Salt freshwater mixing characteristics and the variations of the partial pressure of carbon dioxide along the Modao Gate waterway in the Xijiang River in China in drought season

JIAO Shu-lin; GAO Quan-zhou; LIU Kun

Article Contents

Article Navigation > Haiyang Xuebao > 2009 > 31(6): 40-47

JIAO Shu-lin, GAO Quan-zhou, LIU Kun. Salt freshwater mixing characteristics and the variations of the partial pressure of carbon dioxide along the Modao Gate waterway in the Xijiang River in China in drought season[J]. Haiyang Xuebao, 2009, 31(6): 40-47.

Citation:

PDF( 603 KB)

Salt freshwater mixing characteristics and the variations of the partial pressure of carbon dioxide along the Modao Gate waterway in the Xijiang River in China in drought season

1.
, School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China;School of Geography and Developmentology, Guizhou Normal University, Guiyang 510275, China
2.
, School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China

Received Date: 2007-12-21
Rev Recd Date: 2008-02-01

Abstract

Abstract

To study the relationship between the salt freshwater mixing characteristics and the variations of the partial pressure of carbon dioxide, some physicochemical parameters were measured for the 36 field water samples collected from different positions along the Modao Gate waterway of the Xijiang River inner estuary in the Zhujiang River Delta zone in the drought season in 2006.The spatial variation characteristic of the partial pressure of carbon dioxide in the surface water was analyzed by means of correlation analysis and curve fit. The analytical results show that the variation of the partial pressure of carbon dioxide, with a range of 147 to 364 Pa, and an average 201 Pa, has a decreasing tendency with a striking variational labilization ranged between 24 and 38 km channel which corresponds to the salinity of 3-6 along the Modao Gate waterway. The biogeochemistry behaviors of the riverine carbon were controlled by the spatio-temporal variation of physicochemical parameters which were influenced by the estuarine tide-mixing action.
- survey distance,
- salinity,
- oxidation reduction potential,
- partial pressure of carbon dioxide,
- estuarine process

FullText(HTML)

References(24)

References

IGBP,IHDP,WCRP.The carbon challenge:an IGBP-IHDP-WCRP Joint Project[Z].//Stockholm:International Geosphere and Biosphere Programme,2001,3-12.

BALINO B M,FASH AM M J R,BOWES M C.Ocean biogeochemistry and global change:JGOFS research highlights 1988-2000[J].IGBP Science,2001,2:8-13.

JONES J J B.MULHOLLAND P J.Influence of drainage basin topography and elevation on carbon dioxide and methane supersaturation of stream water[J].Biogeochemistry,1998,40:57-72.

RICHEY J E,MELACK J M,AUFDENKAMPE A K,et al.Outgassing from Amazonian rivers and wetlands as a large tropical source of atmospheric CO₂[J].Nature,2002,416:617-620.

WORRALL F,SWANK W T,BURT T.Fluxes of inorganic carbon from two forested catchments in the Appalachian Mountains[J].Hydrol Process,2005,19,3021-3035.

苏征,张龙军,王晓亮.黄河河流水体二氧化碳分压及其影响因素分析[J].海洋科学,2005,29(4):41-44.

RAYMOND P A,CARACO N F,COLE J J.Carbon dioxide concentration and atmospheric flux in the Hudson River[J].Estuaries,1997,20(2):381-390.

FRANKIGNOULLE M,ABROL G,BORGES A,et al.Carbon dioxide emission from European estuaries[J].Science,1998,282:434-436.

GUERIN F,ABRIL G,SERCA D.et al.Gas transfer velocities of CO₂ and CH₄ in a tropical reservoir and its river downstream[J].Journal of Marine Systems,2007,66(1-4):161-172.

CAI Wei-jun,WANG Yong-chen.The chemistry,fluxes and sources of carbon dioxide in the estuarine waters of the Satilla and Altamaha Rivers,Georgia[J].Limnol Oceanogr,1998,43:657-668.

RAYMOND P A,BAUER J E,COLE J J.Atmospheric CO₂ evasion,dissolved inorganic carbon production,and net heterotrophy in the York River estuary[J].Limnol Oceanogr,2000,45:1707-1717.

SARMA V V S S,KUMAR M D,MANERIKAR M.Emission of carbon dioxide from a tropical estuarine system,Goa,India[J].Geophys Res Lett,2001,28:1239-1242.

ZHA1 Wei-dong,DAI Ming-han,CAI Wei-jun.et al.High partial pressure of CO₂ and its maintaining mechanism in a subtropical estuary:the Pearl River estuary,China[J].Marine Chemistry,2005,93:21-32.

李岩,张龙军,苏征,等.长江口淡水端淡-盐水混合表层PCO₂的急剧变化及其影响机制[J].中国海洋大学学报,2006,36(2):295-298.

高全洲,沈承德,孙彦敏,等.珠江马口站、河口站断面水体有机碳含量的季节变化[J].地球化学,1999,28(3):273-280.

高全洲,沈承德,孙彦敏,等.西江流域有机碳侵蚀通量[J].沉积学报,2000,18(4):639-644.

高全洲,沈承德,孙彦敏,等.北江流域有机碳侵蚀通量初步研究[J].环境科学,2001,22(2):12-18.

陶贞,高全洲,姚冠荣,等.增江流域河流颗粒有机碳的来源、含量变化及输出通量[J].环境科学学报,2004,24(5):789-795.

YAO Guang-rong,GAO Quan-zhou,WANG Zhen-gang,et al.Dynamics of CO₂ partial pressure and CO₂ Outgassing in the lower reaches of the Xijiang River,a subtropical monsoon river in China[J].Science of the Total Environment,2007,376(1-3):255-266.

罗宪林,杨清书,贾良文,等.珠江三角洲河网河床演变[M].广州:中山大学出版社,2002:9-37.

韩舞鹰,马克美,吴林兴,等.海水化学要素调查手册[K].北京:海洋出版社,1986:48-50.

TELMER K.VEIZER J.Carbon fluxes,PCO₂,and substrate weathering in a large northern river basin,Canada-carbon isotope perspectives[J].Chemical Geology,1999,159:61-86.

MEYBECK M.Riverine transport of atmospheric carbon,sources,global typology and budget[J].Water,Air &.Soil Pollution,1993,70:443-463.

DAI Ming-han,GUO Xian-ghui,ZHAI Wei-dong,et al.Oxygen depletion in the upper reach of the Pearl River estuary during a winter drought[J].Marine Chemistry,2006,102:159-169.

Relative Articles

Supplements(0)

Cited By

Proportional views