Carbon footprints of pre-impoundment clearance on reservoir flooded area in China's large hydro-projects: Implications for GHG emissions reduction in the hydropower industry

被引：28
|
作者：
Li, Zhe [1 ,2 ]
Lu, Lunhui [1 ]
Lv, Pingyu [3 ]
Du, Hailong [1 ]
Guo, Jinsong [2 ]
He, Xiao [1 ]
Ma, Jianrong [1 ]
机构：
[1] 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
[2] Chongqing Univ, Coll Urban Construct & Environm Engn, 174 Shazheng St, Chongqing 400045, Peoples R China
[3] Changjiang Water Resources Commiss, Water Environm Monitoring Ctr Upper Reach Yangtze, 410 Haier Rd, Chongqing 400021, Peoples R China
来源：
JOURNAL OF CLEANER PRODUCTION | 2017年 / 168卷
基金：
中国国家自然科学基金;
关键词：
Greenhouse gases; Hydropower; Reservoir flooded area; Removal of forests and trees; Emissions reduction; Carbon footprint; GREENHOUSE-GAS EMISSIONS; BRAZIL TUCURUI DAM; HYDROELECTRIC RESERVOIRS; METHANE EMISSIONS; TROPHIC UPSURGE; DIOXIDE; DEFORESTATION; QUEBEC; FLUXES; CO2;
D O I：
10.1016/j.jclepro.2017.09.091
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Pre-impoundment clearance in an area to be flooded by a reservoir is a commonly applied engineering measure to remove vegetation cover, buildings, structures and solid waste landfill as a clean production approach in the hydropower industry. By removing forests and trees, pre-impoundment clearance is also among one of the most applicable and practical measures to significantly minimize the potential increase in greenhouse gas (GHG) emissions after reservoir impoundment. By using Economic Input-Output Life Cycle Assessment (EIO-LCA) method and following ISO 14067, the present study evaluated carbon footprints of pre-impoundment clearance in China's five largest hydro-projects: the Three Gorges Dam Project (TGD), the Xiangjiaba Project, the Xiluodu Project, the Baihetan Project, and the Wudongde Project, and discussed the trade-offs between these carbon footprints and the contributions to GHG emission reductions from pre-impoundment clearance. The carbon footprints of pre-impoundment clearance in these hydro-projects ranged from 0.020 gCO(2eq).kWh(-1) to 0.434 gCO(2eq).kWh(-1); the TGD project had the maximum carbon footprint among the hydro-projects. Removal of buildings, structures, and solid wastes created the largest share (over 95%) of carbon footprints of pre-impoundment clearance. Removal of forests and trees in pre-impoundment clearance could possibly reduce potential GHG emissions after reservoir impoundment, which equal to approximately 14.43%-246.80% of pre-impoundment clearance. Higher anthropogenic activity in terms of population density in reservoir areas to be flooded and smaller hydro-project energy density resulted in higher carbon footprints from pre-impoundment clearance. In China's cases, pre-impoundment clearance is concluded to be a significant measure of GHG emission reduction in hydropower industry. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：1413 / 1424
页数：12
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