| DOI: | 10.2172/1050345
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| 报告号: | ORNL/TM-2012/136
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| 报告题名: | Greenhouse Gas Emissions from U.S. Hydropower Reservoirs: FY2011 Annual Progress Report |
| 作者: | Stewart, Arthur J [ORNL]; Mosher, Jennifer J [ORNL]; Mulholland, Patrick J [ORNL]; Fortner, Allison M [ORNL]; Phillips, Jana Randolph [ORNL]; Bevelhimer, Mark S [ORNL]
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| 出版年: | 2012
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| 发表日期: | 2012-05-01
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Greenhouse Gases
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| 中文主题词: | 碳
; 有机物
; 排放物
; 植被
; 有机碳
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| 主题词: | CARBON
; ORGANIC MATTER
; EMISSIONS
; VEGETATION
; ORGANIC CARBON
|
| 英文摘要: | The primary objective of this study is to quantify the net emissions of key greenhouse gases (GHG) - notably, CO{sub 2} and CH{sub 4} - from hydropower reservoirs in moist temperate areas within the U.S. The rationale for this objective is straightforward: if net emissions of GHG can be determined, it would be possible to directly compare hydropower to other power-producing methods on a carbon-emissions basis. Studies of GHG emissions from hydropower reservoirs elsewhere suggest that net emissions can be moderately high in tropical areas. In such areas, warm temperatures and relatively high supply rates of labile organic matter can encourage high rates of decomposition, which (depending upon local conditions) can result in elevated releases of CO{sub 2} and CH{sub 4}. CO{sub 2} and CH{sub 4} emissions also tend to be higher for younger reservoirs than for older reservoirs, because vegetation and labile soil organic matter that is inundated when a reservoir is created can continue to decompose for several years (Galy-Lacaux et al. 1997, Barros et al. 2011). Water bodies located in climatically cooler areas, such as in boreal forests, could be expected to have lower net emissions of CO{sub 2} and CH{sub 4} because their organic carbon supplies tend to be relatively recalcitrant to microbial action and because cooler water temperatures are less conducive to decomposition. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1050345
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40670
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1050345.pdf（1180KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Stewart, Arthur J [ORNL],Mosher, Jennifer J [ORNL],Mulholland, Patrick J [ORNL],et al. Greenhouse Gas Emissions from U.S. Hydropower Reservoirs: FY2011 Annual Progress Report. 2012-01-01.
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