The net GHG emissions of the Three Gorges Reservoir in China: II. Post-impoundment GHG inventories and full-scale synthesis

doi:10.1016/j.jclepro.2020.123961

	The net GHG emissions of the Three Gorges Reservoir in China: II. Post-impoundment GHG inventories and full-scale synthesis
	Li, Zhe 2; Sun, Zhiyu 3; Chen, Yongbo 3; Li, Chong 3; Pan, Zhenhua 4; Harby, Atle 1; Lv, Pingyu 5; Chen, Dan 4; Guo, Jinsong 6
刊名	JOURNAL OF CLEANER PRODUCTION
	2020-12-20
卷号	277 页码:12
关键词	Greenhouse gas emissions Reservoir Carbon footprint Yangtze river Hydropower Mass budget
ISSN号	0959-6526
DOI	10.1016/j.jclepro.2020.123961
通讯作者	Li, Zhe(lizhe@cigit.ac.cn) ; Sun, Zhiyu(sun_zhiyu@ctg.com.cn)
英文摘要	Greenhouse gas (GHG) emissions are receiving worldwide attention and concern over the past decades. However, the net change of GHG emissions due to reservoir creation is not well reported. The objective of the study was to evaluate the net GHG emissions of the Three Gorges Reservoir (TGR), the largest reservoir in volume and installed capacity in China. Here, we provide the first full-scale synthesis of GHG emissions in the TGR. Data from two large sampling campaigns between 2010 and 2017 showed that the post-impoundment GHG emissions of the TGR were 1.36 +/- 0.16 x 10(6) tCO(2eq) yr(-1). A majority of GHGs (30%-70%) are emitted from air-water diffusive pathway in the main stem. Anthropogenic carbon and nutrients loads from the reservoir vicinity did not significantly contribute to the post-impoundment GHG emissions. Reservoir GHG emissions were mainly regulated by annual inflow. Subtracting preimpoundment GHG emissions from post-impoundment emissions, the net GHG emissions of the TGR in our sampling campaigns were 10.41 +/- 1.28 x 10(5) tCO(2eq) yr(-1). In terms of CO2 equivalents per unit of hydropower production in the same years, they were 11.8 +/- 1.8 gCO(2eq),kWh(-1). Mass budget analysis showed that flooding and decomposition of organic matter in flooded land could only explain 19.9% of reservoir net GHG emissions. A large proportion of the net GHG emissions needs further study to be quantitatively identified. In addition, our study elaborated the current limitations and further research needs in evaluation of carbon footprints of reservoir creation. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	Ministry of Science and Technology, China[2010CB955904] ; National Natural Science Foundation of China[51861125204] ; National Natural Science Foundation of China[51679226]
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000586917600149
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/12306]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Li, Zhe; Sun, Zhiyu
作者单位	1.SINTEF Energy Res, POB 4761 Torgarden, N-7465 Trondheim, Norway 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Environm, 266 Fangzheng Ave,Shuitu Hitech Ind Pk, Chongqing 400714, Peoples R China 3.China Three Gorges Corp, 1 South Yuyuantan Rd, Beijing 100038, Peoples R China 4.Danish Hydraul Inst DHI, Fourth Floor,Bldg A,181 Guyi Rd, Shanghai 200235, Peoples R China 5.Water Environm Monitoring Ctr Upper Reach Yangtze, 410 Haier Rd, Chongqing 400021, Peoples R China 6.Chongqing Univ, Sch Environm & Ecol, 83 Shabeijie St,Campus B, Chongqing 400044, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhe,Sun, Zhiyu,Chen, Yongbo,et al. The net GHG emissions of the Three Gorges Reservoir in China: II. Post-impoundment GHG inventories and full-scale synthesis[J]. JOURNAL OF CLEANER PRODUCTION,2020,277:12.
APA	Li, Zhe.,Sun, Zhiyu.,Chen, Yongbo.,Li, Chong.,Pan, Zhenhua.,...&Guo, Jinsong.(2020).The net GHG emissions of the Three Gorges Reservoir in China: II. Post-impoundment GHG inventories and full-scale synthesis.JOURNAL OF CLEANER PRODUCTION,277,12.
MLA	Li, Zhe,et al."The net GHG emissions of the Three Gorges Reservoir in China: II. Post-impoundment GHG inventories and full-scale synthesis".JOURNAL OF CLEANER PRODUCTION 277(2020):12.