Air-water CO2 and CH4 fluxes along a river-reservoir continuum: Case study in the Pengxi River, a tributary of the Yangtze River in the Three Gorges Reservoir, China

doi:10.1007/s10661-017-5926-2

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水质生物转化研究中心

	Air-water CO2 and CH4 fluxes along a river-reservoir continuum: Case study in the Pengxi River, a tributary of the Yangtze River in the Three Gorges Reservoir, China
	Huang, Yang 1,3; Yasarer, Lindsey M. W.2; Li, Zhe1 ; Sturm, Belinda S. M.2; Zhang, Zengyu 1; Guo, Jinsong 1; Shen, Yu 1
刊名	ENVIRONMENTAL MONITORING AND ASSESSMENT
	2017-05-01
卷号	189 期号:5 页码:15
关键词	Greenhouse gas emissions Reservoir operation ThreeGorges Reservoir Phytoplankton Nutrients
ISSN号	0167-6369
DOI	10.1007/s10661-017-5926-2
通讯作者	Li, Z (reprint author), Chinese Acad Sci, CAS Key Lab Reservoir Environm, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.
英文摘要	Water surface greenhouse gas (GHG) emissions in freshwater reservoirs are closely related to limnological processes in the water column. Affected by both reservoir operation and seasonal changes, variations in the hydro-morphological conditions in the river-reservoir continuum will create distinctive patterns in water surface GHG emissions. A one-year field survey was carried out in the Pengxi River-reservoir continuum, a part of the Three Gorges Reservoir (TGR) immediately after the TGR reached its maximum water level. The annual average water surface CO2 and CH4 emissions at the riverine background sampling sites were 6.23 +/- 0.93 and 0.025 +/- 0.006 mmol h(-1) m(-2), respectively. The CO2 emissions were higher than those in the downstream reservoirs. The development of phytoplankton controlled the downstream decrease in water surface CO2 emissions. The presence of thermal stratification in the permanent backwater area supported extensive phytoplankton blooms, resulting in a carbon sink during several months of the year. The CH4 emissions were mainly impacted by water temperature and dissolved organic carbon. The greatest water surface CH4 emission was detected in the fluctuating backwater area, likely due to a shallower water column and abundant organic matter. The Pengxi River backwater area did not show significant increase in water surface GHG emissions reported in tropical reservoirs. In evaluating the net GHG emissions by the impoundment of TGR, the net change in the carbon budget and the contribution of nitrogen and phosphorus should be taken into consideration in this eutrophic river-reservoir continuum.
资助项目	National Natural Science Foundation[51679226] ; National Natural Science Foundation[41601537] ; National Science and Technology Major Project on Water Pollution Control and Management[2014ZX07104-006] ; National Science and Technology Major Project on Water Pollution Control and Management[2015ZX07103-007] ; China Three Gorges Corporation ; NSF EAPSI[IIA-1414818]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000401010900020
内容类型	期刊论文
源URL	[http://172.16.51.4:88/handle/2HOD01W0/233]
专题	水质生物转化研究中心
通讯作者	Li, Zhe
作者单位	1.Chinese Acad Sci, CAS Key Lab Reservoir Environm, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Univ Kansas, Dept Civil Environm & Architectural Engn, Lawrence, KS 66045 USA 3.Chengdu Univ Informat Technol, Coll Resources & Environm, Chengdu 610225, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yang,Yasarer, Lindsey M. W.,Li, Zhe,et al. Air-water CO2 and CH4 fluxes along a river-reservoir continuum: Case study in the Pengxi River, a tributary of the Yangtze River in the Three Gorges Reservoir, China[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2017,189(5):15.
APA	Huang, Yang.,Yasarer, Lindsey M. W..,Li, Zhe.,Sturm, Belinda S. M..,Zhang, Zengyu.,...&Shen, Yu.(2017).Air-water CO2 and CH4 fluxes along a river-reservoir continuum: Case study in the Pengxi River, a tributary of the Yangtze River in the Three Gorges Reservoir, China.ENVIRONMENTAL MONITORING AND ASSESSMENT,189(5),15.
MLA	Huang, Yang,et al."Air-water CO2 and CH4 fluxes along a river-reservoir continuum: Case study in the Pengxi River, a tributary of the Yangtze River in the Three Gorges Reservoir, China".ENVIRONMENTAL MONITORING AND ASSESSMENT 189.5(2017):15.