Researches on the Variations of Greenhouse Gas Exchange Flux at Water Surface Nearby the Small Hydropower Station of Qingshui River, Guizhou

Greenhouse gas (GHG) emission from water surface nearby the small hydropower station is a rising problem of concern. This paper studied the daytime changes of GHG flux of Fujiang hydropower station (FJHPS) and Xiasi hydropower station (XSHPS) located on Qingshui river in Guizhou by the static float chamber sampling and the gas chromatography analysis method in Autumn. Data showed, the fluxes of CO2, CH4 and N2O ranged from −43 to 72, −23 to 15 and −0.016 to 0.13 mmol·(m2·d)−1, respectively. Overall, the GHG fluxes in the downstream of the station were slightly higher than the upstream, which manifested the downstream released more GHGs. The CO2 exchange fluxes in FJHPS were higher than XSHPS, while CH4 and N2O fluxes showed a reverse situation. The fluxes of GHG had a positive correlation with DO and pH. Compared with other lakes and reservoirs, smaller releasing rates of GHG were existed in the small hydropower station.

[1]  W. Krumbein.  Photolithotropic and chemoorganotrophic activity of bacteria and algae as related to beachrock formation and degradation (gulf of Aqaba, Sinai) , 1979 .

[2]  Tim R. Moore,et al.  Turning attention to reservoir surfaces, a neglected area in greenhouse studies , 1994 .

[3]  Sandrine Richard,et al.  Gaseous emissions and oxygen consumption in hydroelectric dams: A case study in French Guyana , 1997 .

[4]  David G. Victor,et al.  Strategies for cutting carbon , 1998, Nature.

[5]  Prabir K. Patra,et al.  Seasonal and spatial variability in N2O distribution in the Arabian Sea , 1999 .

[6]  Marc Lucotte,et al.  Comparison of greenhouse gas emissions from an old tropical reservoir with those from other reservoirs worldwide , 2000 .

[7]  Atul K. Jain,et al.  Radiative forcings and global warming potentials of 39 greenhouse gases , 2000 .

[8]  K. Kulshreshtha,et al.  Seasonal dynamics of methane emission from wetlands , 2000 .

[9]  D. M. Rosenberg,et al.  Reservoir Surfaces as Sources of Greenhouse Gases to the Atmosphere: A Global Estimate , 2000 .

[10]  Alfred Wüest,et al.  Disrupting biogeochemical cycles - Consequences of damming , 2002, Aquatic Sciences.

[11]  Jukka Alm,et al.  Fluxes of methane, carbon dioxide and nitrous oxide in boreal lakes and potential anthropogenic effects on the aquatic greenhouse gas emissions. , 2003, Chemosphere.

[12]  Ping Xie,et al.  Methane and carbon dioxide fluxes from a shallow hypereutrophic subtropical Lake in China , 2005 .

[13]  Louis Varfalvy,et al.  Carbon dioxide and methane emissions and the carbon budget of a 10‐year old tropical reservoir (Petit Saut, French Guiana) , 2005 .

[14]  J. Frechette,et al.  Analytical Techniques for Measuring Fluxes of CO2 and CH4 from Hydroelectric Reservoirs and Natural Water Bodies , 2005 .

[15]  Tero Väisänen,et al.  Methane fluxes at the sediment-water interface in some boreal lakes and reservoirs , 2006 .

[16]  F. Roland,et al.  Variability of carbon dioxide flux from tropical (Cerrado) hydroelectric reservoirs , 2010, Aquatic Sciences.

[17]  John M. Melack,et al.  CO2 emissions from a tropical hydroelectric reservoir (Balbina, Brazil) , 2011 .

[18]  Jin-hong Guan,et al.  Carbon dioxide emission from surface water in cascade reservoirs-river system on the Maotiao River, southwest of China , 2011 .

[19]  M. V. van Loosdrecht,et al.  Methane emission during municipal wastewater treatment. , 2012, Water research.

[20]  George R. Aiken,et al.  Export of dissolved organic carbon from the Penobscot River basin in north-central Maine , 2013 .