coastal waters. The C sink caused by nitrogen (N) and phosphorus (P) input for the Bohai Sea, the Yellow Sea, the East China Sea, and the South China Sea account for 46, 45, 11, and 59 % of the total C sink, respectively. The excess nutrient input significantly changes the DIC system and C biogeochemistry cycle process in China Ocean. Up to a certain point, these effects are positive in increasing DIC levels and enhancing air-sea CO2 exchanges. However, the DIC levels may decrease if the nutrient increase is greater than the capacity of the oceanic C system. In addition, the other impact factors, including sea level, winds, water, and air temperatures, and various human activities, such as agriculture, industry, and domestic discharge, also affect N and P transport, air-sea CO2 fluxes, and C biogeochemistry cycles.
出处	Regional Environmental Change
卷	15
期	4
页	631-641
收录类别	SCI
语种	英语
ISSN号	1436-3798
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38622]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Gao Y.,He, N. P.,Yu, G. R.,et al. Impact of external nitrogen and phosphorus input between 2006 and 2010 on carbon cycle in China seas. 2015.

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