气候变化领域集成服务门户(CCPortal): The importance of small artificial water bodies as sources of methane emissions in Queensland; Australia

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DOI	10.5194/hess-22-5281-2018
	The importance of small artificial water bodies as sources of methane emissions in Queensland; Australia
	Grinham A.; Albert S.; Deering N.; Dunbabin M.; Bastviken D.; Sherman B.; Lovelock C.E.; Evans C.D.
发表日期	2018
ISSN	1027-5606
起始页码	5281
结束页码	5298
卷号	22 期号:10
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).
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
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159888
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
推荐引用方式 GB/T 7714	Grinham A.,Albert S.,Deering N.,et al. The importance of small artificial water bodies as sources of methane emissions in Queensland; Australia[J],2018,22(10).
APA	Grinham A..,Albert S..,Deering N..,Dunbabin M..,Bastviken D..,...&Evans C.D..(2018).The importance of small artificial water bodies as sources of methane emissions in Queensland; Australia.Hydrology and Earth System Sciences,22(10).
MLA	Grinham A.,et al."The importance of small artificial water bodies as sources of methane emissions in Queensland; Australia".Hydrology and Earth System Sciences 22.10(2018).