干旱区生态环境知识资源中心(Arid): Spatiotemporal variability and diffusive emissions of greenhouse gas in a shallow eutrophic lake in Inner Mongolia, China

Arid

DOI	10.1016/j.ecolind.2022.109578
	Spatiotemporal variability and diffusive emissions of greenhouse gas in a shallow eutrophic lake in Inner Mongolia, China
	Li, Guohua; Zhang, Sheng; Shi, Xiaohong; Zhan, Liyang; Zhao, Shengnan; Sun, Biao; Liu, Yu; Tian, Zhiqiang; Li, Zhijun; Arvola, Lauri; Uusheimo, Sari; Tulonen, Tiina; Huotari, Jussi
通讯作者	Zhang, S
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	145
英文摘要	Aquatic ecosystems are globally significant sources of greenhouse gases (GHG) to the atmosphere, offsetting the terrestrial sinks. A one-year field study was carried out in a shallow eutrophic Lake Wuliangsuhai, Inner Mongolia (draining waters from one of the largest irrigation areas in China), to estimate diffusive GHG fluxes and their relative importance in global warming potential (GWP). Our results showed high spatiotemporal variation in dissolved CO2, CH4 and N2O concentrations, while they did not differ significantly between the bottom and surface layers of the shallow waterbody. In general, GHG concentrations and diffusive fluxes were higher in the north part of the lake than in the south. GHG concentrations in the water under the ice were significantly higher than those during the open-water period. Spatial variability of GHG concentrations varied with the bathymetry of the lake. The location of study sites relative to the main inflow and abundance of submerged macrophytes were the main controlling factors of GHG concentrations, as indicated by the consistency of GHG concentrations at the sampling sites, particularly for N2O. The total diffusive GHG emission from Lake Wuliangsuhai was 76.9 +/- 5.4 Gg CO2 equivalents yr(-1), with CO2, CH4 and N2O contributing 16 %, 83 %, and 1 %, respectively. Overall, the results suggest that shallow lakes in mid-latitude arid areas with cold winters can be potentially important GHG sources. However, those lakes are insufficiently represented in the scientific literature, and therefore they deserve more research attention.
英文关键词	Lake Wuliangsuhai CO2, CH4, N2O concentrations GHG fluxes Eutrophic lake Arid area
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000880809000001
WOS关键词	CARBON-DIOXIDE ; METHANE EBULLITION ; NITROUS-OXIDE ; BOREAL LAKES ; WATER CO2 ; DYNAMICS ; MODEL ; FLUX ; N2O
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392355
推荐引用方式 GB/T 7714	Li, Guohua,Zhang, Sheng,Shi, Xiaohong,et al. Spatiotemporal variability and diffusive emissions of greenhouse gas in a shallow eutrophic lake in Inner Mongolia, China[J],2022,145.
APA	Li, Guohua.,Zhang, Sheng.,Shi, Xiaohong.,Zhan, Liyang.,Zhao, Shengnan.,...&Huotari, Jussi.(2022).Spatiotemporal variability and diffusive emissions of greenhouse gas in a shallow eutrophic lake in Inner Mongolia, China.ECOLOGICAL INDICATORS,145.
MLA	Li, Guohua,et al."Spatiotemporal variability and diffusive emissions of greenhouse gas in a shallow eutrophic lake in Inner Mongolia, China".ECOLOGICAL INDICATORS 145(2022).