globalchange  > 气候变化与战略
DOI: 10.5194/hess-22-5281-2018
论文题名:
The importance of small artificial water bodies as sources of methane emissions in Queensland; Australia
作者: Grinham A.; Albert S.; Deering N.; Dunbabin M.; Bastviken D.; Sherman B.; Lovelock C.E.; Evans C.D.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期:10
起始页码: 5281
结束页码: 5298
语种: 英语
Scopus关键词: Floods ; Gas emissions ; Irrigation ; Lakes ; Land use ; Methane ; Ponds ; Anthropogenic greenhouse gas emissions ; Artificial water ; Flux measurements ; Land use change and forestries ; Methane emissions ; Methane production ; Spatial extent ; Total surface area ; Greenhouse gases
英文摘要: Emissions from flooded land represent a direct source of anthropogenic greenhouse gas (GHG) emissions. Methane emissions from large, artificial water bodies have previously been considered, with numerous studies assessing emission rates and relatively simple procedures available to determine their surface area and generate upscaled emissions estimates. In contrast, the role of small artificial water bodies (ponds) is very poorly quantified, and estimation of emissions is constrained both by a lack of data on their spatial extent and a scarcity of direct flux measurements. In this study, we quantified the total surface area of water bodies < 105 m2 across Queensland, Australia, and emission rates from a variety of water body types and size classes. We found that the omission of small ponds from current official land use data has led to an underestimate of total flooded land area by 24 %, of small artificial water body surface area by 57 % and of the total number of artificial water bodies by 1 order of magnitude. All studied ponds were significant hotspots of methane production, dominated by ebullition (bubble) emissions. Two scaling approaches were developed with one based on pond primary use (stock watering, irrigation and urban lakes) and the other using size class. Both approaches indicated that ponds in Queensland alone emit over 1.6 Mt CO2eq. yr-1, equivalent to 10 % of the state's entire land use, land use change and forestry sector emissions. With limited data from other regions suggesting similarly large numbers of ponds, high emissions per unit area and under-reporting of spatial extent, we conclude that small artificial water bodies may be a globally important missing source of anthropogenic greenhouse gas emissions. © 2018 The Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163171
Appears in Collections:气候变化与战略

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作者单位: Grinham, A., School of Civil Engineering, University of Queensland, Brisbane, 4072, Australia; Albert, S., School of Civil Engineering, University of Queensland, Brisbane, 4072, Australia; Deering, N., School of Civil Engineering, University of Queensland, Brisbane, 4072, Australia; Dunbabin, M., Queensland University of Technology, Institute for Future Environments, Brisbane, QLD, Australia; Bastviken, D., Department of Thematic Studies-Water and Environmental Studies, Linköping University, Linköping, 58183, Sweden; Sherman, B., CSIRO Land and Water, Canberra, 2601, Australia; Lovelock, C.E., School of Biological Sciences, University of Queensland, Brisbane, 4072, Australia; Evans, C.D., Centre for Ecology and Hydrology, Environment Centre Wales, Bangor, LL57 2UW, United Kingdom

Recommended Citation:
Grinham A.,Albert S.,Deering N.,et al. The importance of small artificial water bodies as sources of methane emissions in Queensland; Australia[J]. Hydrology and Earth System Sciences,2018-01-01,22(10)
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